Hi Steve ... The series with centre (x, y, z) in fcc2 should be identical to the series with centre (x+1, y, z) in fcc1. So, if you take the centre of the new...
Hi Adrian, ... Yes, good work, I agree here. One face center is another's edge mid-point kind of thing....so, this should be true for the other lattice groups...
Hi Steve ... Just as a personal note, I find the series that have a natural centre are more "interesting" than those that don't and have Cs, C or Cv symmetry ...
Hi Adrian, ... Huh...I do not see either a C nor a Cv as one of the 17. I suggest that T and Oh are both present in the "7-slicers"... how would fcc1 C be...
Hi Steve ... They are labeled Cn and Cnv. They have an axis of rotational symmetry (n-fold) and any sweep centre lying on this axis would produce a series with...
Hi Adrian, ... I could use your keen eye here... can you please tell me what these symmetries are for the all the now posted fcc1 and the posted truncated...
Hi Steve ... Some individual polyhedra have more symmetry but the basic symmetry for each fcc1 series is, by column 1. Oh 2. Oh 3. Td 4. C4v 5. D2h 6. C2v 7....
Hi Steve ... It would be easiest for me to review them all when you have your final series. Are you finding the symmetry identification chart useful? ... No....
Hi Steve ... I'm not sure what your criteria for inclusion are, particularly for sweeps with cyclic symmetry only. It might be an idea to write up the criteria...
Hi Adrian, ... Those that are more than just able to be cut into two equal halves once. ... These are okay...just scroll down a bit further. ... Yes...
Hi Steve ... They looked the same to me all the way down. Can you give examples of N where you think they differ. ... As a test I just tried these two with the...
Hi Steve ... I meant to comment on this. The cyclic-only sweeps have a centre lying on an axis, where any centre on this axis has cyclic symmetry. Your...
Hi Adrian, This would really help too... I need a line of code to make the .off files too. These I could then import them into Great Stella, wherein, it would...
Hi Adrian, ... My mistake..you are quite right...out go these two dups. ... N -v 0.3,0.3,0.5 | antiview ... N -v 0.3,0.3,0.5 | antiview 2,2,0 was swept by 2n+2...
Hi Steve ... The column 8 2n+2 sweep contains duplicate polyhedra, and the polyhedra are the same ones as found in the column 7 4n+2 sweep. I've just seen your...
... Hi Adrian, ... Yes, I see that now...I was looking at the wrong file. It will be taken out too. ... Ah...so I will not try to shorten the names and shall...
Hi Adrian, The lattices look better now at APmain. All your suggested dups have been accepted and hence removed. I added a click out to the coordinate locals...
Hi Steve ... You need the ">" e.g. lattice2.py bcc 0 28 1.0,0.0,0.0 |conv_hull | off_color -f N -v 0.3,0.3,0.5 | antiview becomes lattice2.py bcc 0 28...
Hi Adrian, I just made a connection to APmain, from my main page at http://www.watermanpolyhedron.com/ Comments/suggestions as usual are most welcomed. After a...
Hi Adrian, I had a thought about trying to define a hex prism in lattice2.py. What if we used the points from a tr_oct... and select data from one set of...
Hi Steve ... Just a few short notes o The lattice program you have provided can't be used with the command lines given under the polyhedra because the program...
Hi Steve ... It is outside of what lattice2.py does, as the grid doesn't have just one edge length. However, if you include the lattice of the points then you...
Hi Adrian, ... Oh crap, sorry... I did not want to change that/anything in lattice2.py. You can ... Yes, I did figure that out by reading the program a while...
Hi Steve ... Here it is with the header text added http://www.freewebtown.com/adrian/tmp/lattice2.py ... A figure with O or Oh symmetry must have an axis of...
Hey all, Just joined the group. This is a general polyhedra group, right? Seems to be mostly Waterman polyhedra! :-) Anyway, I wrote a piece of software...
Hi Rob ... Nice to see you on the list. I have just started on a program to generate the Johnson solids. Do you know of any web references for the calculation ...
Hi All I was going through some animations I made and came across these sequences of concentric polyhedra. They start with a polyhedron then repeat the...
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