segment/open.c File Reference

Segment creation routine. More...

#include <unistd.h>
#include <fcntl.h>
#include <grass/gis.h>
#include <grass/glocale.h>
#include "local_proto.h"

Include dependency graph for segment/open.c:

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Functions
int	Segment_open (SEGMENT *SEG, char *fname, off_t nrows, off_t ncols, int srows, int scols, int len, int nseg)
	Initialize segment structure and open segment file. More...

Detailed Description

Segment creation routine.

This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details.

Author

GRASS GIS Development Team

Date

2018

Definition in file segment/open.c.

Function Documentation

Segment_open()

int Segment_open	(	SEGMENT *	SEG,
		char *	fname,
		off_t	nrows,
		off_t	ncols,
		int	srows,
		int	scols,
		int	len,
		int	nseg
	)

Initialize segment structure and open segment file.

Initializes the seg structure and prepares a temporary file. This fn is a wrapper for Segment_format() and Segment_init()

Note: The file with name fname will be created anew.

Parameters

[in,out]	SEG	segment
[in]	fname	file name
[in]	nrows	number of non-segmented rows
[in]	ncols	number of non-segmented columns
[in]	srows	segment rows
[in]	scols	segment columns
[in]	len	length of data type
[in]	nseg	number of segments to remain in memory

Returns

1 if successful

-1 if file name is invalid

-2 if file write error

-3 if illegal parameters are passed

-4 if file could not be re-opened

-5 if prepared file could not be read

-6 if out of memory

Definition at line 45 of file segment/open.c.