nifti.header-class: arf3DS4 "nifti.header" class

In arf3DS4: Activated Region Fitting, fMRI data analysis (3D).

Description

The arf3DS4 "nifti.header" class contains the header information of an ANALYZE/NIFTI functional volume.

Objects

Objects can be created by calls of the form new("nifti.header", ...).

Slots

sizeof_hdr:

<nifti> Size of the header file.

data_type:

<nifti> Type of data (representation).

db_name:

<nifti> db_name.

extents:

<nifti> extents

session_error:

<nifti> session error.

regular:

<nifti> regular

dim_info:

<nifti> MRI slice ordering.

dims:

<nifti> Data array dimensions.

intent_p1:

<nifti> 1st intent parameter.

intent_p2:

<nifti> 2nd intent parameter.

intent_p3:

<nifti> 3rd intent parameter.

intent_code:

<nifti> Intent code.

datatype:

<nifti> Data type.

bitpix:

<nifti> Number of bits per voxel.

slice_start:

<nifti> First slice index.

pixdim:

<nifti> Grid spacing (single voxel dimensions).

vox_offset:

<nifti> Offset in the .nii file.

scl_slope:

<nifti> Data scaling, slope.

scl_inter:

<nifti> Data scaling, offset.

slice_end:

<nifti> Last slice index.

slice_code:

<nifti> Slice timing order.

xyzt_units:

<nifti> Units of single voxel dimensions.

cal_max:

<nifti> Maximum display intensity.

cal_min:

<nifti> Minimum display intensity.

slice_duration:

<nifti> Time for one slice (TR).

toffset:

<nifti> Shift in time.

glmax:

<nifti> glmax.

glmin:

<nifti> glmin.

descrip:

<nifti> Description of file.

aux_file:

<nifti> An auxilliary filename.

qform_code:

<nifti> q_form code.

sform_code:

<nifti> s_form code.

quatern_b:

<nifti> quaternion b parameter.

quatern_c:

<nifti> quaternion c parameter.

quatern_d:

<nifti> quaternion d parameter.

qoffset_x:

<nifti> q offset x parameter.

qoffset_y:

<nifti> q offset y parameter.

qoffset_z:

<nifti> q offset z parameter.

srow_x:

<nifti> 1st row affine transformation.

srow_y:

<nifti> 2nd row affine transformation.

srow_z:

<nifti> 3rd row affine transformation.

intent_name:

<nifti> Meaning of data.

magic:

<nifti> nifti magicstring.

data.type:

<arf3DS4> Data type.

data.signed:

<arf3DS4> Signed data.

fullpath:

<arf3DS4> Full path of datafile.

filename:

<arf3DS4> Filename.

filetype:

<arf3DS4> Type of file.

extension:

<arf3DS4> File extension.

gzipped:

<arf3DS4> Is the file gzipped?

endian:

<arf3DS4> Endianness of file.

version:

Object of class "version" (see version)

Extends

Class "nifti.fileinfo", directly.

Methods

Standard arf3DS4 accessor and replacement functions can be used to access and replace slots.

access

.classname.slotname(object)

replace

.classname.slotname(object)<-

In this case classname is "nifti.header" and slotname is for example "dims". So to access the "dims" slot of an r-object "myniftiheader" (of class "nifti.header") type .nifti.header.dims(myfniftiheader).

Author(s)

Wouter D. Weeda - [e-mail]

References

See the Nifti homepage (http://nifti.nimh.nih.gov/) for more information on the nifti filetype.

See Also

fmri.data,nifti.fileinfo

Examples

showClass("nifti.header")

arf3DS4 documentation built on May 2, 2019, 8:19 a.m.