MATLAB Application Program Interface
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Opens a MAT-file

C Syntax

Arguments

filename
  Name of file to open.

mfp
  Pointer to MAT-file information.

mode
  File opening mode.

Description

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

matOpen opens the named file and returns a file handle, or NULL if the open fails. Legal values for mode are:

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, rather than the default MATLAB 5 MAT-file.

Example

See matcreat.c and matdgns.c in the eng_mat subdirectory of the examples directory for sample programs that illustrate how to use the MATLAB MAT-file routines in a C program.



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