rwSPIDER.cpp File Reference

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

#include "utilities.h"
#include "file_util.h"
#include "rwSPIDER.h"

Functions
View	view_from_spider_euler (SPIDERhead *header)
int	spider_euler_from_view (SPIDERhead *header, View view)
int	readSPIDER (Bimage *p, int readdata, int img_select)
	Reading a SPIDER image file format. More...
int	writeSPIDER (Bimage *p)
	Writing a SPIDER image file format. A 3D image format used in electron microscopy. More...

Variables
int	verbose
char *	month []

Detailed Description

Functions for reading and writing SPIDER files.

Author

Bernard Heymann

Date

Created: 19990410

Modified: 20120321

Function Documentation

readSPIDER()

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

Reading a SPIDER 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 multi-image format used in electron microscopy. Header size: 1024 bytes (not same as data offset!). Data offset: sizeof(float)*x_size*ceil(1024/x_size) File format extensions: .spi The identifier is a 4-byte machine stamp: 1 Big-endian IEEE 17 17 00 00 2 VAX 34 65 00 00 3 Cray - 4 Little-endian IEEE 68 65 00 00 5 Convex 85 17 00 00 6 Fijitsu VP - (Note: not always implemented - so unreliable) Byte order determination: File type and third dimension values must be less than 256*256. Data type: only float. Transform type: Hermitian The x-dimension contains the x-size of the full transform A multi-image file has a global header followed by a header and data for each sub-image.

spider_euler_from_view()

int spider_euler_from_view	(	SPIDERhead *	header,
		View	view
	)

view_from_spider_euler()

View view_from_spider_euler

(

SPIDERhead *

header

)

writeSPIDER()

int writeSPIDER

(

Bimage *

p

)

Writing a SPIDER image file format. A 3D image format used in electron microscopy.

Parameters

*p	the image structure.

Returns

int error code (<0 means failure).

Variable Documentation

month

char* month[]

extern

verbose

int verbose

extern