matOpen (External Interfaces/API Reference)

Opens a MAT-file

Fortran Syntax

integer*4 function matOpen(filename, mode)
integer*4 mfp
character*(*) filename, mode

Arguments

filename
Name of file to open.

mode
File opening mode. Legal values for mode are:

Table 2-1:
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, but does not create the file if the file does not exist (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 MATLAB 4 MAT-file.

**Table 2-1:**
`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, but does not create the file if the file does not exist (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 MATLAB 4 MAT-file.

mfp
Pointer to MAT-file information.

Description

This routine allows you to open MAT-files for reading and writing.

matOpen opens the named file and returns a file handle, or 0 if the open fails.

Examples

See matdemo1.f and matdemo2.f in the eng_mat subdirectory of the examples directory for sample programs that illustrate how to use the MATLAB MAT-file routines in a Fortran program.

matGetVariableInfo matPutArray (Obsolete)