MAP to DSK
Pathway to make a DSK. Convert MAP to OBJ using AltWG tools, then convert OBJ to DSK using SPICE tools.
Example using TRALHL.MAP, to get obj (note: make sure you use the --local)
Maplet2FITS TRALHL.MAP tmp.plt FITS2OBJ --local tmp.plt TRALHL.obj
Now turn OBJ into DSK (note: lbl file is listed below)
<rand> makeDSK$ /usr/local/toolkit/mice/exe/mkdsk MKDSK Program; Ver. 2.0.0, 28-FEB-2017; Toolkit Ver. N0066 SETUP FILE NAME> TRALHL-obj.lbl Reading plate model input file... ...Done reading plate model input file. Generating Spatial Index... Segregating and closing DSK file... DSK file was created. All done.
Example of LBL file. Refer to https://naif.jpl.nasa.gov/pub/naif/utilities/MacIntel_OSX_64bit/mkdsk.ug for more details.
<rand> makeDSK$ cat TRALHL-obj.lbl
\begindata
INPUT_SHAPE_FILE = 'TRALHL.obj'
OUTPUT_DSK_FILE = 'TRALHL.bds'
SURFACE_NAME = 'TRALHL Tethys' ### This can be user defined; see NAIF_SURFACE_NAME below
CENTER_NAME = 'TETHYS' ### Must be spice compatible name
REF_FRAME_NAME = 'IAU_TETHYS' ### Must be spice compatible frame
START_TIME = '1950-JAN-1/00:00:00'
STOP_TIME = '2050-JAN-1/00:00:00'
DATA_CLASS = 1 ### Data class 1 is for shapes with a single radii for each lat/lon
INPUT_DATA_UNITS = ( 'ANGLES = DEGREES'
'DISTANCES = KILOMETERS' )
COORDINATE_SYSTEM = 'LATITUDINAL' ### Haven't yet experimented with other systems
DATA_TYPE = 2 ### As of 22 Nov '21, all DATA TYPES are 2
PLATE_TYPE = 3 ### For an OBJ input use a Plate Type of 3
KERNELS_TO_LOAD = ( 'naif0012.tls' ) ### Not sure if this is needed
NAIF_SURFACE_NAME += 'TRALHL Tethys' ### Here is where you define user surface
NAIF_SURFACE_CODE += 1 ### The above SPICE link doesn't explain this code well; 1 seems to work
NAIF_SURFACE_BODY += 603 ### This is the SPICE code for Tethys
MINIMUM_LATITUDE = 11.715 ### I've played around changing the min/max lat/lon and it doesn't seem to matter much
MAXIMUM_LATITUDE = 29.104 ### At least it doesn't seem to change anything once converted back to an OBJ
MINIMUM_LONGITUDE = 102.452
MAXIMUM_LONGITUDE = 122.322
\begintext
ICQ to DSK
Pathway to make a DSK. Convert ICQ to OBJ using AltWG tools, then convert OBJ to DSK using SPICE tools.
Example using Tethys.txt, to get obj
ICQ2PLT Tethys.txt tmp.plt PLT2OBJ tmp.plt Tethys.obj
To get OBJ to DSK, use the same technique above, except the min/max lat/lon should be -90 to 90 and -180 to 180.
DSK to OBJ
-dsk gives the input dsk, -text gives the output file, -format vertex-facet determines the output format to be in an obj
/usr/local/toolkit/mice/exe/dskexp -dsk TRALHL.bds -text TRALHL_fromDSK.obj -format vertex-facet
Note: To read the obj generated by dskexp in Meshlab, first trim the spaces in front of the "v"'s and "f"'s of the output file.
The SPICE commands DSKBRIEF and COMMNT may also be useful to check the dsk generated.