Mat_VarRead (3) Linux Manual Page
Mat_VarRead – Reads the information and data for a specific variable in a MATLAB MAT file.
Synopsis
Fd #include <matio.h> Ft matvar_t * Fo Mat_VarRead Fa mat_t *mat Fa const char *name FcDescription
The Fn Mat_VarRead function reads the information and data for the variable Fa name in the open MAT file.Return Values
If the variable was found in the MAT file and successfully read, a pointer to the MATLAB variable structure is returned. If the variable was not found, or there was an error reading the variable, NULL is returned.Examples
This example program opens a MAT file named by the first argument to the program, and reads a variable named x from the file. The MATIO function Mat_VarPrint is used to print the information and data from the file.#include "matio.h"
int
main(int argc,char **argv)
{
mat_t *matfp;
matvar_t *matvar;
matfp = Mat_Open(argv[1],MAT_ACC_RDONLY);
if ( NULL == matfp ) {
fprintf(stderr,"Error opening MAT file %s,argv[1]);
return EXIT_FAILURE;
}
matvar = Mat_VarRead(matfp,"x");
if ( NULL != matvar ) {
Mat_VarPrint(matvar);
Mat_VarFree(matvar);
}
Mat_Close(matfp);
return EXIT_SUCCESS;
}