usage: gabor_movie width spatial_period phase orientation temporal_freq amplitude frame_rate duration
gabor_movie produces all the separate frames of a moving sine-wave grating. This is accomplished by invoking grating, gabor, and multimg. Frames are output as three-digit filenames with the extension ".bw". An explanation of parameters follows:
| PARAMETER | TYPE | UNITS | |
| width | integer | pixels | |
| spatial_period | float | pixels | |
| phase | float | degrees from mean grey at centre of image | |
| orientation | float | degrees from vertical | |
| temporal_freq | float | Hertz | |
| amplitude | float | -1..1 (negative values invert phase) | |
| frame_rate | float | Hertz | |
| duration | float | seconds |
To produce output in a format other than SGI's, set the environment variable VISTIM_PLUGIN to the name of a converter that takes the filename of an SGI image as its first parameter and creates an image whose name is its second parameter. An extension for this second image can be specified in the VISTIM_EXT environment variable. For example, to produce PICT images use setenv VISTIM_PLUGIN topict; setenv VISTIM_EXT pct.
Author: Matthew Belmonte