rwGRD.cpp File Reference

Functions for reading and writing GRD files. More...

#include "rwGRD.h"
#include "file_util.h"
#include "timer.h"
#include "utilities.h"

Functions
int	grid_decompress (Bimage *p, long len, unsigned char *buf)
unsigned char *	grid_compress (Bimage *p, long &compress)
int	readGRD (Bimage *p, int readdata, int img_select)
	Reading a Basel GRD map image file format. More...
int	writeGRD (Bimage *p, int flags)
	Writing a Basel GRD map image file format. More...

Variables
int	verbose

Detailed Description

Functions for reading and writing GRD files.

Author

Bernard Heymann

Date

Created: 19990410

Modified: 20221103

Function Documentation

grid_compress()

unsigned char * grid_compress	(	Bimage *	p,
		long &	compress
	)

grid_decompress()

int grid_decompress	(	Bimage *	p,
		long	len,
		unsigned char *	buf
	)

readGRD()

int readGRD	(	Bimage *	p,
		int	readdata,
		int	img_select
	)

Reading a Basel GRD map image file format.

Parameters

*p	the image structure.
readdata	flag to activate reading of image data.
img_select	image selection in multi-image file (-1 = all images).

Returns

int error code (<0 means failure). A 3D image format used in electron microscopy. Header size: 512 bytes (fixed). File format extensions: .grd The identifier is a 4-byte magic number (not used). Machine identifier: 1 = little endian, 2 = big endian. Byte order determination: Data type and third dimension values must be less than 256*256. Old data types: 1 = byte, 2 = float, 3 = complex float 4 = 3-value vector (float), 5 = view (float) 6 = RGB byte, 7 = RGB float 8 = RGBA byte, 9 = RGBA float 10 = multi The Bsoft data type and compound type are combined to give the mode: mode = 100*compound_type + data_type

writeGRD()

int writeGRD	(	Bimage *	p,
		int	flags
	)

Writing a Basel GRD map image file format.

Parameters

*p	the image structure.
flags	flags to set output properties.

Returns

int error code (<0 means failure). A 3D image format used in electron microscopy. flags: 0 no compression 1 rul-length compression (only byte data types)

Variable Documentation

verbose

int verbose

extern