This is a fairly basic question that may have been answered in another thread.

How exactly is ‘Length’ calculated per pixel using the Math TOP combine channels function?

This is a fairly basic question that may have been answered in another thread.

How exactly is ‘Length’ calculated per pixel using the Math TOP combine channels function?

The length of a 3d vector is calculated like this:

Another way of looking at it is measuring the distance between point 0,0,0 and some other point in space

So basically a distance formula bin that regard.

makes sense! thank you