How to vectorize this function?

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MrBanana
MrBanana on 10 Jan 2021
Commented: MrBanana on 10 Jan 2021
I have the following function:
x3=@(phi) (R-((3-2.*sin(phi))/(1-0.5.*sin(phi)).*R)/4).*cos(phi)
I read some articles saying I have to use elementwise operations but I still get a warning.
Thanks in advance!

Answers (1)

Alan Stevens
Alan Stevens on 10 Jan 2021
You need a ./ (i.e. dot /)
x3=@(phi) (R-((3-2.*sin(phi))./(1-0.5.*sin(phi)).*R)/4).*cos(phi)
^
  1 Comment
MrBanana
MrBanana on 10 Jan 2021
I tried this earlier but it didn't help either
Warning: Function behaves unexpectedly on array inputs. To improve performance, properly vectorize your function to return an output with the same size
and shape as the input arguments.
> In matlab.graphics.function.ParameterizedFunctionSurface>checkVectorization
In matlab.graphics.function.ParameterizedFunctionSurface.set.ZFunction
In matlab.graphics.function.ParameterizedFunctionSurface
In fsurf>singleFsurf (line 269)

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