circular sections on an ellipsoid (something for galapagos?)

i'm wondering if there is anyone out there that might be interested in helping with a small (i assume) task to generate some circular sections on an arbitrary ellipsoid.

i am wondering in part if this might be accomplished in galapagos and would be interested in being contacted by anyone interested in such a challenge.

feel free to email me off list if this might be of interest.

thanks.

Replies to This Discussion

Permalink Reply by Jonathan Chertok on November 9, 2011 at 5:38am

Hi Chris.

Excellent.

Really very, very elegant.

Thanks for this

Jonathan

Permalink Reply by Jonathan Chertok on November 8, 2011 at 5:13pm

Hi Sistemiq,

On this one. Can I ask you to elaborate a little on it or if it is possible for me to work with the definition a little either by sending it on or off list? I am just getting started with GH but it is something I have wanted to work with for a long time and these kind of experiments are really nice because - well I find them interesting.

Anyway, I guess this is a galapagos script with some kind of evolutionary goal which is the circularity of the sections? And it has somehow refined things down to the point at which you are showing a "non-circularity" by some linear amount? And this is an "e to the whatever" /difference/ between the smallest and the largest radius of the ellipsoid?

If so, is there an angular amount that this section deviates from one of the planes of the ellipsoid? I mean, what is this amount? Do you imagine this is a constant across all "non-radially similar" ellipsoids (i.e. their radiuses are all different to each other? Different angles for each individual ellipsoid?

Regards,

Jonathan

Permalink Reply by Yoann Mescam (Systemiq) on November 9, 2011 at 5:22am

I dont think its needed to elaborate on this further, as Chris's simple solution makes Galapagos useless there.

Permalink Reply by Jonathan Chertok on November 9, 2011 at 5:40am

Yes. Very interesting.

Thanks for the look here.

I quite enjoyed following it.

Cheers.

Permalink Reply by Jonathan Chertok on November 8, 2011 at 5:06pm

Hi Sistemiq. First off a big thank you for taking this under consideration. It is this last class that I am interested in. However, I have to study some of the posts and some of the url's to make sure I am not mistaken about this.

But, I am pretty sure this is the class I am interested in:

> all radii different: there are 2 infinite sets (I think) of parallel circular cuts, finding the 2 planes of these families shouldnt require Galapagos. I may be totally wrong about this.

I suppose it is possible to specify one single angular amount that deviates from a transverse or longitudinal 'planar' (horizontal) or 'sectional' (vertical) section cut through the ellipsoid? But the question I am imagining is what is this angle and couldn't it be possible to arrive at it in galapagos? I guess you are saying that you believe the iterative nature of galapagos is not necessary and it can be done in GH?

- Jonathan

Permalink Reply by Yoann Mescam (Systemiq) on November 9, 2011 at 5:22am

See Chris's suggestion above.