[chimera-dev] Finding central Axis of Strand

[Devin Haslam]

Hello,

I am developing my own extension to find the central axis of a strand. I am
using the nitrogen atoms of a strand to estimate this line, but I have not
been able to estimate the end of the strand so that it follows the ribbon.
I have attached an image below that displays this error. Currently I am
using the next nitrogen atom on the loop to extend my line, but I was
wondering how Chimera does this with the ribbon. As you can see in the
image, one end of the strand is very accurate, but the side with the arrow
head has some problems. Thanks for your help.
-- 
Devin Haslam
Old Dominion University, Norfolk, Virginia
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