daisy Documentation

DAISY - Create a "flower petal" projection for globes
Create a series of 12 Transverse Mercator projections that are 32
degrees in longitude and 91 degrees in latitude to form a "flower petal"
projection for making globes.  If the northern hemisphere is being
created, the latitude range is -1 to +90.  If the southern hemisphere is
being created, the latitude range is -90 to 1.  The petals are formed by
changinging the center longitude and map rotation in steps of 30 degrees
for each Transvers Mercator projection.  Each section is put into the
mosaic and then deleted.  A final projection is made that is a Lambert
Azimuthal Equal-area that is centered on the pole and covers from -90 to
-75 or 75 to 90 degrees latitude and 360 degrees in longitude.  This is
the last cube that is placed in the mosaic.

The programs that are used are: NUPROJ, GEOM, MOSAIC and DAISPARM (a
special program that calculates parameters for DAISY).

PROGRAMMER: Debbie A. Cook

Input cube file name

NONE

Output cube file name

NONE

NORTH, SOUTH

NORTH

Size of output cube

8600

Starting point (1-13)

1

Directory for working files

--

Minimum number of valid pixels
in neighborhood
(for BILINEAR only)

4

ADDITIONAL NOTES:

Parm	Description
FROM	This MUST be a projection which includes 360 degrees of longitude and at least 91 degrees in latitude. (See POLE for the latitude ranges.)
TO	This will be either the northern or southern hemisphere of the planet in a "flower petal" projection. The cube will consist of a mosaic of 12 Transverse Mercator projections that have each been rotated a different amount so that they join at the pole and one Lambert Azimuthal Equal-area projection centered on the pole.
POLE	NORTH will produce an image from -1 to 90 degrees latitude. SOUTH will produce an image from 1 to -90 degrees latitude.
SIZE	The output cube will be square, so SIZE equals the number of lines or samples of the output cube. The default of 8600 is the largest image that can be put on 10x10 inch film with a raster size of 25 microns.
START	This procedure has the potential of being very time consuming. The user can restart in the middle of the procedure with this parameter. The range is from 1 to 13 since 12 petals are created and a final lambert azimuthal equal-area (number 13) is created and added to the mosaic.
WORK	"nuproj" creates a TFILE that will go to the working directory and "geom" creates two work files and a temporary output file that also go to the working directory. These files are deleted in the procedure after each new cube has been added to the mosaic.
MIN_VALS	This is the minimum number of valid pixel values required to generate a valid pixel value when using the bilinear interpolation. The default value of "1" will cause a valid pixel value to be output if any one of the four closest pixels in the input file that map to the output position are valid. A value of "4" will require that all four of the closest pixels in the input file that map to the output position be valid.