Create closure example shown in /img

[FJGEODEV]

Hi, thanks for you work. Wondering how to create some closure images shown like in /img/closure1, closure2, etc..

I was trying to run example notebook but got this:

Number of HC Closures : 0 Closure voxel count: 0 - 0.00% Closure voxel count: (brine) 0 - 0.00% Closure voxel count: (oil) 0 - 0.00% Closure voxel count: (gas) 0 - 0.00%

Thanks.