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nifti_image Struct Reference

High level data structure for open nifti datasets in the nifti1_io API. Note that this structure is not part of the nifti1 format definition; it is used to implement one API for reading/writing formats in the nifti1 format. More...

#include <nifti1_io.h>

List of all members.

Public Attributes
int	ndim
int	nx
int	ny
int	nz
int	nt
int	nu
int	nv
int	nw
int	dim [8]
size_t	nvox
int	nbyper
int	datatype
float	dx
float	dy
float	dz
float	dt
float	du
float	dv
float	dw
float	pixdim [8]
float	scl_slope
float	scl_inter
float	cal_min
float	cal_max
int	qform_code
int	sform_code
int	freq_dim
int	phase_dim
int	slice_dim
int	slice_code
int	slice_start
int	slice_end
float	slice_duration
float	quatern_b
float	quatern_c
float	quatern_d
float	qoffset_x
float	qoffset_y
float	qoffset_z
float	qfac
mat44	qto_xyz
mat44	qto_ijk
mat44	sto_xyz
mat44	sto_ijk
float	toffset
int	xyz_units
int	time_units
int	nifti_type
int	intent_code
float	intent_p1
float	intent_p2
float	intent_p3
char	intent_name [16]
char	descrip [80]
char	aux_file [24]
char*	fname
char*	iname
int	iname_offset
int	swapsize
int	byteorder
void*	data
int	num_ext
nifti1_extension*	ext_list
analyze_75_orient_code	analyze75_orient

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Detailed Description

High level data structure for open nifti datasets in the nifti1_io API. Note that this structure is not part of the nifti1 format definition; it is used to implement one API for reading/writing formats in the nifti1 format.

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Member Data Documentation

analyze_75_orient_code nifti_image::analyze75_orient

for old analyze files, orient

char nifti_image::aux_file[24]

auxiliary filename

int nifti_image::byteorder

byte order on disk (MSB_ or LSB_FIRST)

float nifti_image::cal_max

calibration parameter, maximum

float nifti_image::cal_min

calibration parameter, minimum

void * nifti_image::data

pointer to data: nbyper*nvox bytes

int nifti_image::datatype

type of data in voxels: DT_* code

char nifti_image::descrip[80]

optional text to describe dataset

int nifti_image::dim[8]

dim[0]=ndim, dim[1]=nx, etc.

float nifti_image::dt

grid spacings

float nifti_image::du

grid spacings

float nifti_image::dv

grid spacings

float nifti_image::dw

grid spacings

float nifti_image::dx

grid spacings

float nifti_image::dy

grid spacings

float nifti_image::dz

grid spacings

nifti1_extension * nifti_image::ext_list

array of extension structs (with data)

char * nifti_image::fname

header filename (.hdr or .nii)

int nifti_image::freq_dim

indexes (1,2,3, or 0) for MRI

char * nifti_image::iname

image filename (.img or .nii)

int nifti_image::iname_offset

offset into iname where data starts

int nifti_image::intent_code

statistic type (or something)

char nifti_image::intent_name[16]

optional description of intent data

float nifti_image::intent_p1

intent parameters

float nifti_image::intent_p2

intent parameters

float nifti_image::intent_p3

intent parameters

int nifti_image::nbyper

bytes per voxel, matches datatype

int nifti_image::ndim

last dimension greater than 1 (1..7)

int nifti_image::nifti_type

0==ANALYZE, 1==NIFTI-1 (1 file), 2==NIFTI-1 (2 files), 3==NIFTI-ASCII (1 file)

int nifti_image::nt

dimensions of grid array

int nifti_image::nu

dimensions of grid array

int nifti_image::num_ext

number of extensions in ext_list

int nifti_image::nv

dimensions of grid array

size_t nifti_image::nvox

number of voxels = nx*ny*nz*...*nw

int nifti_image::nw

dimensions of grid array

int nifti_image::nx

dimensions of grid array

int nifti_image::ny

dimensions of grid array

int nifti_image::nz

dimensions of grid array

int nifti_image::phase_dim

directions in dim[]/pixdim[]

float nifti_image::pixdim[8]

pixdim[1]=dx, etc.

float nifti_image::qfac

quaternion transform parameters [when writing a dataset, these are used for qform, NOT qto_xyz]

int nifti_image::qform_code

codes for (x,y,z) space meaning

float nifti_image::qoffset_x

quaternion transform parameters [when writing a dataset, these are used for qform, NOT qto_xyz]

float nifti_image::qoffset_y

quaternion transform parameters [when writing a dataset, these are used for qform, NOT qto_xyz]

float nifti_image::qoffset_z

quaternion transform parameters [when writing a dataset, these are used for qform, NOT qto_xyz]

mat44 nifti_image::qto_ijk

qform: transform (x,y,z) to (i,j,k)

mat44 nifti_image::qto_xyz

qform: transform (i,j,k) to (x,y,z)

float nifti_image::quatern_b

quaternion transform parameters [when writing a dataset, these are used for qform, NOT qto_xyz]

float nifti_image::quatern_c

quaternion transform parameters [when writing a dataset, these are used for qform, NOT qto_xyz]

float nifti_image::quatern_d

quaternion transform parameters [when writing a dataset, these are used for qform, NOT qto_xyz]

float nifti_image::scl_inter

scaling parameter - intercept

float nifti_image::scl_slope

scaling parameter - slope

int nifti_image::sform_code

codes for (x,y,z) space meaning

int nifti_image::slice_code

code for slice timing pattern

int nifti_image::slice_dim

directions in dim[]/pixdim[]

float nifti_image::slice_duration

time between individual slices

int nifti_image::slice_end

index for end of slices

int nifti_image::slice_start

index for start of slices

mat44 nifti_image::sto_ijk

sform: transform (x,y,z) to (i,j,k)

mat44 nifti_image::sto_xyz

sform: transform (i,j,k) to (x,y,z)

int nifti_image::swapsize

swap unit in image data (might be 0)

int nifti_image::time_units

dt units: NIFTI_UNITS_* code

float nifti_image::toffset

time coordinate offset

int nifti_image::xyz_units

dx,dy,dz units: NIFTI_UNITS_* code

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The documentation for this struct was generated from the following file:

• nifti1_io.h

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