PixelMath process don't works

[jbmerillot]

Hello from France,

I subscribe to a training session in some days, and I had to test the PixelMath process.

Whatever I do (even if I leave the fields blank), I got this message. Any idea?

Thanks.

[niteman1946]

Try using the blue square instead of the blue circle.

[jbmerillot]

It works!

Thanks.

[oldwexi]

Hi JB!
The error message says clearly:
,,,because some of it s  Parameter depend on a particular   target Image .

You have selected "Replace target Image" this does not cooperate with the blue ball
as there is no target Image in global mode..

So if you execute with the triangle there is a target Image
If you execute with the blue square the actual (blue bar) Image will be used as target image.
The blue circle does not work with "Replace target Image"

Blue circle works nicely with "Create new Image" and the associated parameter.

Gerald