how to vectorize a function?

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Xizeng Feng
Xizeng Feng 2021-6-29
回答： Xizeng Feng 2024-9-30
I ran the following and got some reply:
>> y=@(x)x^2;
>> fplot(y)
警告: 函数处理数组输入时行为异常。要改善性能，请将您的函数正确向量化，以返回大小和形状与输入参数相同的输出。
> In matlab.graphics.function.FunctionLine>getFunction
In matlab.graphics.function.FunctionLine/updateFunction
In matlab.graphics.function.FunctionLine/set.Function_I
In matlab.graphics.function.FunctionLine/set.Function
In matlab.graphics.function.FunctionLine
In fplot>singleFplot (line 237)
In fplot>@(f)singleFplot(cax,{f},limits,extraOpts,args) (line 192)
In fplot>vectorizeFplot (line 192)
In fplot (line 162)
>>
What is the problem?

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回答（2 个）

埃博拉酱
埃博拉酱 2024-9-28
^是矩阵幂运算，你这里需要的应该是元素幂运算.^
Xizeng Feng
Xizeng Feng 2024-9-30
thanks a lot!

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