Is it greyscale? Does grey make it lese dense or do I have to manually weed out some black and sort of speckle it?

Yup, Greyscale. White = most dense, Black = nothing, shades of grey in between... Cheers, Diolma

Be sure your map is mapped to a large enough area of your scene for your Ecosystem objects to fit in, at the object density you want.

A common problem is for vegetation to overlap some of your mapped areas because you made those areas too small to hold the vegetation.

I did this myself on my first couple of Ecosystems, lol.

HTH

_ jc...'Art Head Start' e-book
.......'Art Head Start.com site Digital Art skills. Free lighting chapter, tutes, Vue models, tex pix.

..and don't forget to make the texture "Object Standard", not "World Standard", and to remove any underlying ground/water planes (unless you make them eco-system freindly or really do want the plants etc to die back as the approach the plane... Just a couple of things that have caught me out in the past.. Cheers, Diolma (I'm NOT going to go into ALL the things that have caught me out in the past - the list is far too long..)