Gray scale or bar cell renderer problem with NaN values

Hello, would it be possible to exclude the NaN values from the range calculation? (I guess the same should be done with infinities, but I am not sure about those.) It just makes the preview of data useless (black rectangle, or a small line for each value.) Maybe the NaN could be represented with red?

Thanks, gabor

Hi Gabor, 

Thanks for the report, i've logged this in our tracking system.