analyzeheader.for.data: Create ANALYZE 7.5 header suitable for given data.

In freesurferformats: Read and Write 'FreeSurfer' Neuroimaging File Formats

Create ANALYZE 7.5 header suitable for given data.

Description

Create ANALYZE 7.5 header suitable for given data.

Usage

analyzeheader.for.data(analyzedata, ...)

Arguments

analyzedata	array of numeric (integer or double) data, can have up to 7 dimensions.
...	extra parameters passed on to analyzeheader.template, ignored in this function.

Value

an ANALYZE 7.5 header (see analyzeheader.template) in which the datatype, bitpix, dim, cal_min and cal_max fields have been set to values suitable for the given data. Feel free to change the other fields, e.g. the voxel sizes in pix_dim or the orient code.

Note

ANALYZE 7.5 has much fewer data types than NIFTI: integers are stored as 32 bit signed integers and floating point data as 32 bit floats, which is what this function selects (the same choice that ni1header.for.data makes for NIFTI v1). To store 16 bit integers, which is the classic ANALYZE data type, set datatype to 4L and bitpix to 16L in the returned header after calling this function.

Examples

analyzeheader <- analyzeheader.for.data(array(1:24, dim = c(4, 3, 2)))
analyzeheader$datatype

freesurferformats documentation built on Sept. 25, 2026, 1:07 a.m.