polarLabels

Modified version of standard POLAR plot function to allow for rotation of plot labels (not the plot itself). Also allows for redefinition of the radius labels to allow for data containing negative values not having negative radii (as is often the case with dB in acoustics). Originally created for directivity plots but is useful for other tasks. Allows for semi-circle polar plotting, custom radial grid steps, and custom radial label angle.
Returns handles to text labels and grids for latter modifications.
Tested with MatLab version R12, R14, and 2017a.
Reverse compatible with old POLAR syntax.