A function works in MATLAB but shows an error in C#

Hello all,

I have a function which is working very well in MATALAB. But interestingly when I run it in C# I get this error:

Index exceeds matrix dimensions.

C# code:

using MathWorks.MATLAB.NET.Arrays;
using MathWorks.MATLAB.NET.Utility;
using A;

double[] Bx = new double[N];
double[,] PP = new double[N,N];
double[,] W = new double[N,N];

// Some calculation for Bx , PP & W 

MWNumericArray arr1 = PP;
MWNumericArray arr2 = Bx;
MWNumericArray arr3 = W;

ACLASS OBJ = new ACLASS();

MWArray RESULT = (MWNumericArray)OBJ.A((MWNumericArray)arr1, (MWNumericArray)arr2, (MWNumericArray)arr3,3, 2,1,1);

// Copy back the RESULT in PP
PP = (double[,])((MWNumericArray)RESULT).ToArray(MWArrayComponent.Real);

• What does happen in C# which disturbs matrix dimension ?
• Could it be because of difference arrays in C# start from 0 and in MATLAB start from 1 ?

Any help ?

Thanks

Answer 1

[Varun Bhaskar]

Hello,

Please follow the simple example of the 'magic square' code integration in the following link :

Integrate a .NET Assembly into your C# Application

Since you have already declared arr1, arr2, and arr3 you do not need to typecast again in the next line of code. Also, as you said C# array indices start from 0, so MWNumeric Array indices start from 0 to n-1, n being the size of the array.