which filter the function "imgradientxy" use ??

I use function "imgradientxy", but I need to know which filter it uses? and the difference between it and the function "imgradient"??

Answer 1

[Jan]

According to the documentation:

doc imgradientxy

the default method is: 'sobel' (default)

While imgradient calculates the gradient for each pixel with magnitude and direction, imgradientxy calculates the gradients in the fixed X and Y directions.