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List:       vtkusers
Subject:    RE: [vtkusers] elp:How to get the gray value of a special point
From:       "JULIO DANIEL" <judagica () hotmail ! com>
Date:       2004-11-29 21:59:37
Message-ID: BAY12-F253E5078D286D155A47E28D9BD0 () phx ! gbl
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you may be use:
GetScalarPointer(i,j,k));,
you have to know the type of data ( float, short, int........)

example (for a reader of short data) you have  to use

short *Pixel;

Pixel = (short *)(reader->GetOutput()->GetScalarPointer(i,j,k));

i, j, and k are the image index

now we have a array of 3 components (R,G,B) or array of 1 component if you 
use a gray image.

to modifie you use.
Pixel[0]=value  modifie the R component or the gray value.


good Luck



Daniel

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