Plotting with opacity is giving no plots.

[pranaysingh25]

Hi,

I was trying to plot a vtkimage data, there's lot of noise(dark pixels) around the object's boundary, so I was trying to use the plotting API's add_mesh method's 'opacity' argument.
But as soon as I assign any opacity to it, for example linear, geom, etc. Nothing gets plotted.
I have tried to understand the API and get what opacity does from the documentation. But getting no clue why nothing's getting plotted as soon as I put opacity argument. While plotting without opacity argument atleast plots something (my object with lot of noise around it that's why I wanted to add opacity) but there's no plot with opacity argument.

Kindly help me out to understand what am I doing wrong.

Thanks,
Pranay.