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Dear Idrisians,

I have detected an error in CROSSTAB in Idrisi for Windows v. 2
(I do not know if this error was present in previous versions).
The resulting image and crosstabulation table is wrong when
some of the images contain a value outside the "min. value"
"max. value" entries of the DOC file, even if this value is
flagged as the flag value.

For example, imagine an image containing 1 and 2 values and a
background of 255, that is documented in the "flag value" and
"flag def'n" sections of the DOC file:
   flag value  : 255
   flag def'n  : background
The DOC also states:
   min. value  : 1
   max. value  : 2

When this image is combined with some other image (for example
an image only containing 5 and 6 values, and no flag values),
the 255 values of the first image are considered as "2", but in
other tests they were considered as "1".

Hope this helps,

Xavier Pons
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