Overview

Archiving SPC-focus products. There are two major categories (global and regional) with two subdivisions (topography and backplanes -- aka other data). The regional products are derived from bigmaps.

Tools

These tools are stored in GitHub as archivingTools.


Grid to GeoTIF

var=radius.ll
new=big3
argR="-R280/287/-9/-3"
argR="-R0/360/-90/90"
argI="-I0.04"

date
echo "Blockmean"
gmt blockmean $var $argR $argI  > out

echo "sphereinterpolate"
cat out |  gmt sphinterpolate $argR $argI -Gtest.nc


echo "gdal translate"
gdal_translate -of GTiff -b 1 -a_srs support/60300.prj  NETCDF:test.nc $new.tif

Note: gdal_translate doesn't define everything that is needed because the test.nc projection is not defined. Use the following instead. Below is an example for the Moon (Luna), where several important objectives are accomplished.

  1. The generated GeoTIFF is ready for ingestion into a PDS archive because it will use BandSequential format, and it will generate an example xml label which will have many hard-to-determine details like the header byte offset and the data type (i.e. LSB vs MSB).

  2. Trent Hare at USGS (personal communication on 02 Mar 2022) says in the planetary community usually uses square pixels, even though GeoTIFFs can handle rectangular pixels. Note that with the projections definitions (point 3.) the units of -tr will be meters. So -tr 1 1 will be 1 meter square vertices.
  3. gdalwarp defines the projection of the source file (i.e. -s_srs) and output/target file (i.e. -t_srs). I sent Trent Hare the first 10 lines of the input file to GMT and the tmp.nc and on 09 Mar 2022 he determined the source projection is a Cartographic system in degrees, so we can use 30100.prj. The example for 30110.prj is an Equidistant Cylindrical projection.

gdalwarp -of PDS4 -co IMAGE_FORMAT=GEOTIFF -r bilinear -tr $metPx $metPx -s_srs support/30100.prj  -t_srs support/30110.prj  NETCDF:tmp.nc ${bigmap}-${type}-v${ver}.xml


Also note that you can check the details of a GeoTIFF with gdalinfo and gdalsrsinfo.

Global

Global ICQ resolution to bin sizes [degrees]

ICQ Q Value

Vertices

Bin Size [deg]

512

1,579,014

0.041

256

396,294

0.164

128

99,846

0.649

64

25,350

2.556

32

6,534

9.917

Topography

Commands developed while talking with Trent Hare 22 Aug 2022.

GMT pads with half a pixel, so for a product with 1 deg bins, need to trim 0.5 deg. 0.3 deg bins would trim 0.15 deg. Example below is for a product for Phoebe with 1 deg bins where the output from covertLatLon is radius128.ll

var=radius128.ll
argR=-R0.5/359.5/-89.5/89.5 # trim per above; gives a warning when there are more than two decimal places, but the end product is still good. 
argI=-I1.0 # 1 deg bins

gmt blockmean $var $argR $argI  > out # This step may not be needed, but keep for now
cat out |  gmt sphinterpolate $argR $argI -GtestRadius128Trim.nc

Make a cube with Long from 0 to 360. Phoebe is 106.5 km in radius. Circumference divided by 2 gives the distance in meters from center to western/eastern end. Circumference divided by 4 gives distance in meters from equator to pole. -a_ullr is upper left pixel in -long lat and lower right pixel in lon -lat. BOUNDING_DEGREES is what is put in the label (remember that GMT pads by half a pixel, so we are not generating data when there is none). May need to contact Trent Hare to get the correct prj file

gdal_translate -of ISIS3 -co TARGET_NAME=Phoebe -co FORCE_360=True -a_srs support/60915FromTrent.prj -a_ullr -334579.61760731 167289.808803656 334579.61760731 -167289.808803656 -co BOUNDING_DEGREES=0,-90,360,90 NETCDF:testRadius128Trim.nc out_testRadius128Trim.cub

The above command should have GDAL write the label correctly, but apparently there is a bug in the code. My version is more recent than Trent's version, so it shouldn't be a version problem. So now we use ISIS to make a correct ISIS label.

First set up the MAP parameters. Note that for 0 to 360 clon=180, this is because ISIS isn't using clon (it's a misnomer), but is really setting x=0. -180 to 180 would use clon=0. Resolution is pixels/deg, so for 0.3 deg bins you would enter 3.3333 here.

maptemplate map=smp180.map projection=simplecylindrical clon=180 targopt=user targetname=Phoebe eqradius=106500 polradius=106500 resopt=ppd resolution=1

The below will overwrite the given file. Note this is mapping a single pixel (sample and line are always 0.5, 0.5 since that refers to the top left corner of the top left pixel, and maps to lat 90 lon 0.)

maplab from=out_testRadius128Trim.cub map=smp180.map sample=0.5 line=0.5 coordinates=latlon lat=90 lon=0

The above gives a working cube, now to turn it into a geotiff. We use gdal_translate again. To make the label a bit cleaner, could use -tr 1858.77565 1858.77565 (which comes from gdalinfo on the cube and truncating the Pixel Size).

gdal_translate -of PDS4 -co IMAGE_FORMAT=geotiff out_testRadius128Trim.cub out.lbl

Follow up with using vi to edit the <cart:pixel_scale_x unit="pixel/deg">0.999999999999978906</cart:pixel_scale_x> value to be 1 so the label looks nicer.

Sigmas

After you have the cube, change values of "-1" (which represent 1 or 0 maplets) to "9999"

fx f1=phoebe_sigma_tmp.cub to=phoebe_sigma_c.cub equation="(9999-f1)*(f1<0) + f1" // Use GUI for this since command line will fail

Number of Images

Best Image Resolution

Best Maplet Resolution

Slope

Albedo


Regional

Run backplanesGMT (which is in ORExSPCsupport) (or backplanesISIS)

Topography

Output:

 Version:   1.50000000    
 Input map name (only 6 char no MAPFILES and .MAP)
 BIGMAP position
     V   120.38036346435547       -510.48150634765625       -54.750602722167969     
     Ux  -2.9186813160777092E-002  0.12163921445608139      -0.99214518070220947     
     Uy  0.97239929437637329       0.23332308232784271        0.0000000000000000     
     Uz  0.23149037361145020      -0.96476125717163086      -0.12509183585643768     
     QSZ          99
 Lon   279.612366       286.917664    
 Lat  -9.55961323      -2.35706925    

<Deprecated> We are currently not using blockmean and sphinterpolate, but this section is maintained as another set of procedures.

We'll need the Lon and Lat range for "argR", and QSZ will give an idea of what you need for "argI".

Now you need some math to convert the Lon range number of nodes (i.e. "argI") to deg/px. (286.917664 - 279.612366) / 199 = 0.03671

If you don't want to make it readable by ISIS, and don't care about square pixels, you can run the following

See above in "Grid to GeoTIF" for details, but a better program to use is gdalwarp so you can properly define the projection. Plus this allows the pixel size to be defined in meters, which is cleaner. The example below if for the Moon (Luna)

gdalwarp -of PDS4 -co IMAGE_FORMAT=GEOTIFF -r bilinear -tr $metPx $metPx -s_srs support/30100.prj  -t_srs support/30110.prj  NETCDF:tmp.nc ${bigmap}-${type}-v${ver}.xml

How to trim size

</Deprecated> End section on blockmean and sphinterpolate

Current procedures for generating Geotiff

JRW has a shell script that will make these products, and their PDS label. It is found in /usr/local/spc/bin/makeGeoTiffBigNneighbor.sh. The shell script isn't needed, but can make the process easier.

Make a config.txt file for the shell script that looks something like this...

<rand> INGV02$ cat config.txt 
BIGMAP=INGV02
ARGR=-R161.625107/161.997177/-35.9918938/-35.6902657
ARGI=-I1821+n
METPX=5
PROJECT=30110
BODY=Moon
RUNALL=No
VERSION=1

METPX is the GSD in meters for the bigmap. Project 30110 is for Equidistant_Cylindrical on the Moon. Project 30118 is North_Pole_Stereographic if you ever make a North Polar region.

gmt nearneighbor $var -Gtmp.nc $argI $argR -S0.001d -N16+m8


# Make normal GeoTiff
echo "gdal warp"
gdalwarp -of PDS4 -dstnodata -3.40282306073709653e+38 -co IMAGE_FORMAT=GEOTIFF -r bilinear -tr $metPx $metPx -s_srs support/30100.prj  -t_srs support/$proj.prj  NETCDF:tmp.nc ${bigmap}-${type}-v${ver}.xml

#Make GeoTiff readable by ISIS
gdalwarp -of ISIS3 -dstnodata -3.40282306073709653e+38 -tr $metPx $metPx -r bilinear -co TARGET_NAME=$body -co DATA_LOCATION=GEOTIFF -s_srs support/30100.prj  -t_srs support/$proj.prj NETCDF:tmp.nc ${bigmap}-${type}-ISIS-v${ver}.lbl

gmt nearneighbor only writes out a value if data points exist in the specific sectors, then makes an average of the nearest values in those sectors. -S.001d is the search radius of each sector (in the example it is .001 degrees) and -N16+m8 means there are 16 sectors and there must be values in 8 of those sectors to write out a value.

Project 30100 is the data in degrees. Note that if you've previous run ISIS by using "conda activate isis" in the window you are using, then gdalwarp will throw a project error. This is true even if you've run "conda deactivate", so best to just start with a fresh window.

The "-dstnodata" option in gdalwarp is to use a small number for "no data" instead of NaN. NaN is not compatible with PDS4.

prj files can be found here

IMPORTANT: After you've make the geoTiff and it's label, the label is still not ready to go because there will be placeholder values. To fix those, use a script Trent Hare sent JRW on 27 June 2022, which works for LRO data. PDS4_replaceStrings.py into the folder (note it will change ALL xml files in the directory and ALL subdirectories) and run it with "python PDS4_replaceStrings.py". The python file for LRO products can be found here

How to create bigmap products and labels for ISIS cubes

Make the cubes using backplanesISIS and ascii2isis. Now make the cubes Band sequential, which is something ascii2isis v4.1.1 cannot do, despite the ISIS manual saying it can. Instead use cubeatt. Also need to write the files out with a specific filename structure. This filename structure will be used by the shell scripts to make csv files readable by OLAF.

This will be done for the topography, latitude, longitude, and photocube products. I give an example of the conversion for the photocubes below.

bigmap=KAR543
dir=/Users/JW/Dropbox/PDS_LDAP16/products/isis/Karpinskiy/orig/$bigmap


while read img ; do
cubeatt from=img-${img}/IoverF-${bigmap}.cub to=${dir}/${bigmap}_${img}_IoverF.cub+BandSequential
cubeatt from=img-${img}/rawP-$bigmap.cub to=${dir}/${bigmap}_${img}_a.cub+BandSequential
cubeatt from=img-${img}/$bigmap-localI.cub to=${dir}/${bigmap}_${img}_i.cub+BandSequential
cubeatt from=img-${img}/$bigmap-localE.cub to=${dir}/${bigmap}_${img}_e.cub+BandSequential
done < lastFourList_$bigmap

Next is to make the label. We use a shell script to generate a csv file, and then upload the cube and csv file into OLAF. To use the shell script, create a config.txt that looks similar to this...

<rand> KAR543$ cat config.txt 
OBJECT=Moon
BIGMAP=KAR543
AUTHLIST="Weirich, J.R."
OBSSYSBOOK="LROC"
TARGETNAME="Moon"
TARGETTYPE=Satellite
STARTTIME="N/A"
STOPTIME="N/A"
REFKEY="N/A"
VER=v1
SAMPLES=1015
LINES=1015
VERTPXSCALE=5
HOZPXSCALE=5
WEST=167.284134
EAST=167.880630
SOUTH=73.4460144
NORTH=73.6149368
SPHNAME=Moon_2000
AAXIS=1737400
BAXIS=1737400
CAXIS=1737400
LOCALDESC="This file is simple in a local reference frame and thus not in a map projection.  Within cart:local_georeference_information 
we provide the needed vectors such that a transformation could be applied to this file."
GEOINFO=""Vector" is the radius vector that extends from the center of the object to the middle vertex of the DTM. It is in Cartesian space with the first number being in the direction of x, the second number the direction of y, and the third number the direction of z. 0 West Longitude defines the positive x-axis, while north pole is the positive z-axis. 270 West Longitude defines the positive y-axis.
The plane of the DTM is determined by the local slope. This plane of the DTM is defined by two horizontal unit vectors (i.e. Ux and Uy) and a vertical unit vector (i.e. Uz). Each of these unit vectors are defined in the same Cartesian space as the radius vector, where again the first number is in the direction of x, the second number the direction of y, and the third number the direction of z.
 # Vector   -480.19241333007812        105.74529266357422        1663.2192382812500
 # Ux  -0.94595688581466675       0.21812622249126434      -0.23997193574905396
 # Uy  -0.22469174861907959      -0.97442990541458130        0.0000000000000000
 # Uz  -0.23383583128452301        5.3919713944196701E-002  0.97077983617782593
"

Vector and Ux, Uy, and Uz come from dumpMapHeaders.

Next is the run shell scripts. For the topography, lat, and lon cubes, you'll use productInfoOLAF-isis-unprojected-topocubes.sh with a command variable giving the directory location of config.txt. For the photometric cubes use productInfoOLAF-isis-unprojected-photocubes.sh with command variables of the directory location and a file with the name of all the images.

Once you have the cube in PDS format and a csv file, upload these to OLAF. Use the "2-D Array Images" Product, and upload everything.

Slope

* See topography

Albedo

* See topography

Sigmas

Number of Images

* Continue with topography script

Best Image Resolution

* Continue with topography script

Photometric Data (Also works for I/F)

This includes emission angle, incidence angle and phase angle. It also works for I/F on the output from rawMOSAIC.

Run phasei (located in ORExSPCsupport)

Run process similar to Number of Images (i.e. use "bustGrid" and "paste")

Uploading Products to OLAF

Uploading Global Cubes to OLAF

To start, make sure you've converted the cubes to BandSequential. Use the USGS ISIS program cubeatt (i.e. cube attributes). Search this page for "BandSequential" or "cubeatt" for instructions.

After that you'll need to make the "product_info.csv" for these cubes. You'll use productInfoOLAF-isis-global.sh along with a config.txt file. Note that all the values in this example are for a Q=512 ICQ, while the assessment products (albedo, best map, maxres, numimg, sigma) are all 1 degree bins. Config.txt looks something like this...

OBJECT="Saturn IX (Phoebe)"
OUTNAME=Phoebe
OUTID=_c
AUTHLIST="Weirich, J.R."
OBSSYSBOOK="ISIS-WAC; ISIS-NAC"
TARGETNAME="Phoebe"
TARGETTYPE=Satellite
STARTTIME="N/A"
STOPTIME="N/A"
REFKEY="N/A"
VER=v1
SAMPLES=2222                       # This will stay the same for all Q=512 models
LINES=1111                         # This will stay the same for all Q=512 models
VERTPXSCALE=300                    # This will be different for each body, to calculate use SQRT(4*Pi*Radius^2/1579014) where Radius is in meters.
HOZPXSCALE=300                     # Same as for VERTPXSCALE

Choose "2D Array Image", and the follow the instructions.

Running GMT on the PSI Hawk Cluster

To begin making projected geoTiffs for ArcGIS and ISIS, start with the txt files generated when making the photometric cubes. The scripts used produce the following txt files:

The above files need to be uploaded to the Hawk cluster, while keeping their parent directory structure.

Go to the photocube directory for each bigmap

rsync -hapvP --exclude=*.cub --exclude=*.prt N1* jweirich@hawk.psi.edu:/home/jweirich/Tethys/geoTiffTethys/LEADHL/

Also copy the output from backplanesGMT and config.txt

Ex. config.txt

BIGMAP=LEADHL
ARGR=-R226.209259/261.399750/3.66536975/33.9945526
ARGI=-I801+n
DEGPX=0.0378641483770287
PROJECT=60300
BODY=Tethys
RUNALL=No
VERSION=1

The basic command being run is similar to the Topography step above:

echo "Blockmean"
gmt blockmean $var $argR $argI  > ${product}out
echo "sphereinterpolate"
cat ${product}out |  gmt sphinterpolate $argR $argI -G${product}.nc

... where $product is going to be IoverF, a, e, or i. Everything else is just a wrapper to deconflict all the files since we're running in parallel.

I have the GMT commands above in a script called makeaGeoBig.sh which reads most of the inputs from config.txt. makeGeoBig.sh is called by makeIoverFGeoBig.sh, makePhaseGeoBig.sh, makeEmissGeoBig.sh, and makeIncGeoBig.sh

The key lines in these scripts are: (Ex. below is for Incidence)

echo "getting ready for GMT ..."
~/bin/bustGrid $bigmap-i.TXT > bustedi-$bigmap-$img.txt
paste ../$bigmap-lonlat.txt bustedi-$bigmap-$img.txt > $var

echo "calling makeGeoTiffBig.sh"
sh ~/bin/makeGeoTiffBig.sh $var $product

$product is as before, while $var is IoverF.ll, phase.ll, emiss.ll, or inc.ll

The above four scripts are called by run4.sh, which is essentially a copy/paste script with different images. Note the use of & and "wait". & is to get multiple processors running on each machine, and "wait" is to keep the script running until all four processes complete.

The key lines from run4.sh look like this:

cd $img
sh ~/bin/makeIoverFGeoBig.sh $img &
sh ~/bin/makePhaseGeoBig.sh $img &
sh ~/bin/makeEmissGeoBig.sh $img &
sh ~/bin/makeIncGeoBig.sh $img &
cd ..

wait

Since there are 8 processors per Hawk node, we want to call 2 images per node. To do this we have a script that uses sbatch commands. Here's what one of those looks like:

#\!/bin/bash
#
#SBATCH -J Call1.sh              # Job name
#SBATCH -t 2-0:00 # time (D-HH:MM)
#SBATCH --partition=cpu
#SBATCH -o slurm.%N.%j.out # STDOUT
#SBATCH -e slurm.%N.%j.err # STDERR
 
sh ~/bin/run4.sh N1563651588 &
sh ~/bin/run4.sh N1563651648 &
 
wait

Rather than type each by hand, I instead have a script (makeScript.sh) to make a bunch of these:

# 29 Sep 2021 - John R. Weirich
# Script to call different photo scripts

imgList=$1

if [ -z $imgList ]; then
        echo "Please select a list of images"
        echo "Usage: <program> <Image List File>"
        exit
fi

list=`cat $imgList`

top=1
count=0

rm -f Call*.sh

for i in $list
do
 if [ $top = "1" ]
 then
  let count=$count+1
  out="Call$count.sh" 
  echo "#!/bin/bash" > $out
  echo "#" >> $out
  echo "#SBATCH -J $out              # Job name" >> $out
  echo "#SBATCH -t 2-0:00 # time (D-HH:MM)" >> $out
  echo "#SBATCH --partition=cpu" >> $out
  echo "#SBATCH -o slurm.%N.%j.out # STDOUT" >> $out
  echo "#SBATCH -e slurm.%N.%j.err # STDERR" >> $out
  echo " " >> $out
  echo "sh ~/bin/run4.sh $i &" >> $out

  top=2
 else
  echo "sh ~/bin/run4.sh $i &" >> $out
  echo " " >> $out
  echo "wait" >> $out

  top=1
 fi

done

if [ $top = "2" ]
then
 echo " " >> $out
 echo "wait" >> $out
fi

To fire everything off, you'll make a copy/paste that will look like this:

sbatch Call1.sh
sbatch Call2.sh
etc.

Once all those processes are finished, you'll have converted each *.txt file into a *.nc file. Now pull that back down to your local machine to run through GDAL.

rsync -hapvP --prune-empty-dirs --include="*/" --include="*.nc" --exclude="*" jweirich@hawk.psi.edu:/home/jweirich/Tethys/geoTiffTethys/LEADHL/ .

Once downloaded, run

sh ../bin/wrapperAfterClusterImage.sh imgListLEADHL 

wrapperAfterClusterImages.sh is this:

# 30 Sep 2021 - John R. Weirich
# Wrapper to turn all the *.nc into geoTIFFS

imgList=$1

if [ -z $imgList ]; then
        echo "Please select a list of images"
        echo "Usage: <program> <Image List File>"
        exit
fi

list=`cat $imgList`

for i in $list
do
 cd $i
 sh /usr/local/spc/bin/afterClusterImage.sh IoverF $i
 sh /usr/local/spc/bin/afterClusterImage.sh a $i
 sh /usr/local/spc/bin/afterClusterImage.sh e $i
 sh /usr/local/spc/bin/afterClusterImage.sh i $i
 cd ..
done

And afterClusterImage.sh is this:

# 28 Sep 2021 - John R. Weirich
# Make the various geoTiffs using GDAL
# Run from geoTiff[directory]/
# 30 Sep 2021: Began modifying, then undid changes (hopefully they are undone correctly!)

# Usage in geoTiff directory : sh /usr/local/spc/bin/afterClusterBigmap.sh <product/type name> <image>

type=$1
img=$2

if [ -z $type ]; then
        echo "Please select the type"
        echo "Usage: <program> <type> <Image>"
        exit
fi

if [ -z $img ]; then
        echo "Please select the image"
        echo "Usage: <program> <type> <Image>"
        exit
fi



 if [ ! -e ../config.txt ]
 then
  echo "Make config.txt!"
  exit
 fi

 source ../config.txt

 if [ ! -e ./${type}.nc ]
 then
  echo "Make ${type}.nc!"
  exit
 fi



bigmap=$BIGMAP
argR=$ARGR
argI=$ARGI
degPx=$DEGPX
proj=$PROJECT
body=$BODY
runAll=$RUNALL
ver=$VERSION

echo "$bigmap"
echo "$argR"
echo "$argI"
echo "$degPx"
echo "$proj"
echo "$body"
echo "$runAll"


# Make normal GeoTiff

echo "gdal translate"

gdal_translate -of GTiff -b 1 -a_srs ../support/$proj.prj  NETCDF:${type}.nc ${bigmap}-${img}-${type}-v${ver}.tif

#Make GeoTiff readable by ISIS
gdal_translate -of ISIS3 -tr $degPx $degPx -r bilinear -b 1 -co TARGET_NAME=$body -co DATA_LOCATION=GEOTIFF -a_srs ../support/$proj.prj NETCDF:${type}.nc ${bigmap}-${img}-${type}-ISIS-v${ver}.lbl

Note: See "Grid to GeoTIF" for a better program than gdal_translate, since gdal_translate doesn't always write the projection.


Make Pretties

gmt begin GMT_cont
gmt set GMT_THEME cookbook
gmt grdcontour test.nc
gmt end show
#gmt grdcontour test.nc -C10 -A50

gmt begin GMT_img
gmt set GMT_THEME cookbook
#gmt makecpt -Crainbow
gmt grdimage test.nc  -JM6i -B -BWSnE
gmt colorbar -DJTC -Bxa -By+lm
gmt end show


gmt begin GMT_img
gmt makecpt -Crainbow
gmt set GMT_THEME cookbook
gmt grdimage test.nc  $argR  -JM6i -B -BWSnE
#gmt colorbar -DJTC -I0.4 -Bxa -By+lm
gmt colorbar -DJTC -Bxa -By+lm
gmt end show

Setup

Use Dropbox spcShare directory

Then in the working directory

How to make DSK from ICQ and MAP

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.

Notes on extracting information from geotiff. i.e. Entries for OLAF

The below was written prior to utilizing gdalwarp to make the geotiffs. See "Grid to GeoTIF" section for details, but if you use gdalwarp to make the geotiff you can also output a sample xml label that has most (all?) of the information below.

To get the pixel size of a geotiff, use gdalinfo. Command and output of a rectangular pixel size are shown below. Number of pixels is shown by the "Size is 501, 100" where 501 is px and 100 is line. Pixel size (in deg) is given by "Pixel Size = (0.036126000000000,-0.181000000000000)". Note you can also get this number by using the "Corner Coordinates:" of (292.297 - 274.198) / 501 = 0.036126, or (3.115 - -14.984) / 100 = 0.181. GDAL outputs a negative sign in front of the 0.181, I am not sure why.

<rand> test$ gdalinfo -stats LEADEQ-radius-v1.tif
Driver: GTiff/GeoTIFF
Files: LEADEQ-radius-v1.tif
       LEADEQ-radius-v1.tif.aux.xml
Size is 501, 100
Coordinate System is:
GEOGCRS["Tethys 2000",
    DATUM["D_Tethys_2000",
        ELLIPSOID["Tethys_2000_IAU_IAG",535600,54.6530612244898,
            LENGTHUNIT["metre",1,
                ID["EPSG",9001]]]],
    PRIMEM["Greenwich",0,
        ANGLEUNIT["degree",0.0174532925199433,
            ID["EPSG",9122]]],
    CS[ellipsoidal,2],
        AXIS["latitude",north,
            ORDER[1],
            ANGLEUNIT["degree",0.0174532925199433,
                ID["EPSG",9122]]],
        AXIS["longitude",east,
            ORDER[2],
            ANGLEUNIT["degree",0.0174532925199433,
                ID["EPSG",9122]]]]
Data axis to CRS axis mapping: 2,1
Origin = (274.197937000000024,3.115500000000000)
Pixel Size = (0.036126000000000,-0.181000000000000)
Metadata:
  AREA_OR_POINT=Area
  lat#actual_range={-14.894,3.025}
  lat#axis=Y
  lat#long_name=latitude
  lat#standard_name=latitude
  lat#units=degrees_north
  lon#actual_range={274.216,292.279}
  lon#axis=X
  lon#long_name=longitude
  lon#standard_name=longitude
  lon#units=degrees_east
  NC_GLOBAL#Conventions=CF-1.7
  NC_GLOBAL#GMT_version=6.2.0 [64-bit]
  NC_GLOBAL#history=sphinterpolate -R274.216/292.279/-14.894/3.025 -I501+n/100+n -Gtmp.nc
  z#actual_range={525616.3125,530976.5625}
  z#long_name=z
  z#_FillValue=nan
Image Structure Metadata:
  INTERLEAVE=BAND
Corner Coordinates:
Upper Left  (     274.198,       3.115) (274d11'52.57"E,  3d 6'55.80"N)
Lower Left  (     274.198,     -14.984) (274d11'52.57"E, 14d59' 4.20"S)
Upper Right (     292.297,       3.115) (292d17'49.43"E,  3d 6'55.80"N)
Lower Right (     292.297,     -14.984) (292d17'49.43"E, 14d59' 4.20"S)
Center      (     283.248,      -5.934) (283d14'51.00"E,  5d56' 4.20"S)
Band 1 Block=501x4 Type=Float32, ColorInterp=Gray
  Minimum=525616.312, Maximum=530976.562, Mean=528625.394, StdDev=890.336
  NoData Value=nan
  Metadata:
    actual_range={525616.3125,530976.5625}
    long_name=z
    NETCDF_VARNAME=z
    STATISTICS_MAXIMUM=530976.5625
    STATISTICS_MEAN=528625.39353917
    STATISTICS_MINIMUM=525616.3125
    STATISTICS_STDDEV=890.33610412375
    STATISTICS_VALID_PERCENT=100
    _FillValue=nan

attachment:HexFiend2.png

Notes on extracting information from cube. i.e. Entries for OLAF

Most data can be gleaned from open the cube in the program "vi". Note that to get the cube into BandSequential you may need to run the ISIS program "cubeatt from=<filename1>.cub to=<filename2>.cub+BandSequential"

Object = IsisCube
  Object = Core
    StartByte = 65537
    Format    = BandSequential

    Group = Dimensions
      Samples = 1821
      Lines   = 1821
      Bands   = 1
    End_Group

    Group = Pixels
      Type       = Real
      ByteOrder  = Lsb
      Base       = 0.0
      Multiplier = 1.0
    End_Group
  End_Object
End_Object

Object = Label
  Bytes = 65536
End_Object

Object = History
  Name      = IsisCube
  StartByte = 13329701
  Bytes     = 1069
End_Object
End

Archiving SPC (last edited 2023-01-05 08:54:52 by JohnWeirich)