Consider the following matrix in MATLAB:
01 02 03 04 05 06 07
08 09 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 32 33 34 35
36 37 38 39 40 41 42
43 44 45 46 47 48 49
I have to generate directional variograms for such 7 x 7 windows(moving) of an image. I will use nlfilter for the process but for developing the function to calculate variograms I am not able to decide how to select elements in the window. For example when I consider the central value 25, in EW direction I have to consider only 25, 26, 27 and 28; in NE direction I have to consider only 25, 19, 13 and 07 when the lag chosen is 1. Is there any standard command to do so?
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