c_coords21dindex

Convert physical coordinates to 1d indices into image array

Fast functions implemented in C++ via 'Rcpp' to support the
'NeuroAnatomy Toolbox' ('nat') ecosystem. These functions provide large
speed-ups for basic manipulation of neuronal skeletons over pure R
functions found in the 'nat' package. The expectation is that end
users will not use this package directly, but instead the 'nat'
package will automatically use routines from this package when it is
available to enable large performance gains.

Gregory Jefferis

natcpp

Fast C++ Primitives for the 'NeuroAnatomy Toolbox'

c_coords21dindex function

<dl><dt>xyz</dt>
<dd>Nx3 matrix or data.frame of physical coordinates</dd>
<dt>origin</dt>
<dd>Numeric: 3d coordinates of the origin</dd>
<dt>voxdims</dt>
<dd>Numeric: 3 numbers describing the voxel dimensions</dd>
<dt>dims</dt>
<dd>Integer dimensions of the 3d image array</dd>
<dt>clamp</dt>
<dd>Logical: whether or not to clamp values within the pixel
boundaries of the image.</dd></dl>

Arguments

Convert physical coordinates to 1d indices into image array — c_coords21dindex

<dl>

<dt>xyz</dt>
<dd>Nx3 matrix or data.frame of physical coordinates</dd>


<dt>origin</dt>
<dd>Numeric: 3d coordinates of the origin</dd>


<dt>voxdims</dt>
<dd>Numeric: 3 numbers describing the voxel dimensions</dd>


<dt>dims</dt>
<dd>Integer dimensions of the 3d image array</dd>


<dt>clamp</dt>
<dd>Logical: whether or not to clamp values within the pixel
boundaries of the image.</dd>

</dl>

c_coords21dindex: Convert physical coordinates to 1d indices into image array

Description

Usage

Value

Arguments