While these functions will never win an award (they are in some cases just a line or 2), I have found them very handy for calculations where matlab functions may require a few extra steps. These functions have served me well, in particular pol2rec and rec2pol.
rec2pol(complex number) converts a complex number eg. 1-i to magnitude, angle degrees form [0.7071 -45]
the opposite function:
pol2rec(magnitude, phase) converts a polar number eg. 1 angle -45 to a complex number..
pol2rec(0.7071,-45)=1-i (could use sqrt(2)/2) to be precise)
rad2deg(radians) converts radians to degrees.
deg2rad(degrees) converts degrees to radians.
Help file provides examples of these elementary functions
Scott Williams (2022). Complex numbers functions, Conversion of Radians to Degrees (https://www.mathworks.com/matlabcentral/fileexchange/50550-complex-numbers-functions-conversion-of-radians-to-degrees), MATLAB Central File Exchange. Retrieved .
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