Image-based Sholl: Preview of shells is ill-rendered on images with non-zero origin

[tferr]

Details here: https://forum.image.sc/t/sholl-analysis-first-time/76191

[imagesc-bot]

This issue has been mentioned on Image.sc Forum. There might be relevant details there:

https://forum.image.sc/t/sholl-analysis-first-time/76191/2