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Creating MATLAB data structures in C# library to use in MATLAB

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Constantin
Constantin 2021 年 10 月 14 日
コメント済み: Constantin 2021 年 10 月 20 日
I am trying to interface a C# library to MATLAB. Using standard properties and methods works fine, however the performance is slow. I figured I'd try to use MWArray.dll to create MATLAB data structures directly in C# with an interface DLL which will be called by MATLAB.
However, whenever I call a method that uses MWArray, I get a type initializer error:
The type initializer for 'MathWorks.MATLAB.NET.Arrays.MWArray' threw an exception.
My C# class looks like this:
using MathWorks.MATLAB.NET.Arrays;
namespace Dummy.MatlabInterop
{
public class Example
{
public MWStructArray getStruct()
{
return new MWStructArray(new int[] { 1, 1 }, new string[] { "Dummy" });
}
}
}
This is called by MATLAB like this:
NET.addAssembly(fullfile(pwd, 'Dummy.MatlabInterop.dll'));
ex = Dummy.MatlabInterop.Example();
s = ex.getStruct(); % <- This throws 'The type initializer for 'MathWorks.MATLAB.NET.Arrays.MWArray' threw an exception.'
The dll is created for 64bit. I cannot find much documentation on this. Is this approach valid? What am I doing wrong? Any advice would be much appreciated.

採用された回答

Kojiro Saito
Kojiro Saito 2021 年 10 月 20 日
MathWorks.MATLAB.NET.Arrays is a part of MATLAB Compiler SDK and is different from MATLAB's external interface for .NET.
As NET.addAssembly document says, "NET.addAssembly does not support assemblies generated by the MATLAB Compiler SDK™ product.", so we cannot call the .NET libraries which use MathWorks.MATLAB.NET.Arrays.
  1 件のコメント
Constantin
Constantin 2021 年 10 月 20 日
Thank you for the reply. I will use a different approach.

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