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Envi_get_slice error (subscript range error) [message #74818]

Thu, 03 February 2011 09:27

milan thapa
Messages: 3
Registered: February 2011

Junior Member

Hello Everyone,

I am trying to loop through every pixel in the image to extract its
value. I have aimage of dimension 5035*5132.

I tried to use the envi_get_slice to extract the pixel values. Bu i
get the error that says

Subscript range values of the form low:high must be >= 0, < size, with
low <= high:
<FLOAT Array[5035]>.

My command is:

for i=0, (NumCols - 1) do begin
;print, i
for j=0, (NumRows - 1) do begin
; print, j
y_val=envi_get_slice(fid=fid1,line=j, xs=i, xe=i)

I have just started using IDL. So I maybe doing somthing very stupid.

Any help is much appreciated

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