Hi, I was trying to measure the circularity as a function of circle radius using the underlying circle object from skimage.draw(). I got some strange results, and tried to outline the exercise as well as the confusing outcome in a notebook. Essentially, the circularity as a function of particle radius does not seem to converge to 1.0, and in addition, at very small radii, the circularity does not agree with what one would expect from the circularity of a pixel (ie rectangle). I was hoping that an expert could have a glance at the notebook and offer some feedback? Hoping that I made an obvious mistake or assertion somewhere. The notebook actually uses my "pyparty" library that I posted a while back for drawing and storing the descriptors; however, I verified that these are the same descriptors that one gets using skimage.labels() directly (this is not show in the notebook). Here's the static view: http://nbviewer.ipython.org/github/hugadams/pyparty/blob/master/examples/Not... Thanks.