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Man Pages


Manual Reference Pages  -  MAT_VARGETSTRUCTS (3)

NAME

Mat_VarGetStructs - Index a structure variable using slices of each dimension

CONTENTS

Synopsis
Description
Return Values
See Also

SYNOPSIS


.Fd #include <matio.h> matvar_t *
.Fo Mat_VarGetStructs const matvar_t *matvar int *start int *stride int *edge int copy_fields
.Fc

DESCRIPTION

The Mat_VarGetStructs function selects a subarray from a structure array matvar. Each of the elements in the subarray contains all of the fields of the structure. The index of each dimension starts at the start element in the array (0 being the first element), and reads every stride values (1 being every element, 2 every other element, etc.). The total number of elements in the subarray is specified as edge. The copy_fields option specifies whether the fields of the original structure are copied for the new subarray. If set to 0, the returned structure array’s fields have the same pointer as the original array, and the data field of the subarray structure. The subarray is marked with the conserve memory flag indicating that the fields should not be free’d. They are free’d when the original structure is free’d.

RETURN VALUES

A subarray of the original structure array, or NULL if there is an error.

SEE ALSO

Mat_VarGetStructsLinear(3),
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