c 与matlab混编,谈谈Matlab与C/C++或C#的互调用（混合编程）

记得当初一个师姐问我知不知道如何在Matlab里调用C++的程序，还真把我问住了。因为我以前就知道C++调用Matlab的方法，这方面网上资料一大堆。没想到现在自己突发奇想又遇到另外一个问题，Matlab如何调用C#开发的程序。

1、C/C++调用Matlab

这方面资料太多了，随便搜一下“Matlab C++ 混合编程”。

2、Matlab调用C/C++

3、C#调用Matlab

这个我的博客Matlab分类有。

4、Matlab调用C#

通常是两种方法：COM和非托管化

但是，事实上matlab call dll，这个dll本身就可以是.net开发的，Matlab提供了相关加载和转换的函数。这才是本文的亮点。

下面是matlab的相关命令介绍

http://www.mathworks.com/access/helpdesk/help/techdoc/ref/f16-35614.html#brxerx8-1

Matlab使用.net数据的例子

http://www.mathworks.com/access/helpdesk/help/techdoc/matlab_external/exampleindex.html

下面是展示一些简单的例子和过程。

SampleProperties Class.

using System;

namespace netdoc

{

class SampleProperties

{

// string property

private static string stringField = "The MathWorks";

public static string stringProp

{

get { return stringField; }

set { stringField = value; }

}

// read/write property

private double doubleField = 8.9;

public double doubleProp

{

get { return doubleField; }

set { doubleField = value; }

}

// read-only property

private double readField = 0;

public double readOnlyProp

{

get { return readField; }

}

// write-only property

private double writeField = 0;

public double writeOnlyProp

{

set { writeField = value; }

}

}

}

Create Object.

Load the assembly and create object obj

:

sampleInfo = NET.addAssembly('c:/work/NetSample.dll');

obj = netdoc.SampleProperties

MATLAB displays the object as follows:

obj =

netdoc.SampleProperties handle

Package: netdoc

Properties:

stringProp: [1x1 System.String]

doubleProp: 8.9000

readOnlyProp: 0

Methods, Events, Superclasses

MATLAB displays the stringProp

, doubleProp

, and readOnlyProp

properties, but not the writeOnlyProp

property. MATLAB also does not display properties defined with the private

keyword, such as stringField

and doubleField

.

View Property Values.

To view the value of stringProp

, type:

obj.stringProp

MATLAB displays:

ans =

The MathWorks

Use Property

Values.

To use the properties, type:

db1 = obj.doubleProp

db2 = obj.readOnlyProp

MATLAB displays:

db1 =

8.9000

db2 =

Modify Property

Values.

To modify the properties, type:

obj.doubleProp = 5;

obj.writeOnlyProp = 6;

obj

MATLAB displays (in part):

obj =

Properties:

stringProp: [1x1 System.String]

doubleProp: 5

readOnlyProp: 0

To modify the static property stringProp

, type:

NET.setStaticProperty('netdoc.SampleProperties.stringProp', ...

'This is a static property');

newVal = obj.stringProp

MATLAB displays:

newVal =

This is a static property

Using .NET Fields

Example

The SampleFields

class defines the following

fields:

·

publicField

·

protectedField

SampleFields Class.

using System;

namespace netdoc

{

class SampleFields

{

public Int32 publicField;

protected string protectedField;

}

}

Create Object.

Load the assembly and create object obj

:

NET.addAssembly('c:/work/NetSample.dll')

obj = netdoc.SampleFields;

Modify Field Values.

To set the value of the field publicField

, type:

myValue = 3;

obj.publicField = myValue

MATLAB displays:

obj =

netdoc.SampleFields handle

Package: netdoc

Properties:

publicField: 3

Methods, Events, Superclasses

The publicField

property is of type Int32

. When you set the value to myValue

, which is of MATLAB type double

, MATLAB automatically converts the value to the proper type, as described in Passing

Data to a .NET Object

. Type:

class(myValue)

class(obj.publicField)

MATLAB displays:

ans =

double

ans =

int32

Limitations

to Support of .NET Properties

You cannot pass a cell array to a

property, or view protected

properties in MATLAB.

Example — Passing Data To a .NET

Assembly将Matlab矩阵转变为.net数组

http://www.mathworks.com/access/helpdesk/help/techdoc/matlab_external/brxe1ww-1.html#brzmvt8-1

Example — Converting a Multidimensional

.NET Array 将.net数组转变为Matlab矩阵

http://www.mathworks.com/access/helpdesk/help/techdoc/matlab_external/brxe1ww-1.html#br1adia-1