How to set the parameters in GLCM_Texture

[m510429]

Hi, I want to extract texture features in MRI images using GLCM_Texture, and I wonder how to set the parameters in GLCM_Texture?  First one is the Enter the size of the step in the pixels(?) ,how many pixels should  be filled?; the second one is select the direction of the step(), there are selections of 0 degree, 90 degrees,180 degrees and 270 degrees, which degree should I choose?


Thank you!