Error in passing parameter for MATLAB function From .net

Question

Sathiyaseelan 2011-6-28

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/10404-error-in-passing-parameter-for-matlab-function-from-net

Dear all, I was trying to communicate MATLAB with .Net.

I created X and Y variables and Testing values are x=[1,2,3,4,5] and Y=[5,10,15,20,25] and created the model(amx) using Identification Tool. Then saved as .MAT file. The problem is, when I am passing values from C#.net If MATLAB function is like this working fine,

function [out]= test(path, X, Y,pos) load(path); d=iddata(X,Y,1); y1=predict(amx,d); a=y1.y(pos); out =a;

Running Command in MATLAB is,

Test(‘C:\Test\\Tables.mat’,[11;12;13;14;15],[55;60;65;70;75];3)

ans= 15

But answer was based on our created X and Y values, it won’t to consider passing values. So I made change in MATLAB function as,

function [out]= test(path,inputX,outputY,pos) load(path); d=iddata(outputY,inputX,1); y1=predict(amx,d); a=y1.y(pos); out =a;

Now I am facing Error like,

“MWMCR::EvaluateFunction error: Error using ==> idmodel.predict at 111 Mismatch in input/output numbers for model and data.Error in =>passmodel.m at 4.”

C# code is, TABS.TABS_CLASS obj = new TABS.TABS_CLASS();

double[] input = new double[5] { 11, 12, 13, 14, 15 }; double[] output = new double[5] { 55, 60, 65, 70, 75 }; double pos = 2;

     MWNumericArray InputX = (MWNumericArray)input;
            MWNumericArray OutputY = (MWNumericArray)output;

MWNumericArray mwchar = null; mwchar = (MWNumericArray)obj.test(@"C:\5TAB\5TABS.mat",InputX, OutputY, (MWNumericArray)pos);

Thanks

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Answer 1

Rajiv Singh 2011-7-12

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https://ww2.mathworks.cn/matlabcentral/answers/10404-error-in-passing-parameter-for-matlab-function-from-net#answer_15545

Hi Sathiyaseelan, Do you still have a question?

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Sathiyaseelan 2011-7-13

hello,

yup., I want to know about Model Predictive Control(MPC). Actually i am a .net application developer just i want to communicate MPC with .net application. I already done MATLAB Identification Tool with .net but now i can run in MPC in MATLAB but not able to run in .net. It showing error in using predictive keyword.

Rajiv Singh 2011-7-14

You should create a separate thread for your MPC question. Also post more details on your task - what you did, errors you saw and help you need.

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Answer 2

Sathiyaseelan 2011-7-4

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/10404-error-in-passing-parameter-for-matlab-function-from-net#answer_14862

if we change MATLAB code as, function [out]= test(path, X, Y,pos) load(path); d=iddata(X(:),Y(:),1); y1=predict(amx,d); a=y1.y(pos); out =a; its working fine.