You get this error:
Error using ScatterWindRose (line 31)
Not enough input arguments
if you run ScatterWindRose by clicking the run button in the MATLAB Editor or hitting the F5 key, because both of these things run whatever function or script is open in the Editor with no inputs. (ScatterWindRose in particular expects at least 2 inputs, so you'd get the same error if you were to run it with fewer than 2 inputs.)
Give it at least 2 inputs:
subplot(1,2,1)
X = 180*randn(1,100);
Y = randn(1,100);
ScatterWindRose(X,Y)
(they don't have to be called X and Y - they don't have to be called anything)
subplot(1,2,2)
ScatterWindRose(180*randn(1,100),randn(1,100))
The other error:
Error: Function definitions are not permitted in this context.
may be happening because you modified ScatterWindRose, or it may come from some other file you are working on. I don't know, but you can take the ScatterWindRose.m attached here, because I just downloaded it from the File Exchange link you provided.
