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The following commands may be executed within the GEOTEST context
(activated with the SET/CONTEXT GEOTEST command).
- CREATE/RAMP
- produces square two--dimensional images of
user--specified dimensions, with mean flux per pixel of 100 units, of
user--specified slope of the plane, and with the plane itself sloping
at a position angle. The latter can vary between 0 and 90 degrees.
For large slopes, the flux assigned to some pixels will be negative
(--- this being dependent on the position angle).
- CREATE/WAVE
- produces an image with sinusoidal modulations
along the horizontal axis. Again, the image is two--dimensional, of
user--specified dimensions, and with user--specified amplitude and
period. The sin function is always evaluated at the center of the
pixel. The mean flux per period is 0 units.
Rein Warmels
Mon Jan 22 15:08:15 MET 1996