How to vectorize this function?

2021 1 10
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更新时间：2021 1 10
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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!

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回答（1 个）

Alan Stevens
Alan Stevens 2021-1-10

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You need a ./ (i.e. dot /)
x3=@(phi) (R-((3-2.*sin(phi))./(1-0.5.*sin(phi)).*R)/4).*cos(phi)
^

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MrBanana
MrBanana 2021-1-10
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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MrBanana
MrBanana
2021-1-10

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MrBanana
MrBanana
2021-1-10

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