Compiled code to use str2func to call an application (mlapp file) fails while the same code works in the MATLAB environment

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Richard 2023-2-7

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1908010-compiled-code-to-use-str2func-to-call-an-application-mlapp-file-fails-while-the-same-code-works-in

编辑： Jan 2023-2-7

采纳的回答： Jan

I use str2func to allow the same code to call different graphics applications. Code snippet below

graphicsApp= str2func([g, 'Plot']);

% app.hTemp = graphicsApp(app, app.tsurf, app.p,...

% app.nPlots.(g), app.userFilePath);

app.hTemp = HBCPlot(app, app.tsurf, app.p,...

app.nPlots.(g), app.userFilePath);

Both versions of code work in the MATLAB environment as expected, but the commented code never opens the graphics application, "HBCPlot", in the particular instance where g='HBC'. It's easy enough to work around this particular block of code, but I subsequently use the graphics handles elsewhere so I've got to get this to work. I've examined the handle of course, @HBCPlot, and given the code works in the native environment I'm at a loss.

I wrote a simple test case, code below:

Teststr2fcn(1);

name=['Test','str2fcn'];

hTeststr2fcn= str2func(name);

hTeststr2fcn(2);

When this code is compiled both instances of Teststr2fcn appear

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Answer 1

Jan 2023-2-7

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1908010-compiled-code-to-use-str2func-to-call-an-application-mlapp-file-fails-while-the-same-code-works-in#answer_1165555

编辑：Jan 2023-2-7

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A bold guess: Is HBCPlot() included in the compiled application? If its name is hidden, Matlab cannot guess, that it has to be included. I'm not sure if "I've examined the handle of course, @HBCPlot" means exactly this problem.

Maybe this is a cleaner solution:

switch g
    case 'HBC'
        PlotFcn = @HBCPlot;
    otherwise
        error('Unknown plot function');
end
app.hTemp = plotFcn(app, app.tsurf, app.p,...
                    app.nPlots.(g), app.userFilePath);