I finally managed to subscribe with the pro license to the forum!
We have a little problem here at the office, which we are trying to solve with Forest pack, otherwise we will have to use grasshopper.
Basically it's a roof, where we are trying to scatter some skylights on it.
The grid between them need to be always the same, we are using the simple grid 1 for the moment, but we would like to change the density of them using a bitmap map.
Basically turn some of them "off".
The result which we are looking for is something similar to the attached image, where you will see that where is black we have a full density (4 objects) while moving down to lighter areas of the bitmap, we start "loosing" some of them.
Unfortunately we can't figure out how to do that, we tried area exclusion, but is changing the grid size.