dti (version 0.6-0)

show3d-methods: Methods for Function `show3d' in Package `dti'

Description

The function provides 3D visualization of "dtiTensor" and "dtiIndices" objects using the "rgl"-package. Functionality of the rgl-package allows to rotate and zoom the displayed object.

Usage

## S3 method for class 'dtiTensor':
show3d(obj, nx=NULL, ny=NULL, nz=NULL, center=NULL, method=1, level=0, scale=.25, bgcolor="black", add=FALSE, subdivide=2, smooth=TRUE, maxobjects=729, \dots)
  ## S3 method for class 'dtiIndices':
show3d(obj, index="FA", nx=NULL, ny=NULL, nz=NULL, center=NULL, method=1, level=0, bgcolor="black", add=FALSE, lwd=1, \dots)

Arguments

obj

An object of class dtiTensor or dtiIndices

nx

Number of voxel in x-direction

ny

Number of voxel in y-direction

nz

Number of slices

center

Vector of length 3 specifying the center of the data cube (class dtiTensor) or center of display (class dtiIndices)

method

method==1 and method==2 specify two different color schemes for directional FA-maps.

level

Minimal FA value of tensors.

scale

Scale factor for the size of ellipsoids

bgcolor

Backgroundcolor for rgl-display

add

If true information is added to the current device, otherwise a new device is opened.

subdivide

Level of subdivisions for meshing of ellipsoids, see package rgl.

smooth

Use smooted surfaces, see package rgl.

maxobjects

Maximal size of data cube (in voxel) to display

index

Eiter "FA" for fractional anisotropy index or "GA" for geodesic anisotropy index.

lwd

Line width to use.

...

Additional parameters passed to function rgl.par from the rgl-package.

Value

• The function returns the number of the current rgl-device.

See Also

dtiIndices-methods, dti.smooth, dtiTensor, dtiIndices

Examples

demo(dti_art)