C中使用MATLAB的mat文件

最新推荐文章于 2023-10-22 13:45:15 发布

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#matlab #c #file #include #null #api

本文介绍了如何在C语言环境中访问和操作MATLAB的mat数据文件。首先需要将MAT.h包含路径添加到Visual Studio的Include目录，然后通过matOpen、matClose、matGetVariable等API函数进行文件的打开、关闭以及数据的读取。

C中访问Matlab数据文件Mat的方式：

mat数据格式是matlab的数据存储的标准格式。

(1)首先将Mat.h所在的includes文件夹加到Vs2005的include配置中：

Tools-Options-Projects and Solutions-VC++ Directories

在show derectories for:中选择includes file

将Matlab安装目录下的extern/include添加到其中。

(2)#include<mat.h>

(3)常见函数：

matopen 打开mat文件
matclose 关闭mat文件
magetfp 取得mat文件的c语言句柄
matGetArray 取得一个数组

/*
* Open a MAT-file "filename" using mode "mode". Return
* a pointer to a MATFile for use with other MAT API functions.
*
* Current valid entries for "mode" are
* "r"    == read only.
* "w"    == write only (deletes any existing file with name <filename>).
* "w4"   == as "w", but create a MATLAB 4.0 MAT-file.
* "w7.3" == as "w", but create a MATLAB 7.3 MAT-file.
* "u"    == update. Read and write allowed, existing file is not deleted.
*
* Return NULL if an error occurs.
*/
EXTERN_C MATFile * matOpen(const char *filename, const char * mode);

/*
* Close a MAT-file opened with matOpen.
*
* Return zero for success, EOF on error.
*/
EXTERN_C int matClose(MATFile *pMF);

/*
* Write array value with the specified name to the MAT-file, deleting any
* previously existing variable with that name in the MAT-file.
*
* Return zero for success, nonzero for error.
*/
EXTERN_C int matPutVariable(
           MATFile * pMF,
           const char * name,
           const mxArray * pA
           );

/*
* Read the array value for the specified variable name from a MAT-file.
*
* Return NULL if an error occurs.
*/
EXTERN_C mxArray * matGetVariable(MATFile * pMF, const char * name);