Hi Roger ... Steve's roots are in terms of an FCC lattice where the minimum distance betwen points is one unit. However, if you build FCC on a unit SC lattice...
Hi Roger ... The best procedure would probably be that if qhull failed then the points would be fitted to a plane, which would be rotated onto the xy-plane and...
Roger, ... To get lattice2.py to make my w3, it required this 0 6 thingie. The 6 here, is twice what my output is. ... uUm...it is 1/2 of the entered 0 6 (I...
Hi Adrian, ... This solution did occur to me. The convex hull function is pretty noisy on the screen when it fails. My strategy was to avoid calling the convex...
Hi Steve, ... There is another factor in the bravais program that may be different than what others conceive, that of what the cell itself is. In bravais, like...
Roger, Just out of curiosity, what are the sequences of sc, fcc, and bcc known to be in terms of N. As seen on the lattice pages... bcc 0,0,0=4n 1,0,0=4n ...
Hi Steve, ... rejected ?? ... If you mean the multiple convex hull thing, that is not being rejected. But I don't want to start anything on that right now. Not...
Hi Adrian, ... I found I still had the qhull installation here, and with it the man pages. I don't see anything of a verbosity flag, so it may be something ...
Hi Steve ... New lattice points aren't only picked up at values of 4n e.g. lat_grid bcc -C 0,0,0 -c s 10 | conv_hull -a | off_color -f 1,1,0,0.5 | antiview ...
Hi Roger ... The normal output can be turned off by setting the file stream pointer to zero, but this doesn't work with the error output. It doesn't look...
Hi Adrian, ... options. I remember you saying this, but what if more than one coordinate is needed. I haven't been able to do it on my bash shell. Maybe there...
Hi Roger ... If you use the -e switch then echo will recognise some backslash sequences like \n. The command would be echo -e "1,2,3\n4,5,6" | off_util ... All...
... This works here too. ... I then tried putting the following two lines in a txt file and piping it to off_util 1,2,3 4,5,6 This worked as well. I didn't...
Hi Adrian, ... I did it with the code below. It uses some standard redirection practices I found in "code quicky". Except instead of temporarily redirecting...
Roger, Please, let me say that all the bravais work you have done is capable of producing my desired Watermans. A rose by any other name is still a rose. As...
Hi Steve, Your note was a bit of a ramble. I'm not sure what your Y/N question actually is. However, there are a couple things I saw that I can respond to. ...
Hi Roger ... In the above terms the Waterman number is 2N/V^2, but N is the square of the sweep radius, R, so this is also 2(R/V)^2. ... Triclinic sweeps...
Hi Roger ... That looks fine as a wrapper. ... Yes, these issues are fixed/documented in the development version. I'm not too sure but I would guess I am...
Hi Adrian, ... I don't know why but I thought make_hull was calling qhull internals. I found the make_hull function out in the base code. No memory leak then. ...
Adrian or Roger, trying to align stuff - bravais with bravais... How come these two files below do not share the same origin ? bravais fcc -c s -g 4 -r 1,2...
Hi Roger ... make_hull does call qhull though. It isn't expected that qhull will be called directly from non-library code, which is why the qhull header had to...
Hi Adrian, ... Then N = V^2/2 or V = sqrt(2N) I tried this by taking the square root of the vectors internally in my program and then entering integer values...
Hi Steve, ... -r 1,2 would mean to take the square root of 1, which is probably not what you mean. I made them the square root of 2 for the example. Then ...
Hi Roger ... I think it will be a lot more than that. W100 has 126 vertices, so at that sort of "relative" radius you will be storing 60 vertices for each...
Roger, If you can't compile I can furnish the .exe for you. Anticipating that, it wil be at ... Yes. thank you...just what the doctor ordered. This is very...
Hi Roger ... I just had a thought that if you are calculating the face planes directly from the 8 corners of the lattice then the convex hull method also...
Roger, ... i am quite confused...why all the extra memory ??????? given a point set in excel... column A x column B y column C z column D distance from origin ...
Hi Steve, ... Sure. Use off_trans -S value e.g if you want scale something to 1/2 its size it would be off_trans -S 0.5 If you want a square root, you will...
Hi Roger, ... Good. That works for me. ... NO no no. I do not get this. Why can't you just take the same grid...the big one and just keep taking bigger scoops...
Antiprismers, my 2 projects for today...merge points vs merge hulls sample coding make 3 POINT SETS of different colored spheres. merge them and make a...
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