Dear all,

I have an intensity image (TanDEM-X) that I want to multiply the intensity by sin of incidence angle and then apply 10 log 10 on it.

First of all, I multiplied the intensity by sin of incidence angle in bandmath and I got an image clearly but when I applied 10 log 10 on it, the image converted to NaN.

Any idea why this has happened?

First step in band math: Intensity * sin(43.417)

Second step in band math: 10*log 10 (Intensity * sin(43.417))