populating terrain through grasshopper

[Armada01]

Hey,

I've been watching the following video by Chaosgroup on Rhino with Vray for an architectural project. Very helpful!
https://www.youtube.com/watch?v=0uGEOtgaEug

I've downloaded the grasshopper instancer file to populate a terrain with trees, so I basically exchanged the flower files with some tree files. All worked well thus far.

Now I wanted to add some wild grass scrub and smaller plants, maybe some rocks. However they need to be populated at a higher density then the trees.

So extending the original instance with more inputs wouldn't work, since there's only one single control on the left of the instance to increase/decrease the number.

So, I assumed to just copy the instancer in the file. Make two terrain files (exact copies too) and then assign each terrain to one of the instancers as the base surface.

This doesn't seem to work however. It seems like the instancer only accepts a single surface, like as if the two surfaces in the parallel instancers are somehow linked to be one single file.

Anyone has an idea how to get these two instancers to be independent, allowing each input surface to be assigned to one terrain?

Or any other way of being able to populate different vrayscene files with different count numbers, even on a single terrain surface for that matter?

BTW, I'm completely illiterate when it comes to grasshopper.

[Armada01]

OK, I solved it. the problem was not with the input surface but with the output render. There were two render outputs while I guess only one can exist (seems logical).

So all the vrscene file outputs from the second (lower) group need to go into the upper "Render Scene".