trimangle Documentation

trimangle - Trim a cube to an angle.
This procedure trims an input image by an angular amount.  The user can
trim the image some angular amount, with the parameter TRIMANG, from a
given central point, parameters CLAT and CLON.   The image can be
trimmed relative to emission angle or incidence angle with parameters
EMA or INC or a trimming window can be using by setting the RLAT & RLON
values.  Because the input cube is in update mode to trim the back-
planes, the FROM parameter equals the TO parameter.

PROGRAMMER: K Teal Thompson, U.S.G.S., Flagstaff, AZ; 11 Feb 99.

Input cube name

NONE

Incidence angle boundary
only use values < 90.0

--

Emission angle boundary
only use values < 90.0

--

Amount to trim (degrees)

--

Latitude of center of trim
for TRIMANG

--

Longitude of center of trim
for TRIMANG

--

Longitude range

--

Latitude range

--

ADDITIONAL NOTES:

Parm	Description
FROM	Filename of input cube. The input cube can be in any map projection. There isn't a TO parameter because to get the backplanes processed, a special processing mode was used that requires the FROM and TO parameters to be the same.
INC	INC is used as an incidence angle boundary. For any pixel point of the input cube that is greater than INC it is set to NULL. This effects the limb of the planet in the cube. The value should not be set above 90 degrees.
EMA	EMA is used as an emission angle boundary. For any pixel point of the input cube that is greater than EMA it is set to NULL. This effects the limb of the planet in the cube. The value should not be set above 90 degrees.
CLAT	Latitude of center of trim when using TRIMANG parameter.
CLON	Longitude of center of trim when using TRIMANG parameter.
RLAT	User's requested latitude range for trimming. This is the only option used for trimming a mosaic that doesn't have the photometric angles in the backplanes.
RLON	User's requested longitude range for trimming. This is the only option used for trimming a mosaic that doesn't have the photometric angles in the backplanes.
TRIMANG	Amount to trim (degrees) in an angle from CLAT & CLON.