matfile_open

Arguments

filename

String: the path of the file. Must contain only ANSI character.

mode

String: file access type ("r" by default).

• "r": opens the file for reading.

• "w": creates an empty file or opens it for writing.

version

Scalar string: file version format ("5" by default).

• "5": Matlab 5 file.

• "7.3": Matlab 7.3 file.

fd

Real: file descriptor (-1 if opening failed).

Description

Opens a Matlab binary MAT-file for reading or writing data.

If mode is set to w, the content of filename will be reseted.

Examples

A = rand(10, 10);
B = sprand(100, 100, 0.1);
savematfile("test_matfile.mat", "A", "B", "-v6");
clear();
fd = matfile_open("test_matfile.mat");
matfile_listvar(fd)
matfile_close(fd);

//fd = matfile_open("test_matfile.mat", "w"); // Empty test_matfile.mat

//fd = matfile_open("test_matfile.mat", "w", "7.3"); // Empty test_matfile.mat as a Matlab 7.3 file

See also

• matfile_close — Closes a Matlab binary MAT-file.
• matfile_varreadnext — Reads next variable in a Matlab binary MAT-file.
• matfile_varwrite — Write a variable in a Matlab binary MAT-file.
• matfile_listvar — Lists variables of a Matlab binary MAT-file.

Bibliography

This function uses MATIO library ( http://sourceforge.net/projects/matio/ ).

History