Adding legends for a plot in matlab function block.

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Charan
Charan 2024-1-18
移动：Fangjun Jiang 2024-1-23
i wanted to add a legend to the plot which is the output from matlab function block, but im ending up with an error as "Function 'legend' not supported for code generation." so can anyone help me out to add this legend function in matlab function block.
function [mean, stdev] = stats(vals)
len = length(vals);
mean = avg(vals,len);
stdev = sqrt(sum(((vals-avg(vals,len)).^2))/len);
plot(vals,"-+");
legend("Autoupdate","off")
end
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Adam Danz
Adam Danz 2024-1-22
Right after receiving this error, could you run the following 2 lines of code and share the content each line produces? Also, please let me now what MATLAB release you're using.
S = lasterror
S.stack
Fangjun Jiang
Fangjun Jiang 2024-1-22
The error is reported by Simulink during model compile. The code has not been able to be executed yet.

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回答（1 个）

Fangjun Jiang
Fangjun Jiang 2024-1-18
编辑：Fangjun Jiang 2024-1-18
There is a way to deal with this type of error.
https://www.mathworks.com/help/coder/ug/function-is-not-supported-for-code-generation.html
However, are you sure you want to do this? Because the MATLAB Function block in a Simulink model usually is executed at every simulation step.
This recent Q&A might give you a better idea.
https://www.mathworks.com/matlabcentral/answers/2069311-simulink-update-figure-in-matlab-function
  1 个评论
Charan
Charan 2024-1-23
移动：Fangjun Jiang 2024-1-23
thanks for the answer , i was able to solve the above error by passing the legend as an extrinsic function inside a matlab function block.
coder.extrinsic('legend')

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