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matOpen (C and Fortran) - Open MAT-file

C Syntax

#include "mat.h"
MATFile *matOpen(const char *filename, const char *mode);

mwPointer matOpen(filename, mode)
character*(*) filename, mode

filename

Name of file to open

mode

File opening mode. The following table lists valid values for mode.

`r`	Opens file for reading only; determines the current version of the MAT-file by inspecting the files and preserves the current version.
`u`	Opens file for update, both reading and writing. If the file does not exist, does not create a file (equivalent to the `r+` mode of `fopen`). Determines the current version of the MAT-file by inspecting the files and preserves the current version.
`w`	Opens file for writing only; deletes previous contents, if any.
`w4`	Creates a Level 4 MAT-file, compatible with MATLAB Versions 4 software and earlier.
`wL`	Opens file for writing character data using the default character set for your system. Use MATLAB Version 6 or 6.5 software to read the resulting MAT-file. If you do not use the `wL` mode switch, MATLAB writes character data to the MAT-file using Unicode^® character encoding by default.
`wz`	Opens file for writing compressed data.
`w7.3`	Creates a MAT-file in an HDF5-based format that can store objects that occupy more than 2 GB.

File handle, or NULL in C (0 in Fortran) if the open fails.

This routine opens a MAT-file for reading and writing.

See Writing Character Data in the External Interfaces documentation for more information on how MATLAB uses character encoding.

See the following examples in matlabroot/extern/examples/eng_mat.