In order to move all these floating breps (at different heights) on the XY plane I tryied to extract their lowest Z coordinate and imput that number as a vector to move them down.
For each branch how can I keep only the lowest Z coordinate ?
You need to get the indices. Here I make them with series. Also, I use entwine and explode so we aren’t doing everything 3 times, because we have lists and we aren’t cavemen :D.