tran Documentation

tran - Project image in a map projection to Transverse Mercator
This procedure projects an image in a map projection to a Transverse
Mercator keeping the same latitude and longitude boundaries as the
input image if MTMQUAD="no".  If MTMQUAD="yes" the input scale (DEG)
is checked to see if it is equal to 1024.0 pix/deg.  If this is true
the output boundaries are trimmed by 0.4 deg from all sides to
conform to the standard Mars 1:500k MTM quadrangle format.
Otherwise, the output boundaries are left the same.

Two programs are run in this procedure:

NUPROJ - creates a transformation table file (TFILE.dat) in the
  default WORK directory
GEOM - makes the transformation of the image.  The procedure deletes
  the TFILE and work files after GEOM is done.
See specific programs for more help.
Programmer:  Ella Mae Lee, U.S.G.S., Flagstaff, AZ

Input cube file name
  (Default extension is .cub)

NONE

Output cube file name
  (Default extension is .cub)

NONE

Is this a Mars 1:500k quadrangle
(yes or no)

no

Output map resolution (km/pix)

--

Output map resolution (pix/deg)

--

Center longitude of projection

NONE

Disk drive for work files
  default (current directory)

--

ADDITIONAL NOTES:

Parm	Description
FROM	Name of the image that is to be projected. The input image must be in a map projection.
TO	Output filename of the Transverse Mercator projected image. The output image will have the same latitude and longitude range as the input if DEG is not equal to 1024.0 pix/deg. If DEG=1024.0 then the output file will be trimmed by 0.4 degree from all sides to conform with the standard MTM quadrange format of Mars 1:500k mapping project.
MTMQUAD	Is this a Mars 1:500k high resolution quadrangle, if "yes" the output will be trimmed by 0.4 degree on all sides to conform to the standard MTM quadrangle format only if DEG=1024.0 pix/deg. Otherwise, the output boundaries will remain the same. ("yes" or "no")
KM	Output map resolution (km/pix)
DEG	Output map resolution (pix/deg)
CLON	The center longitude defines the center of the projection, not necessarily the center of your input or output image. It is a parameter defined by the user of the final product. If working with images which will be computer mosaicked, then the center longitude for all those images should be the same. The valid range is from -360 degrees to 360 degrees.
WORK	GEOM needs work space for two files to transform the image, one file is approximately the size of the input image and the other is aproximately the size of the output image. This option allows the work files to be sent to a different disk. default (current directory)