All posts for the month February, 2014

Dealing with transforms in AFNI (Part 1)

AFNI’s main tool for dealing with transforms is cat_matvec, but in many cases you may not need to use it!  Everyone knows that transform matrices are confusing — I’ll do a post later on just covering them — but for now, I think we can all agree that it’s a relief anytime you don’t have to […]

Creating ROIs in AFNI with Coordinates

In the past, I’ve posted on creating ROIs in AFNI and ways to manipulate those ROIs once created.  But something that comes up fairly often on the AFNI message boards is how to use 3dcalc to create different ROI shapes.  The most common that I’ve found are creating spheres and cubes, I’ve made some crazy […]