Here is the next tutorial in the filters series by Niko Kiirala, This tutorial covers the composite filter.
“Composite is, as the name states, an effect that can composite images together. It uses the Porter-Duff blending modes named after the writers of the paper, where it was published.
The Porter-Duff blending modes are basically logical operations applied to images. For example, you can go and take an exclusive or of two images. In the original paper there was a table showing an example of each mode and some variation of that has been included in most places, where these modes are explained.”

how do you make the effin rabit
cool effect. thank you for sharing this. i really like this tutorial…very useful for me
The greatest oak was once a little nut who held its ground.
This tutorial is not a tutorial. It sucks incredibly bad. It describes a capability that Inkscape allegedly has, but does not explain how to do it — which any half decent tutorial should.
So, where the hell is this filter? What is it called, how to use it? I have wasted some 10 minutes trying to find it in the extensive list of filter under the “Filters” and “Extensions” menus (Inkscape 0.47, btw), and found nothing called “Composite”. The “tutorial” also did not explain what that window shown was and what it does. I finally figured that clicking “Filter editor” in the “Filters” menu gave that — but it’s all greyed out.
So, crappy tutorial, worse than nothing — because one wastes time reading it and trying to do it.
J, I have to agree with you that this either 1) is just a bad excuse for a tutorial or 2) it was poorly translated into English.
I’m just getting to know Inkscape and I’m in need of this compositing effect but I’ll just have to keep searching for more information. By the way, it seems clear that you do have to configure the composite effects in the Filter Editor and it will no longer be gray after you click New to start creating your first filter.