When I try to run plotActual​AndExpecte​dResultsWi​thRMSE function in matlab, it shows me 'unrecognized function or variable ' error.

Hello everyone,

I'm trouble with that command 'plotActualAndExpectedResultsWithRMSE'. That command gives me error as follows;

Unrecognized function or variable 'plotActualAndExpectedResultsWithRMSE'.

How can figure out this problem. Important for me and my thesis not progressing because of that problem. I thought it might be related to my matlab version but altought I try other versions result still same. I use R2020b and I tried 2021b-2019a-2019b. Please take a look.

The subject i am working on "Tune Mamdani Fuzzy Inference System". Link here;

https://ch.mathworks.com/help/fuzzy/tune-mamdani-fuzzy-inference-system.html

How can I calculate while that error is still there the RMSE between the generated output data and the validation output data set.

Answer 1

[Boris CHEN]

Hi,this is Local Functions in

https://www.mathworks.com/help/fuzzy/predict-chaotic-time-series-using-type-2-fis.html

maybe can help you to slove this problem~

function [rmse,actY] = calculateRMSE(fis,x,y)

% Specify options for FIS evaluation

evalOptions = evalfisOptions("EmptyOutputFuzzySetMessage","none", ...

"NoRuleFiredMessage","none","OutOfRangeInputValueMessage","none");

% Evaluate FIS

actY = evalfis(fis,x,evalOptions);

% Calculate RMSE

del = actY - y;

rmse = sqrt(mean(del.^2));

end

function plotActualAndExpectedResultsWithRMSE(fis,vldX,vldY)

[rmse,actY] = calculateRMSE(fis,vldX,vldY);

figure

plot([actY vldY])

axis([0 length(vldY) min(vldY)-0.01 max(vldY)+0.13])

xlabel('sample index')

ylabel('signal value')

title(['RMSE = ' num2str(rmse)])

legend(["Actual output" "Expected output"],'Location',"northeast")

end

[Cris LaPierre]

See an explanation here: https://www.mathworks.com/help/matlab/matlab_prog/create-functions-in-files.html