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Hello, I am trying to do some edge detection using a kernel. I need to do this using standard SOPs/VOPs. http://setosa.io/ev/image-kernels/ I saw a tutorial from Entagma (https://vimeo.com/169437381) that basically does the operation by hand splitting out the vectors and multiplying them but it's quite tedious and you dont really know what vectors you're multiplying (QUESTION: is there an order in which pcfind returns the array of points eg. clockwise closest to furthest ?) Is there a better way (using actual matrices / knowing exactly which points) ? thanks!