Manpage of polargrid
Section: User Commands (1)
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polargrid - Regrid an image to a polar coordinate system
Sample an image in terms of a polar coordinate system and create
a new image where the x-axis is the azimuthal coordinate and the
y-axis is the radial coordinate. The radial coordinate can be
in either decimal or logarithmic units.
See also the REGRID program for more WCS based transformations.
Note this program assumes an astronomical image, and square pixels.
Input data cube.
Interpolated regridded output data cube.
Center of the polar coordinate system, in pixels where
(1,1) is the lower left point in a map.
By default the mapcenter will be taken.
Polar coordinate phase angle (degrees).
Starting, ending and step value in radial grid.
Optionally these three numbers can be followed by the
coordinate type (a string). Currently supported are 'linear',
The units of the radii are in the units of that
Example: -1,2,0.01,log is a logarithmic axis from 0.1" to 100"
By default the all pixels will fit in the output map, with a
linear grid and stepsize of 1 pixel.
Starting, ending and stepsize in polar angle, as measured from
the phase angle given earlier. If the starting angle is larger
than the ending angle, the coordinate system will be defined
with angle increasing in the clockwise sense rather than
in a counterclockwise sense. Angles are given in degrees.
** i believe the program does the reverse **
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Time: 18:35:38 GMT, July 05, 2011