Hoosgot

http://www.joachim-breitner.de/blog/archives/286-How-to-make-contour-lines-circles.html asks Hoosgot,

Dear lazyweb, I have a question with regard to image manipulation. Given an rectangle image with a continous function on it (in my case, walking distance from a certain point), I can easily draw the contour lines of the function, i.e. for a given distance from the center mark all points that have this distance. This looks very similar to the conto …

Visit the blog to lend your wisdom, or you can comment below.