iclass_bands.c File Reference

Imagery library - functions for wx.iclass. More...

#include <grass/imagery.h>
#include <grass/raster.h>
#include "iclass_local_proto.h"

Include dependency graph for iclass_bands.c:

Go to the source code of this file.

Functions
void	open_band_files (struct Ref *refer, CELL ***band_buffer, int **band_fd)
	Open and allocate space for the group band files. More...
void	close_band_files (struct Ref *refer, CELL **band_buffer, int *band_fd)
	Close and free space for the group band files. More...
void	read_band_row (CELL **band_buffer, int *band_fd, int nbands, int row)
	Read one row of each band. More...

Detailed Description

Imagery library - functions for wx.iclass.

Computation based on training areas for supervised classification. Based on i.class module (GRASS 6).

Reading bands cell category values.

Copyright (C) 1999-2007, 2011 by the GRASS Development Team

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

Author

David Satnik, Central Washington University (original author)

Markus Neteler <neteler itc.it> (i.class module)

Bernhard Reiter <bernhard intevation.de> (i.class module)

Brad Douglas <rez touchofmadness.com>(i.class module)

Glynn Clements <glynn gclements.plus.com> (i.class module)

Hamish Bowman <hamish_b yahoo.com> (i.class module)

Jan-Oliver Wagner <jan intevation.de> (i.class module)

Anna Kratochvilova <kratochanna gmail.com> (rewriting for wx.iclass)

Vaclav Petras <wenzeslaus gmail.com> (rewriting for wx.iclass)

Definition in file iclass_bands.c.

Function Documentation

close_band_files()

void close_band_files	(	struct Ref *	refer,
		CELL **	band_buffer,
		int *	band_fd
	)

Close and free space for the group band files.

Parameters

refer	pointer to band files structure
band_buffer	buffer to read one row of each band
band_fd	band files descriptors

Definition at line 67 of file iclass_bands.c.

References G_debug(), G_free(), Ref::nfiles, and Rast_close().

Referenced by I_iclass_analysis(), and I_iclass_create_raster().

open_band_files()

void open_band_files	(	struct Ref *	refer,
		CELL ***	band_buffer,
		int **	band_fd
	)

Open and allocate space for the group band files.

Parameters

	refer	pointer to band files structure
[out]	band_buffer	buffer to read one row of each band
[out]	band_fd	band files descriptors

Definition at line 39 of file iclass_bands.c.

References Ref::file, G_debug(), G_malloc, Ref_Files::mapset, name, Ref_Files::name, Ref::nfiles, Rast_allocate_c_buf(), and Rast_open_old().

Referenced by I_iclass_analysis(), and I_iclass_create_raster().

read_band_row()

void read_band_row	(	CELL **	band_buffer,
		int *	band_fd,
		int	nbands,
		int	row
	)

Read one row of each band.

Parameters

band_buffer	buffer to read one row of each band
band_fd	band files descriptors
nbands	number of band files
row	data row

Definition at line 91 of file iclass_bands.c.

References G_debug(), and Rast_get_c_row_nomask().