write.ANALYZE: I/O Functions

In neuroconductor/fmri: Analysis of fMRI Experiments

Description

Write a 4 dimensional datacube in ANALYZE file format.

Usage

write.ANALYZE(ttt, header=NULL, filename)

Arguments

ttt	4 dimensional datacube
header	header information
filename	file name

Details

Writes the datacube ttt to a file named file in ANLYZE file format. header is a list that contains the header information as documented by the Mayo Foundation. We give here a short summary. If a value is not provided, it will be tried to fill it with reasonable defaults, but do not expect fine results, if the entry has a special important meaning (h.i. pixdim).

[1]	datatype1 -- 10 byte character	[2]	dbname -- 18 byte character
[3]	extents -- integer	[4]	sessionerror -- integer
[5]	regular -- character	[6]	hkey -- character
[7]	dimension -- 8 integers, dimensions ...	[8]	unused -- 7 integers
[9]	datatype -- integer, datatype usually "4"	[10]	bitpix -- integer
[11]	dimun0 -- integer	[12]	pixdim -- 8 floats, voxel dimensions ...
[13]	voxoffset -- float	[14]	funused -- 3 floats
[15]	calmax -- float	[16]	calmin -- float
[17]	compressed -- float	[18]	verified -- float
[19]	glmax -- integer	[20]	glmin -- integer
[21]	describ -- 80 byte character	[22]	auxfile -- 24 byte character
[23]	orient -- character	[24]	originator -- 5 integers
[25]	generated -- 10 byte character	[26]	scannum -- 10 byte character
[27]	patientid -- 10 byte character	[28]	expdate -- 10 byte character
[29]	exptime -- 10 byte character	[30]	histun0 -- 3 byte character
[31]	views -- integer	[32]	voladded -- integer
[33]	startfield -- integer	[34]	fieldskip -- integer
[35]	omax -- integer	[36]	omin -- integer
[37]	smax -- integer	[38]	smin -- integer

See ANALYZE documentation for details.

Value

Nothing is returned.

Author(s)

Karsten Tabelow [e-mail]

References

Polzehl, J. and Tabelow, K. (2007) fmri: A Package for Analyzing fmri Data, R News, 7:13-17 .

See Also

read.ANALYZE, write.AFNI

Examples

## Example 1
write.ANALYZE(array(as.integer(65526*runif(10*10*10*20)),c(10,10,10,20)),
              file=file.path(tempdir(),"analyzefile"))

neuroconductor/fmri documentation built on May 20, 2021, 4:28 p.m.