I am new to Jitter and I would be really grateful for any help...

All the questions are about Jitter matrix:

1. Is it possible to do any math operations on a specific column or row without having to deal with every single cell?

2. Is it possible to swap specific rows or columns? For instance to swap row 3 with row 49?

3. I made a patch (just for practice) that colors the screen by moving a slider. Since it is a monochrome "animation" I thought there would be no problems with the speed. The graphical response is really slow. What am I doing wrong?

handling-with-specific-rows-or-columns-in-jitter-matrix

Those uzi's are working very hard, connect one to print and you'll see what mayhem is going on. Have a look at the help file for [jit.fill] and you should be able to do what you want.

If you haven't already, then also have a look at jit.op for maths operations and jit.submatrix for siphoning off a section of a matrix, you could then stick the matrix back together with jit.glue.

Handling with specific rows or columns in Jitter matrix?