No output in intensity graph

[Varun95]

I am processing an audio signal of 115sec using Wigner Ville distribution. When I try to go for the spectrogram output using intensity graph it shows nothing but a blank screen. I have attached my blocs and output that I got. Kindly, suggest me some solution to rectify this problem. Thank you.

[GerdW]

Hi Varun,

which toolkit are you using for those "Wigner-Ville" functions?

using intensity graph it shows nothing but a blank screen.

Which is clearly wrong as you can see from that purple array in the intenxity graph!

Your graph is showing data of (about) 115×6000 samples, which seem to have a value of about zero.

What happens when you turn on autoscaling of the Z axis?

What happens when you display those samples in an ordinary 2D array indicator?

Which values are you plotting?