Walking circle_perimeter

[Dan Farmer]

Hi Guys,

I'm trying to subsample the points returned by circle_perimeter and I'm 
having trouble. Since the points are calculated in octants (and reflected?) 
it makes walking it somewhat confusing (see below) Does anyone know off 
hand how I could walk this thing clockwise for example (or produce a 
sensible subsample of e.g., every other point or every 4th point, etc).

To be a little more concrete:

from skimage.draw import circle_perimeter

rr, cc = circle_perimeter(12, 12, 10)
im = zeros((40,40))
im[rr[::4],cc[::4]] = 1
imshow(im, cmap=cm.gray)
# returns one quadrant of the circle

Still Googling, but I'd appreciate any help =)

Thanks,
Dan
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/scikit-image/attachments/20130528/e26d49fa/attachment.html>