AnalyzeFMRI (version 1.1-11)

GaussSmoothKernel: Calculates a discrete Gaussian smoothing kernel.

Description

Calculates a simple, discrete Gaussian smoothing kernel of a specfic size given the covariance matrix of the Gaussian.

Usage

GaussSmoothKernel(voxdim=c(1, 1, 1), ksize=5, sigma=diag(3, 3))

Arguments

voxdim

Dimensions of each voxel.

ksize

Dimensions of the discrete kernel size.

sigma

The covariance matrix of the Gaussian kernel.

Value

• An array of dimension (ksize,ksize,ksize) containing the smoothing kernel.

Examples

a <- GaussSmoothKernel(voxdim=c(1,1,1), ksize=5, sigma=diag(1,3))