The AAPG GIS Volume entitled: Graphic Information Systems in Petroleum
Exploration and Production is now underway. We are presently looking
for a few good reviewers to help us with the articles which are due in
January. The volume will consist of about 15 articles contributed by
authors from Exxon, Univ. of Salzburg, Geodynamic Solutions, BDM
Technologies, Amoco, Dynamic Graphics, PI Dwights, British Petroleum,
Geotech Computer Systems, ESRI, Berry & Associates, and Spatial
Information Systems. A keynote paper by Keith Turner will set the stage
for the volume, and T.C. Coburn and myself will provide an introduction.
Those interested must be able to complete the reviews in one month's
time . The manuscripts are expected to be available beginning in
January. Reviewers will be graciously acknowledged in the volume.
Please respond to my email address or to Tim Coburn at
tcoburn@....
J. Yarus, Chairman, AAPG Publications
________________________________________________________
Jeffrey M. Yarus, Ph.D.
Manager of Reservoir Characterization
GEOMATH, Inc.
200 Westlake Park Blvd.
Houston, Texas 77079
Tel: 281.293.8550 (ext. 15) Fax: 281. 293.8294 WEB:
www.geomath.com
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I'm trying to get a copy (or email address for either author (below)) of a
reprint of an article that was just published. The article is:
Z Zhang, DA Griffith. 1997. Developing user-friendly spatial statistical
analysis modules for GIS: an example using ArcView. Computers, Environment
and Urban Systems, vol 21/1:5-29, 1997.
Other articles or websites that document spatial statistics commands using
ArcView(with the Spatial Analyst extension) also appreciated. Thanks.
Vic Rudis
USDA-FS-SRS-FIA
P.O. Box 928
Starkville, MS 39760-0928
USA
/s/ Vic Rudis............vrudis@...
+\USDA-FS-FIA Unit: http://www.srsfia.usfs.msstate.edu
|\\Ecological: http://www.msstate.edu/Dept/Forestry/ecofia.html
|+\\\,,,/|\Personal: http://www2.msstate.edu/~vrudis/index.html
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INTERNATIONAL CONFERENCE ON GIS FOR
EARTH SCIENCE APPLICATIONS
LJUBLJANA, SLOVENIA
17 - 21 MAY 1998
ORGANIZED BY
Geological Survey - Institute for Geology, Geotechnics and Geophysics (IGGG)
ORGANISING COMMITTEE
President: Dr. Mihael Ribicic, IGGG, Slovenia
Vice-presidents: Prof. Andrea Fabbri, ITC, The Netherlands
Prof. Simon Pirc, University of Ljubljana, Slovenia
Secretary: Mr. Franc Zepic
Treasurer: Ms. Irena Trebusak
Members: Mr. Trajan Dimkovski
Ms. Jasna Sinigoj
Mr. Janez Hafner
Mr. Anton Jagodic
KEYNOTE SPEAKERS
The following keynote speakers have promised to give contribution:
Prof. Andrea Fabbri, ITC, The Netherlands
Dr. Henk Schalke, TNO-RGD, The Netherlands
Dr. Ian Jackson, BGS, United Kingdom
Dr. Mihael Ribicic, IGGG, Slovenia
Discussions with some other potential speakers are in progress.
TIMETABLE
Deadline for Abstracts 15 January 1998
Authors notified 30 January 1998
Deadline for receipt of Papers 10 March 1998
OFFICIAL LANGUAGE
The official language of the Conference will be English.
PURPOSE
The IGGG organises The Conference on GIS for Earth Science Applications to
be held in Ljubljana from 17th to 21st May 1998.
The Conference is especially directed towards the earth scientists from
geological surveys and institutions that use or are implementing
information technologies to best serve their institutions, government,
local authorities, utility sector and companies, as well as general public.
Main themes of the conference are meant for all those experts who are
directly or indirectly concerned with shallow and deep subsurface data.
The conference is therefore an opportunity to share knowledge, experiences
and ideas which help us have an active role in our societies which demand
every day more and more raw materials, water and energy and at the same
time cause severe environmental damage. To find the right balance between
the nature and human exploration earth scientists are having an important
role to play.
CONFERENCE MAIN TOPICS
The conference will address the following topics :
A) Application of GIS in Earth Sciences
B) Application of GIS in Geology
C) Application of GIS in Environmental Protection and Waste Disposal
Management
D) Modern Cartography
E) Data Management, Data Base Design and Data Standards Used by Geologists
F) Modelling and Use of Statistical, Geostatistical and Artificial
Intelligence Techniques in GIS for Earth Scientists
G) Remote Sensing, GIS and Geology
THE TENTATIVE PROGRAMME
Sunday, 17 May 1998
15.00 - 19.00 Registration of participants
19.00 - 21.00 Conference buffet for all participants
Monday, 18 May 1998
9.00 - 10.30 Official opening and plenary lectures
10.30 - 10.50 Coffee break
10.50 - 12.30 Theme A
12.30 - 14.00 Lunch
14.00 - 15.20 Theme A / B
15.20 - 15.40 Coffee/tea break
15.40 - 17.00 Theme B
17.00 - 18.00 Poster session
Tuesday, 19 May 1998
9.00 - 10.40 Theme C
10.40 - 10.50 Coffee/tea break
10.50 - 12.30 Theme C / D
12.30 - 14.00 Lunch
14.00 - 15.20 Theme D
15.20 - 15.40 Coffee/tea break
15.40 - 17.00 Theme E
19.00 - 21.00 Conference dinner
Wednesday, 20 May 1998
9.00 - 10.40 Theme E
10.40 - 10.50 Coffee / tea break
10.50 - 12.30 Theme F
12.30 - 14.00 Lunch
14.00 - 15.20 Theme G
15.20 - 15.40 Coffee/tea break
15.40 - 17.00 Poster session
17.00 - 18.00 Round table
18.0 - 18.30 Official closing of the Conference
Oral presentation will take 20 minutes each, including 5 minutes for
discussion.
Thursday, 21 May 1998
Excursion A: Tour to Slovenian karst (Postojna cave, Skocjan caves, visit
to wine-cellar )
Excursion B: Tour to Slovenian Alps (Bled, Bohinj)
The number of participants to each excursion is restricted to 40 persons,
and those who will respond first will be given the priority. Excursion fee
50 USD, including the meals. The fees can be paid at the conference.
CALL FOR PAPERS
Abstracts:
Authors with papers on technical subjects relevant to the Conference topics
and within the Conference theme are invited to send abstracts - in English
- of no less than 300 words and no more than 400 words to the Conference
Secretariat by 15th January 1998.
Papers:
Selection of the proposed papers to be presented orally or as posters will
be made by the Scientific Committee. Authors will be informed of acceptance
of their paper by 30th January 1998.
Each paper should contain the following parts:
Title: In capital letters, bold
Authors: Lower case, bold
Address: Lower case, italic
Text: Lower case, Times New Roman, 12 pt font
References: Lower case, Times New Roman, 12 pt
Spacing: Single, one line blank between title and name/address and text
Margins: 3 cm all (top, bottom, left and right)
Headers/footers: not allowed
The final, printed text length of a paper should not exceed 6 pages. In
addition the paper may contain up to two pages of figures.
Papers should be submitted as a printed copy and, when possible, on a
floppy disk. Document formats to be used are: Word for Windows, WordPerfect
or plain text. Drawings: .tiff or .gif files. E-mail can be also used if
paper is written in above mentioned format and sent as an attachment.
All completed and refereed papers received by the end of 10th March 1998
will be included in conference proceedings.
REGISTRATION FEE (in US Dollars)
Delegate (*before 31st January '98 / **after 31st January '98) 210*/ 260**
Student 70* / 90**
Accompanying Person 100
A full-time Conference delegates are entitled to: attendance to all
sessions, morning, afternoon coffee / tea and daily lunches, official
Conference dinner, welcome reception on Sunday, official published
Conference proceedings, forwarded during the Conference.
PAYMENT OF CONFERENCE FEES
Payment in American Dollars (US$) or any other currency equivalent to
requested USD amount must be paid before end April. International those
who respond after the deadline to this second announcement (31 December
1997).
One USD was 170 SIT (Slovenian Tolars) on the 1st September 1997.
INFORMATION AND CORRESPONDENCE
For additional information please contact:
Mr. Franc ZEPIC
Secretariat of ICGESA Conference
Institute for Geology, Geotechnics and Geophysics (IGGG)
Dimiceva 14, 1000 LJUBLJANA, SLOVENIA
Telephone: (int) 386-61 1682 461
Fax: (int) 386-61 1682 557
E-mail: fzepic@ i-ggg.si
REGISTRATION FORM:
Please, e-mail it or copy it and fax !
International Conference on GIS for Earth Science Applications
Ljubljana, Slovenia 17 - 21 May 1998
REGISTRATION FORM
Ms./Mr./Dr./Prof.
First Name:
Family Name:
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Address
City:
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Abstract enclosed mailed faxed e-mailed
Signature:
Accommodation: single room double room
- Union Hotel 90 USD 125 USD
- Hotel Turist 51 USD 75 USD
- Lev-Intercontinental 140 USD 195 USD
- Holiday Inn 125 USD 175 USD
- Austrotel hotel 110 USD 170 USD
- Slon-Best Western 100 USD 150 USD
- Hotel Park 37 USD 50 USD
- other hotel
Accompanying person: YES NO
Arrival Date:
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Booking required YES NO
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with accompanying person YES NO
WE ARE LOOKING FORWARD TO WELCOME YOU IN SLOVENIA
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I'm trying to use the Sequential Gaussian simulation software in GSLIB
(Geostatistical Software Library by Deutsch and Journel, 1992), to obtain
realizations of permeability. I've examined the results from my first
realization with the SGSIM code and noticed that a few of the estimates are
anomalously high. These estimates are generally located in areas lacking
significant well control. The natural log of the data range from approximately
-7 to +7, however the estimates range from -7 to +38.
If anyone has some insight into this problem, I would appreciate learning more
about how to avoid the anomalously high estimates. If the high estimates are
simply an unavoidable artifact of the algorithm, I would also appreciate knowing
this information.
Thank you,
Elise Bekele
Graduate Student PhD, Hydrogeology
University of Minnesota
Department of Geology & Geophysics
310 Pillsbury Drive, S.E.
Mpls., MN 55455
e_bekele@...
phone: 612-627-4777
fax: 612-625-3819
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Announcement of Two Open Research Associate Positions:
The Institute for Urban and Regional Research at the Austrian Academy of
Sciences is seeking two scholars with a strong commitment to
interdisciplinary regional research to complement its research capacity
in the area of theoretical and methodological regional science. The
successful candidates are expected to play an important role in the
institute's ongoing projects in GeoComputation and to participate in
externally funded fundamental research. In addition, an important aspect
of these positions is to support and contribute to the further
development of the computing capabilities of the institute which include
neural network modelling software projects. Current research projects
deal with 'Neural Spatial Interaction Modelling and Genetic Algorithms'
and 'System Modelling for integrated sustainable development in the
information society'.
The ideal candidates have an extensive background in quantitative
regional science, as well as excellent computer programming skills.
Expected areas of expertise include a combination of applied (spatial)
econometrics, spatial modelling, and/or software engineering in the
fields of Computational Intelligence/Artificial Intelligence, as well as
familiarity with programming languages (C, C++). A working knowledge of
statistical software, neural network software and/or GIS software is
desired.
The first research associate position is a tenure track position with
appointment in the beginning of 1998 (initial appointment is for two
years). Salary will depend on qualification (e.g., a candidate with PhD
and several years of working experience might expect around 31.000
USDollar p.a. gross).
The second research associate position is a non-tenure track position
with appointment starting in June 1998. Initial appointment is for two
years and is expected to be renewable at least up to two further years.
The salary for a PhD candidate is about 25.000 USDollar (p.a. gross) and
for a PostDoc approximately about 39.000 USDollar (p.a. gross).
Please send CV, statement of research goals and objectives, and the
names and addresses of three references (plus indication which job you
apply for). Review of application will begin February 1, 1998, positions
will remain open until filled.
to apply: Manfred M. Fischer, Director
Institute for Urban and Regional Research
Austrian Academy of Sciences
Postgasse 7/4/2
1010 Vienna, Austria
e-mail: manfred.fischer@...
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Elise, in the parameter file, check to see how you have prescribed the
upper tail option and parameter. Also check your setting of zmax. sgsim
should not produce values above zmax. However, I believe in the original
version of sgsim (v1.20) the hyperbolic extrapolation model (option 4) had a
bug that caused the code to disregard zmax and produce large values.
This was only a problem under option 4. I'm not sure if it was fixed under
v1.40 or not. See the discussion of the upper tail extrapolation parameters
on pages 131-135 of GSLIB. I generally stick with the power model and
have found it to work well.
Good luck.
Sean A. McKenna
Geohydrology Department ph: 505 848 0713
Sandia National Laboratories fx: 505 848 0605
PO Box 5800 MS 1324 em: samcken@...
Albuquerque, New Mexico 87185-1324
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Bharat Lohani wrote:
>
> Hi All,
>
> I am looking for a book in stochastic simulation; should be very basic and
illustrated with examples ( pref. from Geoscience ) and specially designed for a
beginner ( which I am).
>
> Could you suggest me one please?
>
Hi,
for a beginner I would still recommend (if available)
Computer Simulation in Geology by J. Harbaugh & G. Bonham-Carter
Wiley, 1970!!!
Simulation & Geostatistics:
- GSLIB by C. Deutsch & A. Journel, Oxford Univ. Press, 2nd ed 1996
- Stochastic Modeling and Geostatistics ed. J.M. Yarus & R.L. Chambers
AAPG Publ. 1995
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Sorry for the inconvenience,
but I provided a wrong email address, when sending the announcement of
two open research positions at the Institute for Urban and Regional
Research at the Austrian Academy of Sciences.
if you want ot use email (for requests or whatever) please send to:
manfred.m.fischer@...
^^^
bye, Marion
the announcement text follows once again:
Announcement of Two Open Research Associate Positions:
The Institute for Urban and Regional Research at the Austrian Academy of
Sciences is seeking two scholars with a strong commitment to
interdisciplinary regional research to complement its research capacity
in the area of theoretical and methodological regional science. The
successful candidates are expected to play an important role in the
institute's ongoing projects in GeoComputation and to participate in
externally funded fundamental research. In addition, an important aspect
of these positions is to support and contribute to the further
development of the computing capabilities of the institute which include
neural network modelling software projects. Current research projects
deal with 'Neural Spatial Interaction Modelling and Genetic Algorithms'
and 'System Modelling for integrated sustainable development in the
information society'.
The ideal candidates have an extensive background in quantitative
regional science, as well as excellent computer programming skills.
Expected areas of expertise include a combination of applied (spatial)
econometrics, spatial modelling, and/or software engineering in the
fields of Computational Intelligence/Artificial Intelligence, as well as
familiarity with programming languages (C, C++). A working knowledge of
statistical software, neural network software and/or GIS software is
desired.
The first research associate position is a tenure track position with
appointment in the beginning of 1998 (initial appointment is for two
years). Salary will depend on qualification (e.g., a candidate with PhD
and several years of working experience might expect around 31.000
USDollar p.a. gross).
The second research associate position is a non-tenure track position
with appointment starting in June 1998. Initial appointment is for two
years and is expected to be renewable at least up to two further years.
The salary for a PhD candidate is about 25.000 USDollar (p.a. gross) and
for a PostDoc approximately about 39.000 USDollar (p.a. gross).
Please send CV, statement of research goals and objectives, and the
names and addresses of three references (plus indication which job you
apply for). Review of application will begin February 1, 1998, positions
will remain open until filled.
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Has anyone experience in the statistical analysis of trace-elements
within particular lithologies and structural blocks, correlation-
coeficients in particular.
I have digitized a geological map, and converted to ArcView 3.0
I also have a geochem data set for 9 trace elements in ArcView.
Once overlain, i hope to perform additional statistical analysis.
The area is a mineralized shear zone.
Thank you -
Mark McCullars
Graduate Student
Auburn University
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In his response to Sophie Dufresne, P. Goovaerts wrote:
>1) You could generate two realizations using the short-range and
> long-range semivariogram models, then create the final realization
> as the sum of the two fields. It works well for non-conditional
> simulation (e.g, see Goovaerts, 1992 for a one-dimensional example),
> but it is inappropriate if you want to honor observations at data
> locations.
One way to do this conditionally, that is also attractive
from a geological / soft-data perspective, is to use a two-stage
simulation approach where the long-range model represents the
correlation of some discrete geological entities (e.g., facies),
and the small-scale model(s) represent local correlation of the
property of interest (e.g., hydraulic conductivity) within facies
bodies. You simulate the spatial distribution of facies
first using a categorical indicator stochastic simulation method.
Realizations can be conditioned to observations of facies type.
Then, for each facies type you simulate a complete
field of the variable of interest, with short-range correlation
structure, using either continuous indicator or gaussian
simulation method. These realizations can be conditioned to
observations of the simulated variable (e.g., hydraulic conductivity).
The final result is obtained by mapping each local realization into
those spatial locations where the corresponding facies type was
simulated, and honors observations of both facies type and
hydraulic conductivity.
Possible advantages of this approach are that 1) it
allows for a distinct separation of scales rather than a smooth
transition between scales of correlation such as you would get with
a single multi-scale variogram model, 2) it allows direct
conditioning to both facies type and hdyraulic conductivity,
and 3) it incorporates qualitative geological information
(facies classifications).
Possible disadvantages are 1) you must simulate several fields to
combine into one final realization - computationally demanding,
and 2) you must have enough data to support estimation of local
variograms within each facies type. Overall, however, this
is a simple, intuitive, and consistent approach to simulating
correlated fields with multiple discrete scales of structure,
such as one expects to see in geological systems where there
are discrete scales of structure (e.g., sedimentary structures,
various scales and types of bedding). We are using this approach
in a stochastic groundwater modeling study, and I noticed
other investigators using similar approaches at the recent
AGU conference.
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Tim Scheibe -- Senior Research Scientist -- Hydrology
Pacific Northwest National Laboratory
P.O. Box 999 MSIN K9-36 Richland WA 99352
Phone: (509)372-6065 FAX: (509)372-6089 E-mail: td_scheibe@...
WWW: http://terrassa.pnl.gov:2080/
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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Tim,
Your suggested approach sounds great. The physical basis is
intriguing. For building geological models for reservoir
simulation for the oil industry we currently use the Heresim 3D
software from Beicip-Franlab,Paris and Geomath, Houston. The idea that
facies can be correlated over long range, i.e. over several well
spacings is the first idea. Then within each facies category, the
petrophysics is attributed to each facies.
For Facies, the simualtion technique is the truncated gaussian using
lithofacies proportions to constrain the volume of facies and to
provide the cut-offs for the truncation at each stratigraphic level.
Vertical proportion curves are a fixed probability vector along each
level of the bed layering. Variograms provide a geometry for the
realizations (Gaussian widths). Non-stationarity is handled through
multiple vertical proportion curves.
Each facies has a petrophysical model describing porosity and 3
directions of permeability. A MonteCarlo simulation is most commonly
used here. Core and logs provide most of the data. There is a
volume variance/sample support arguement as to why we might not want
to honor the exact permeability value from a core plug for a cell
that is 25mx25mx0.25m in size.
The approach above is focused on the goal of reservoir simulation. The
physical basis is in close agreement with what you propose. I
strongly agree with the facies first approach.
Regards,
David
David Garner TerraMod Consulting, Inc.
phone: (403) 294-5136 17th Flr, 715 - 5th Ave, SW
fax: (403) 264-4375 Calgary, AB T2P 2X6
e-mail: garner@... Canada
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Greetings to all,
this is my last message before 1998. Next update of the
archives will therefore be made on the 5th of January.
I wish you all a merry Christmas, a Happy New Year
and the most beautiful variograms for 1998 !
Sincerely yours
Gregoire
<gregoire.dubois@...>
<Moderator of the AI-GEOSTATS mailing list>
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I just want to mention that indeed, in the context of reservoir
description, a two-step approach involving a prior modeling of the
spatial distribution of facies is a good idea.
Examples of the implementation of this algorithm can be
found in these two papers:
1) Goovaerts, P (1996) Stochastic simulation of categorical variables
using a classification algorithm and simulated annealing,
Mathematical Geology, 28: 909-921.
2) Goovaerts, P & A.G. Journel (1996) Accounting for local probabilities
in stochastic modeling of facies data, SPE Journal, 1:21-29.
<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
________ ________
| \ / | Pierre Goovaerts
|_ \ / _| Assistant professor
__|________\/________|__ Dept of Civil & Environmental Engineering
| | The University of Michigan
| M I C H I G A N | EWRE Building, Room 117
|________________________| Ann Arbor, Michigan, 48109-2125, U.S.A
_| |_\ /_| |_
| |\ /| | E-mail: goovaert@...
|________| \/ |________| Phone: (313) 936-0141
Fax: (313) 763-2275
<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
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Hi all,
This approach of modeling facies first makes great sense. We currently are
using a transition probability/Markov approach to modeling facies in
aquifer systems. This has been very successful in alluvial aquifer
systems, where correlation lengths are typically less than well spacings
and geological intuition must enter the modeling. Additionally, the Markov
chain models allow for asymmetrical distributions of facies (e.g., as found
in fining-upward tendencies of fluvial sediments), something that the
standard gaussian/variogram approach can not do. This methodology has been
published in Mathematical Geology by Steve Carle and Graham Fogg [1996, v.
28(4), p. 453-476; 1997, v.29(7) p. 8910918, and v. 29(2), p. 231-244].
Additionally, a SEPM volume on geostatistics will include a paper by Carle,
et al on use of this technique. I believe that Steve Carle is planning to
release the fortran code (a modification of GSLIB code) in the near future.
Gary
At 6:02 AM 12/21/97, David Garner wrote:
>Tim,
>Your suggested approach sounds great. The physical basis is
>intriguing. For building geological models for reservoir
>simulation for the oil industry we currently use the Heresim 3D
>software from Beicip-Franlab,Paris and Geomath, Houston. The idea that
>facies can be correlated over long range, i.e. over several well
>spacings is the first idea. Then within each facies category, the
>petrophysics is attributed to each facies.
>
>For Facies, the simualtion technique is the truncated gaussian using
>lithofacies proportions to constrain the volume of facies and to
>provide the cut-offs for the truncation at each stratigraphic level.
>Vertical proportion curves are a fixed probability vector along each
>level of the bed layering. Variograms provide a geometry for the
>realizations (Gaussian widths). Non-stationarity is handled through
>multiple vertical proportion curves.
>
>Each facies has a petrophysical model describing porosity and 3
>directions of permeability. A MonteCarlo simulation is most commonly
>used here. Core and logs provide most of the data. There is a
>volume variance/sample support arguement as to why we might not want
>to honor the exact permeability value from a core plug for a cell
>that is 25mx25mx0.25m in size.
>
>The approach above is focused on the goal of reservoir simulation. The
>physical basis is in close agreement with what you propose. I
>strongly agree with the facies first approach.
>
>Regards,
>David
>
>
>David Garner TerraMod Consulting, Inc.
>
>phone: (403) 294-5136 17th Flr, 715 - 5th Ave, SW
>fax: (403) 264-4375 Calgary, AB T2P 2X6
>e-mail: garner@... Canada
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Gary Weissmann
LAWR - Hydrologic Sciences
University of California
One Shields Avenue
Davis, CA 95616-8627
gweissmann@...
(530) 752-1372
(530) 752-5262 FAX
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Dear Colleagues
We are pleased to send our most warm wishes for the Christmas and the
New Year to everybody who is interested in our software: UpFile, 3Plot
and more coming soon.
We are grateful to everybody who took part in the BETA testing and sent
us their useful comments and suggestions as well as registration post cards.
Please, enjoy the Christmas card and views of Moscow we have prepared for you
at:
http://www.ibrae.ac.ru/~mkanev/
Yours faithfully,
GEOSTAT OFFICE group
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* Please discard this message,
* if you are not interested in FREE Java GIS.
*
Hello,
Java GIS - JShape 1.3 is released.
This new version of JShape contains the
following features :
(1). View regular shapefiles through WWW internet/intranet
or local file systems.
(2) support the compressed shapefiles which shrink the regular
shapefiles to 3-4 times smaller. This means GIS data is transfered
faster through network and stored more on distribution media.
(3) support the external programming interface which allows users
to implement their customized Java routines.
(4) support the grid shapefiles which allow users publish the large
GIS data (say 100+MB) through WWW internet.
(5) support the dynamic map interface which allows users to implement
their own tiled image system on the fly.
(6) lots of extensions for all kinds of GIS purposes
(7) support the internation languages.
Please visit JShape homepage : http://shiuhlin.ml.org
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My question concerns current thinking on correlations involving ratio
variables that are proportions and rates. If this problem would be
better posted on another list, i would be interested in suggestions.
Let me also say that my background in is in psychology rather than
geography.
We are interested in identifying block group level census correlates
(e.g., persons under age 29, males, no high school diploma, etc) of an
unlawful behavior measured by 911 calls for service (911 calls are
aggregated to the block group level).
Because the block group population varies considerably, we
standardized all variables by dividing by block group population prior
to computing correlations and a regression model. A reviewer kindly
pointed out that correlations involving ratio variables have been long
recognized to lead to spurious correlations between ratio variables
even when the numerators of the ratio variables are themselves
uncorrelated. He also provided two citations (a 1972? conference paper
by Schuessler and a 1974 Sociological Methodology chapter by Fuiguitt
and Lieberson). I also looked at Cohen and Cohen's book on regression.
From these references, i get that a) it is not correct to infer an
association between the numerator components of two ratio variables
from the association between the two ratio variables. b) One must be
clear on whether the research question concerns the rate of the event
or the underlying count of the event. And, c) that controlling for the
denominator (here, populations) is generally alway preferable to using
ratio variables.
In response to points a) and b), i would say that we actually are
interested in relationships between the ratio measures rather than
between the ratio numerators because ratios are more informative for
planning purposes and because relationships between the ratio
numerators can best be done by person-level data because of
aggregation bias. When we re-ran analyses using the cout versions of
the variables and treating population as a control variable (point c),
we encountered serious collinearity problems (no surprise). All of
this leads me to think we should stick with ratio measures.
I think i should also be concerned about spatial autocorrelation.
However, i am not quite clear on how to work with it. I would welcome
any advice members might have on this concern.
I am interested in how members of this list would work with this
problem. Citations would also be welcome. Please respond either on or
off the list.
Thanks, Gene Maguin
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We got your name on a key word search of a commercial e mail data base
which suggested that you might be interested in space travel.
This is a one time mailing.
++++++++++++++++++++++++++++++++++
Subject: Space Flight
as seen on ABC, NBC, CBS, CNN and featured on Microsoft/NBC....
Have you ever dreamed of being an astronaut?
Now is your chance!
With the Civilian Astronauts Corps -
http://www.phoenix.net/~advent/civilastro/
you can experience the wonders and excitement of space travel!
The Civilian Astronauts Corps, CAC, is organized to make
space flight possible for its members.
The CAC flight will be much like Alan Shepard's, the first American in
space. Its vertical ascent will be in excess of 2,500 miles per hour.
Those on board will experience the uniqueness of about four minutes of
continuous zero gravity. The thrilling view of the infinite heavens is
almost impossible to describe.
Only the first 2,000 applicants will qualify for flight membership in
the CAC.
The flights are planned to start on July 4, 1999 just off the coast of
Galveston, Texas.
A flight membership costs only $3,500.
Those who have not yet decided to fly can also participate in
the Civilian Astronauts Corps.
A General Membership is available for only $100 and includes:
a lapel pin,
membership card,
certificate of participation
a subscription to the CAC news letter, COUNTDOWN
an invitation to the pre launch party July 3, 1999.
NOW IS THE TIME
Visit our website at
http://www.phoenix.net/~advent/civilastro/
and join us in this great adventure!
For more information send a SASE to:
Civilian Astronauts Corps
Suite 2000
403 NASA Road 1 East
Houston, Texas 77598
E-mail us at cac@...
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DO NO
Here is my question: I am attempting to test a theory about species
distributions. I am planning on using the Mantel test for my analyses and
am wondering if (1) anyone has written a program out there (or knows of one)
that can handle a data set that has >800 records and up to 30 variables per
record; or (2) has used S+ (or some-such-program) to write a program that
can handle this volume of data? Cathy
Cathy Schloeder
Utah State University
Dept. Fisheries and Wildlife
UMC 5210
Logan, UT 84322-5210
Telephone: 801-797-1346
Fax: 801-797-1871
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With apologies for cross-posting:
CONFERENCE ANNOUNCEMENT
3RD INTERNATIONAL CONFERENCE ON GEOCOMPUTATION
17-19th September 1998 Bristol UK
******************************************************
LAST DATE FOR ACCEPTANCE OF ABSTRACTS: 15 JANUARY 1998
******************************************************
The 1998 Annual GeoComputation Conference will take place
at the Department of Geography, University of Bristol.
The Conference will be based around a series of sessions
related to the following themes and invited Keynote
Speakers:
Dynamic Modelling - Peter Burrough
Geographical Analysis and Explanation Machines - Stan
Openshaw
Virtual Libraries - Mike Goodchild
Modelling Virtual Environments - Mike Batty
Physical Process Modelling - Malcolm Anderson
Spatial Data Analysis - Luc Anselin
Visualising Alternative Geofutures - Keith Clarke
Diffusion Modelling - Andrew Cliff/Peter Haggett
Remote Sensing: from Data to Understanding - Paul Curran
and colleagues
Concluding Keynote Address - Helen Couclelis
An accompanying Keynote Book will be available to all
Conference Delegates at the Conference (included in
registration costs).
Additional Keynote contributions and sessions are under
review.
The provisional Programme is as follows:
Thursday 17th September Arrival and Registration
Opening Address and Reception
3-course Hotel Dinner
Friday 1 8th September Morning Paper Sessions
3-course Hotel Lunch
Afternoon Paper Sessions
CONFERENCE DINNER ON BOARD THE
S.S. GREAT BRITAIN
Saturday 19th September Morning Paper Sessions
3-course Hotel Lunch
Closing Address and Reception
Accommodation will be provided in the Hawthorns Hotel,
Woodland Road, Clifton, Bristol which is located 200m
from the Geography Department.
Registration Costs for the Conference are as follows:
Before 1st July 1998:-
Full Residential - 205 pounds
Daily Delegate - 110 pounds/day
Postgraduate Residential (no evening meals) - 125 pounds
(en-suite priority booking is available for an extra 40 pounds)
After 1st July 1998:-
Full Residential - 240 pounds
Daily Delegate - 120 pounds/day
Postgraduate Residential (no evening meals) - 160 pounds
Early booking (prior to 1st July 1998) is advised to guarantee room
availability.
Further Details, Booking Forms and Updates are available
at the Conference Web Site:
http.//www.ggy.bris.ac.uk/geocomp/geocomp.html
. . . or for further information contact the organising committee:
Dr S.Brooks, Professor P. Longley, Dr W.Macmillan,
Dr R. McDonnell, Mr R. Abrahart
E-mail: geocomp-conf@...
Telephone: +44 (0) 117 928 9109
Fax: +44 (0) 117 928 7878
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This mail message, and any attachments, has been checked for Viruses
by ADAS before dispatch to the Internet.
Form: Memo
Text: (27 lines follow)
Happy New Year all Geostatsers!
I have some data collected at different latitudes (relatively small range)
which I would like to transform into km so I can carry out some
geostatistical analysis.
Can anyone tell me what would be the easiest way to go about this ?
Many thanks
Alison
________________________________
Dr Alison Riding
ADAS Consulting Ltd.
Woodthorne
Wolverhampton
WV6 8TQ
U.K.
Tel: +44 (0) 1902 693129
Fax: +44 (0) 1902 693166
E-Mail: Alison_Riding@...
________________________________
Use Proportional Font: true
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> I have some data collected at different latitudes (relatively small range)
> which I would like to transform into km so I can carry out some
> geostatistical analysis.
> Can anyone tell me what would be the easiest way to go about this ?
> Many thanks
> Alison
> ________________________________
> Dr Alison Riding
> ADAS Consulting Ltd.
> Woodthorne
> Wolverhampton
> WV6 8TQ
> U.K.
>
> Tel: +44 (0) 1902 693129
> Fax: +44 (0) 1902 693166
> E-Mail: Alison_Riding@...
Dr. Riding,
I have converted back and forth between various geodetic datums and state
plane coord systems using the freeware CORPSCON. It was developed and is
maintained by the US Army Topographic Engineering Center, Ft Belvoir, VA. It is
a
terrrific and free package, but I am unsure how well it works for areas outside
the US
or where your area of interest is. I suspect it may do well worldwide at least
for
conversion to Universal Transverse Mercator. You should easily find it by
brousing
the web. -Ed
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Greetings and happy new year to all !
Here under is attached a conference announcement which should
interest GIS developers.
Something completely different: I have added a new item called "Jobs"
in the AI-GEOSTATS Web pages. There is an online form which should
be used by those who want to announce jobs related to spatial data
analysis, GIS and Geostatistics. So please don't hesitate to use it.
Best regards
Gregoire
--
Gregoire Dubois Tel. 39-332-78.99.44
Joint Research Centre Fax. 39-332-78.54.66
Environment Inst. TP 321 Email: gregoire.dubois@...
I-21020 Ispra (Va), ITALY URL: http://curie.ei.jrc.it/
Dear Colleagues,
Please be so kind as to distribute the attached Conference Announcement
and Call for Papers further in your geographical and scientific area.
We do apologize in anticipation if you receive this message more than
once.
Wishing you a Happy Holiday Season, a Successful New Year, and hoping to
see you all at TOOLS in beautiful Santa Barbara, California in August
1998!
*******************************************************
TOOLS USA '98
Technology of Object-Oriented Languages and Systems
27th INTERNATIONAL CONFERENCE AND EXHIBITION
The Move Towards Componentware
Santa Barbara, California, August 3 - 7, 1997
CONFERENCE ANNOUNCEMENT AND CALL FOR PAPERS
*******************************************************
TOOLS is the major international conference and exhibition devoted to
the applications of object-oriented technology. TOOLS USA '98, the
twenty-seventh TOOLS International Conference and Exhibition, returns to
Santa Barbara for the eighth time and continues the commitment to
excellence demonstrated by earlier conferences in Europe, the Pacific,
Asia and the US. Standards established for TOOLS by earlier conferences
in the series include:
* Emphasis on the practice of object-oriented technology and its
application in industrial environments, complementing the more
academically-oriented perspective of traditional conferences.
* Solid technical program, based on a strict refereeing process
conducted by an international program committee comprised of both
academic and industry leaders:
* Balanced coverage of the wealth of approaches, trends and =
variants in the object-oriented community.
* Combination of tutorials by recognized experts, invited talks by
innovators in the field, relevant panel discussions, technical papers
targeted to industry practitioners, and an up-to-date exhibition of
products and services
The TOOLS 27 Conference Proceedings will be made available worldwide
through the IEEE Computer Society as well as from the TOOLS Conference.
SUBMITTING A PAPER
TOOLS USA '98 is now soliciting papers on all aspects of object-oriented
technology. All submitted papers will be refereed and judged not only
according to standards of technical quality but also on their usefulness
to practitioners and applied researchers. A non-exhaustive list of
suggested topics includes:
+ Reports of experiences with O-O technology
+ Migration toward O-O software development
+ Management and training issues
+ User interfaces, persistence and databases
+ Specification, modeling, and patterns
+ Class management and evolution
+ Empirical and field studies
+ Production, distribution and revenue collection of industrial-quality
reusable components
TOOLS 27 will feature a special emphasis on issues relating the
challenges of building components, libraries, and frameworks. Technical
papers that report and assess advances and experiences in this area are
expressly sought. A special "Object-Oriented Reuse " track will include
workshop(s), tutorials, panel discussions, and featured speakers.
Papers should be in the range of 10 to 20 double-spaced pages.
Submission should be sent to the Conference Committee Office:
TOOLS USA '98
Paper Submission
ISE Building
270 Storke Road, 2nd Floor.
Goleta, CA 93117 USA
Phone: (805) 685-1006, FAX: (805) 685-6869
E-mail: tools@...
All submissions must be received by March 6, 1998 to be considered for
inclusion in the conference. Notification of acceptance will be sent by
April 6, 1998. Final manuscripts will be due to the publisher May 8, 1998.
Proposals for tutorials, panels, workshops are also solicited and should
be sent to the same address by January 31, 1998.
Exhibitors should contact the Conference organization for more information.
A special ISE Eiffel User Workshop will take place on Tuesday, August
4th. As in past years, the meeting will provide a forum for users to
share experiences and interact with peers who have been successful in
implementing Eiffel-generated application.
DON'T MISS the Fifth International Symposium on Teaching Object
Technology on Friday, August 7th! A large-scale event to be devoted
exclusively to O-O education, this symposium will be an opportunity for
teachers in academia, training managers in companies, and everyone with
an interest in O-O methods to discuss the problems and techniques of
teaching this approach.
As of January 1, 1998, information on the submission and review process,
including author guidelines, will be available on the World Wide Web at
http://www.tools.com. Furthermore, general information on all TOOLS
Conferences can be found at the same address.
REGISTRATION FEES AND PRACTICAL INFORMATION
Registration Fees: EARLY-BIRD ADVANCED REGULAR
Before March 6 Before June 26 After June 26
1 Day $445.00 $475.00 $495.00
2 Consecutive Days $695.00 $745.00 $795.00
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4 Consecutive Days $995.00 $1,165.00 $1,295.00
Symposium on Teaching Object Technology
(if registered for at least two days of the conference)
$245.00 $275.00 $300.00
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(Symposium only) $375.00 $325.00 $345.00
Full-Time Faculty Member: Take advantage of a 25% discount on the above
registration fees
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registration fees
A 10% discount is applicable to any registration of three or more people
from the same company site at the same time for a minimum of 2 days
attendance. For 5 or more people the discount is 20%. These discounts
are applicable to Regular and Faculty registrations only.
REGULAR AND FACULTY REGISTRATION
Prices include; a copy of the tutorial notes for each tutorial attended;
a copy of the conference proceedings; breaks; lunches; beach barbecue on
Monday, August 3; open-air classical concert and conference dinner on
Wednesday, August 5; and free access to the exhibit.
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Prices include; a copy of the tutorial notes for each tutorial attended;
a copy of the conference proceedings; breaks; lunches; and free access
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may be purchased separately.
PAYMENT & CANCELLATION
Payment should be made by check, credit card or international money
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TOOLS USA '97 will be held at the Fess Parker's Double Tree Resort, the
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E-mail: tools@...
There is a quick and dirty method for converting the lat long values into
a metric rectangular coordinate system. This should be allright for a
small area but you might want to check the resutls carefully. I've only
used this for quick exploratory means:
For
latitude (a) [in degress]
longitude (b) [in degrees]
r is the radius of the earth which in KM is appx.6375 km
x = r cos(a) cos (b)
y = r cos(a) sin (b)
z = r sin(a)
x,y,z will be in the units of r.
As I said this is a fast way to get to a rectangular system but probably
is not the best.
If you find a better way please let me know as I have been looking for a
proper way to project my own data without resorting to the above, which
works well for exploratory analysis but is not proper (doesn't take
into account the fact that the earth is not a perfect sphere)
Thanks
Mike
sawada@...
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Preliminary Announcement
First International Health Geographics Conference
October 16-18 1998
Venue: The Maritime Institute of Technology, Baltimore, Maryland, USA
Sponsors
The Johns Hopkins School of Public Health
Environmental Systems Research Institute, (ESRI), Inc.
(Additional Sponsors/Supporters Invited)
Background: The broad field of health care is increasingly intertwined
with
global information issues, and thus involves the integration of many
disciplines. A significant and important characteristic of health and
medical
information is the geographic relevance on the macroscale (e.g., nationwide
access to health care, control of malaria, or climatic effects on disease),
at
the mesoscale (e.g., regional emergency services, local access to health
facilities), and microscale (e.g., managing the treatment of melanoma on
the
human body). As the needs of the various health fields have grown in size,
scope and complexity, so too has the information technology necessary to
capture/acquire, manage, analyze, present and otherwise support the
information
in ways that increase our knowledge base of the problems and issues
confronting
us, and inform sound actions based on this information.
Geographic Information Systems (GIS) have evolved as an empowering
technology,
enabling the health geographics professional to use, analyze and present
information in ways not possible with textual and numerical information
systems
(e.g., word processors, data bases, spreadsheets). With GIS, the user is
able
to analyze the spatial and pattern information inherent in the
geographically
based health data. In comparison with other relevant technologies, GIS
offers
greater awareness and ability to respond to health care, medical and
research
issues at the appropriate scale. The robustness of GIS is illustrated
best by
a diverse variety applications: space/time cluster analysis, spatial
trends,
siting of facilities, modeling heterogeneity with covariates, optimizing
delivery of goods and services, predicting risk, exposure assessment,
identifying at-risk populations and defining corrective interventions,
image
classification, spatial reasoning and cognition, spatial multimedia,
animation,
visualization, correelations and so on.
Purpose of Conference: The First International Health Geographics
Conference
(IHGC) will comprehensively bring together for the first time people from
many
different disciplines who share a common foundation: the geographic
aspects of
health. The IHGC will foster dialogue between: doctors, medical
researchers,
epidemiologists, environmental scientists, geographers, geologists,
computer
scientists, statisticians, hydrologists, entomologists, toxicologists,
ecologists, business managers, regulators, and indeed, all those
appreciative of
the links between GIS and health.
Our focus is unrestricted within the domain of GIS and health; we seek to
promote international dialogue and shared learning through the presentation
and
discussion of high-quality research and applications. There are a variety
of
disciplines already identified to lead us towards this aim; case examples
from
Managed Care, Insurance, Pharmaceuticals, Epidemiology, Demography,
Environmental Health, Infrastructure/Facilities Management, Emergency
Systems,
Medicine, Web-based GIS, MIS, Community Health and others will be
integrated
with Methods and Processes focusing on Data Creation/Acquisition, Spatial &
Statistical Analysis, Data Dissemination/Presentation, Automated Systems,
and
Health Information Management to provide a uniquely informative and
enjoyable
experience for attendees.
Invited Keynote Speakers:
Alfred Sommer, MD MHSc, Dean, Johns Hopkins School of Hygiene & Public
Health -
invited
Robert Lawrence, MD, Associate Dean, Professional and Graduate Education,
Johns
Hopkins School of Hygiene & Public Health
Jack Dangermond, Chairman, Environmental Systems Research Institute, Inc. -
invited
John Wennberg, MD MPH, Center for Evaluative Clinical Sciences, Dartmouth
Medical School -invited
Patrick Gerland, UNSTAT
Others TBA
Conference Format
Day 1
Welcome and conference overview (Ric Skinner, The EADS Group and Omar Khan,
Johns Hopkins School of Public Health, Co-chairs, International Health
Geographics Conference)
Keynote speaker -TBA
Workshop I- Statistical Issues (Chair: Subhash Lele, Johns Hopkins School
of
Public Health)
Workshop II -- Community Health Status Assessment and Interventions (Chair:
Robert Aronson, Johns Hopkins School of Public Health - invited)
Workshop III * Data to Decision Making (media types, formats, Atlases)
(Chair:
Bruce Campbell, UNFPA/Royal Tropical Institute)
Workshop IV * Information technology and Web-based GIS (Chairs: Bill
Davenhall,
ESRI; others TBA)
Workshop V- Overview of GIS programs (Jayanth Devasundaram, Maryland
Department
of Health and Mental Hygiene; Patrick Gerland, UNSTAT -invited)
Workshop VI and VII * Demographic Evaluations, others TBA
Orientation: evening (IHGC Organizing Committee)
Discussion Groups:
- GIS and Geographical Targeting for Poverty Reduction and Rural
Development
(Facilitator: David Bigman, The World Bank)
Others TBA
Day 2
General Session2: Welcome/keynote: TBA
Concurrent Sessions:
I, II, III, IV: Public Health (Environmental Health, Epidemiology, Health
Policy, International Health, Microbiology)
Chairs: Greg Gurri-Glass, Johns Hopkins School of Public Health
Martin Hugh-Jones, Lousiana State University
Isabelle Nuttall, WHO -invited
B. Infrastructure/Facilities Management (TBA)
C. Medicine/ Veterinary Medicine (Peter Cowen, North Carolina State
University)
D. Emergency Systems (TBA)
12:00 - 1:30 p.m. -- Luncheon & Speaker
1:30 * 4: 30 -- Concurrent Sessions Continue
4:30 - 6:00 p.m. -- Sponsored Mixer
6:00 - 7:00 p.m. -- Dinner & Speaker
7:00 * 9:00 p.m. -- Late Breakers, Discussion Groups:
- GIS and Development (Facilitator: Omar Khan, Johns Hopkins School of
Public
Health)
- The pitfalls and limitations of applying GIS in developing countries
(Facilitator: Michael McDonald, BASICS -invited)
Others TBA
Day 3
Keynote speaker *TBA
8 * 12 : Concurrent sessions
A. Public Health, I, II, III, IV
B. Social Services
C. Community Health
D. Managed Care and the private health provision sector (Potential Chair:
Blue
Cross)
12:00 - 1:00 p.m. -- Lunch (informal meeting)
1:00 - 3:00 p.m. -- Concurrent Sessions Continue
3:00 - 4:30 p.m. -- General Session: Conference Wrap-up
IHGC Organizing Committee (confirmed to date; others to be invited):
Omar Khan, Johns Hopkins School of Public Health (Co-chair)
Ric Skinner, The EADS Group (Co-chair)
Subhash Lele, Johns Hopkins School of Public Health
Jayanth Devasundaram, State of Maryland Dept. of Health and Mental Hygiene
Tom Usselman, National Academy of Sciences
Barb Tempalski, University of Washington
Rowland Tinline, Queen's GIS Lab, Ontario
Joe Lovett, CA State-San Bernadino
Susan Lambert, State of Kentucky
Others to be added between now and final program, Jan 31 1998. We invite
participation and content reviewers from all relevant fields.
Submission of papers and posters
Please forward an abstract of your proposed paper to the below address for
earliest consideration. Please also indicate your preference for a paper
or
poster. In addition, if you have a discussion group you would like to
form, or
be part of , from the information in this announcement, write a short
letter to
this effect.
As all the content topics have not been determined, we welcome papers
pertaining
to GIS in health. Following your submission the review committee will
contact
you to make recommendations on sessions and presentation format.
More information on the IHGC will be sent in late January, 1998.
Address for correspondence, paper submission and general inquiries:
International Health Geographics Conference Committee
C/o Omar A. Khan, Co-Chair
1600 Ruxton Road, Suite B7
Baltimore, Maryland 21204
USA
Email: okhan@...
PH: 410-659-6149
FAX: 410-659-6266
--
Gregoire Dubois Tel. 39-332-78.99.44
Joint Research Centre Fax. 39-332-78.54.66
Environment Inst. TP 321 Email: gregoire.dubois@...
I-21020 Ispra (Va), ITALY URL: http://curie.ei.jrc.it/
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Date: Mon, 29 Dec 1997 13:23:30 GMT
From: Dell Erickson <ricks@...>
To: ECOLOG-L@...
Subject: SIERRA CLUB POPULATION WEBSITE
Sierrans for U.S. Population Stabilization has a web presence at:
http://www.ecofuture.org/ecofuture/susps/
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Hello Alison -
There is a free program called Corpscon put out by the US Coast and
Geodetic Survey which will convert from lat/long to UTM etc. It is
available at http://www.tec.army.mil/TD/corpscon.html or other places I'm
sure. Let me know if you want me to try to send it to you.
Cheers,
Med Bennett
At 11:53 AM 1/6/98 GMT, you wrote:
>This mail message, and any attachments, has been checked for Viruses
>by ADAS before dispatch to the Internet.
>
>
>Form: Memo
>Text: (27 lines follow)
>
>Happy New Year all Geostatsers!
>
>I have some data collected at different latitudes (relatively small range)
>
>which I would like to transform into km so I can carry out some
>
>geostatistical analysis.
>
>Can anyone tell me what would be the easiest way to go about this ?
>
>Many thanks
>
>Alison
>
>
>
>________________________________
>Dr Alison Riding
>ADAS Consulting Ltd.
>Woodthorne
>Wolverhampton
>WV6 8TQ
>U.K.
>
>Tel: +44 (0) 1902 693129
>Fax: +44 (0) 1902 693166
>E-Mail: Alison_Riding@...
>________________________________
>Use Proportional Font: true
>--
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>*As a general service to list users, please remember to post a summary
>of any useful responses to your questions.
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>"unsubscribe ai-geostats" in the message body.
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>
>
*********************************
Med Bennett
http://www.indra.com/~mbennett
mbennett@... (home)
bennettm@... (work)
303-449-0648 x128 (work)
Boulder, Colorado USA
40d 1.635' N, 105d 17.320' W
*********************************
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Hi, I used a couple of utilities, but the more versatile is proj.4 from
USGS, you can get it at
http://kai.er.usgs.gov/ftp/PROJ.4/proj.html
they have DOS and UNIX versions
----------------------------------------------------------------------------
--------
Peter von Bertoldi Phone: (519) 824-4120 x 4264/2904
131 Richards Building Fax: (519) 824-5730
University of Guelph pvonbert@...
GUELPH, Ontario Dept home page is working now ;-{)}
Canada, N1G 2W1 http://www..uoguelph.ca/lrs/
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Cathy Schloeder & Mike Jacobs wrote:
>
> Here is my question: I am attempting to test a theory about species
> distributions. I am planning on using the Mantel test for my analyses and
> am wondering if (1) anyone has written a program out there (or knows of one)
> that can handle a data set that has >800 records and up to 30 variables per
> record; or (2) has used S+ (or some-such-program) to write a program that
> can handle this volume of data?
Cathy & Mike,
a few years ago I wrote both a QuickBasic and a Fortran 90 version of
the Mantel test. These programs are very simple (as the test is), but
were intended for personal use, so they are not very user friendly.
The QuickBasic version is limited by the MS-DOS memory management and
cannot handle large matrices, whereas the Fortran 90 version works
with (almost) any size matrices. If you (or other ai-geostat people)
are interested, drop me an email and I'll send you the source and/or
the MS-DOS executable files.
In order to use the Mantel test program, you have to compute the
distance (or similarity) matrices with another program (the one you
prefer) and to convert these matrices into ASCII files.
I also have a program that performs this task, but it only supports
the coefficients I use more frequently, i.e. 4 dissimilarity
coefficients (Jaccard, Soerensen, Rogers & Tanimoto and Ochiai), 3
distances (euclidean, Manhattan and Canberra) and a species
association index (Fager & McGowan). Also this program has a "stone
age" user interface. It is available in Quickbasic and Fortran 90
versions (source and/or MS-DOS executable) and needs ASCII input files
(raw data).
Cheers,
Michele
------------------------------------------
Michele Scardi
Stazione Zoologica "A. Dohrn" di Napoli
Villa Comunale
80121 Napoli
Italy
tel: +39-81-5833201
fax: +39-81-7641355
email: mscardi@...
home page: http://www.mare-net.com/mscardi
------------------------------------------
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GIS PlaNET'98 September 7 - 11, 1998. Lisbon, PORTUGAL
The 1st GISPlaNET 98 Conference will be a forum for
sharing, disseminating, and integrating original
research and experience in the application of GIS to
issues of concern throughout the world. The topics to
be addressed include all the relevant areas of GIS
contributions to global sustainability and to life
quality improvement. Few are listed here:
Agriculture
Bio-Diversity
Climate Change
Crop Management
Demography
Economic development
Forestry management
Fisheries Management
Human Health and Epidemics
Meteorology
Trans-national Pollution
Artificial Intelligence
Geocomputation
Remote Sensing
Spatial Analysis
Spatial Decision Support Systems
Uncertainty and Quality
Automated Mapping
Emergency Management
Environmental Management
Mineral and Oil Surveying
Risk Assessment
Water Management
Submission
(abstracts): 13 March 1998
(Papers): 15 July 1998
More info at: http://www.gisplanet.org/planet.html
or contact planet@...
--
Gregoire Dubois Tel. 39-332-78.99.44
Joint Research Centre Fax. 39-332-78.54.66
Environment Inst. TP 321 Email: gregoire.dubois@...
I-21020 Ispra (Va), ITALY URL: http://curie.ei.jrc.it/
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