Raster math issue

[ChristopherStrother]

I have created two rasters with the identical cell size, rows, columns. When subtracting B from A, I am getting a negative value even though the Min value of A is larger than that of B. Any ideas?

[EricRice]

Example (Raster A - Raster B)

Raster A
Min 5
Max 10

Raster B
Min 1
Max 10

The Min value of A is larger than that of B, per your criteria.

Lets say at a given pixel location, Raster A is value of 6, and Raster B is value of 10. This would result in a value of -4. 

It doesn't matter what the minimum values are.  It matters what the values are at the pixel locations being subtracted.

Regards,
Eric

[ChristopherStrother]

Thanks, Eric...duh, that makes perfect sense.