table of contents
LIPSIA     Display list of coordinates
vshowpts
The program 'vshowpts' helps to visualize locations given as a list of coordinates. The coordinates are presented as spheres with a user-specified radius, and output in the format of a 'zmap'. It can be visualized using 'vlview','vlv','vlrender'.
Example:

vshowpts -in pts.txt -system talairach -out pmap.v

vlview -in mr024_t1_pl.v -zmap pmap.v

The coordinates may be given as mm coordinates, Talairach or MNI coordinates. Each line specifies one point and has the following format:

x y z id radius

Example:

10 20 35 1 2
10 23 24 1 2
18 33 17 2 3

This line produces two spheres of radius 2 and id '1', and one of radius 3 with id '2'. The 'id' can be used to attribute different colors to the points. Point with identical id's will have the same color. Thus, if visualized using 'vlv','vlview','vlrender', the first two spheres will have the same color, the third will have a different color depending on the color map. The color map can be chosen interactively using 'vlview','vlv','vlrender'.

The dimension of the output image (its matrix size) can be specified using the parameters '-nslices', '-nrows', '-ncolumns'. If set to '0', a default value is used.

Parameters of 'vshowpts':
-help
Prints usage information.
-in
ASCII file containing list of coordinates. Required.
-out
Output file. Default: (none)
-system [ mm | talairach | mni ]
Type of coordinate system. Default: talairach.
-resolution
voxel size in mm. Default: 1
-nslices
number of slices in output image. Default: 0
-nrows
number of rows in output image. Default: 0
-ncolumns
number of columns in output image. Default: 0


Max Planck Institute for Human Cognitive and Brain Sciences. Further Information: lipsia@cbs.mpg.de
Copyright © 2007 Max Planck Institute for Human Cognitive and Brain Sciences. All rights reserved.