I just have a question on the conversion from Cartesian X,Y,Z to domain-centric cylindrical coordinates. I have a computed variable, an energy flux term, say F.
Currently, F is a function of x,y,z. Here, the x,y,and z are not lat-Lon values but are more like indices. For example, the grid has 480 grids in the X and Y direction with a spacing of 1km each. So I simply define X as 1000 to 480,000 in increments of 1000 (meters). Y and X are the same since the grid is uniform. I use actual Z values which are non-uniform.
What I’d like to do is to transform this variable, F into r,theta,z coordinates with reference to the domain center. What is the best way to do this in Matlab?