problem with anonymous function in executable

Question

Emre Kocatulum 2015-7-16

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/230145-problem-with-anonymous-function-in-executable

评论： Muthu Annamalai 2015-7-17

I have a three files that work perfectly. However when I compile them matlab behaves as if I didn't include one of the files even though it is included in the deployment.

    function testMain
    kuzu = zeros(5,1);
    anonymousFunction = testClass.anonymousFunction;
    kuzu2 = anonymousFunction(kuzu)
    end
    classdef testClass
        properties (Constant)
            anonymousFunction = @(x) replaceZeroWithNaN2(x)
        end
    end
    function output = replaceZeroWithNaN2(input)
    input(input==0) = NaN;
    output = input;
    end

All the files are in the same directory. After compilation I get the following error:

Undefined function 'replaceZeroWithNaN2' for input arguments of type 'double'

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Answer 1

Muthu Annamalai 2015-7-16

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/230145-problem-with-anonymous-function-in-executable#answer_186297

While I don't have a explanation of why you are seeing this error, I have a suggestion to rewrite your code.

Generally function handles are useful in context of algorithms | | , i.e. sort algorithm needs a comparator etc, integration algorithm needs a value of function at a point (x,y) etc.

For all other purposes I recommend using static methods : see examples of static methods .

Can you rewrite your code to make ' replaceZeroWithNaN2 ' a static method of class ' testClass ' and see what happens? I assume the codegenerator will have a easier time resolving that symbol.

Goodluck.