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June Wang

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Everything posted by June Wang

  1. February 10, 2021 – MRO HiRISE Updates - MRO HiRISE EDR, RDR, DTM and Anaglyph data products released through January 4, 2021 (Orbit 67699) See https://ode.rsl.wustl.edu/odeholdings/Mars_holdings.html
  2. Yes, ArcGIS has better projection engine defined. And ENVI used ArcGIS projection engine in its application. The steps 3-9 you mentioned are actually based on ENVI classic interface. That blog was written years ago. After that there are many new release of ENVI, and its current version is 5.6. I don’t know which version you are using now, probably something 5.4+. If you are using a newer version of ENVI interface, one way to add the spatial reference is to find “Edit ENVI Header” under “Raster Management” in the toolbox as shown below in the right. You can add spatial reference from there. Instead of adding something for the moon, you will need to add the projection for Enceladus for this data product. When I read the label file, I noticed this data product is a CASSINI EDR data. It is archived at PDS Imaging Node under volume https://pds-imaging.jpl.nasa.gov/data/cassini/cassini_orbiter/coiss_2042/ . I would not suggest to use this EDR directly in your crater counting. If you read the “aareadme.txt” file in this volume, it said “The ISS team is not systematically performing calibration processing on the ISS EDRs.” However, their 'CALIBRATION' volumes (COISS_0xxx) “include all the necessary tools and documentation to support future users in performing their own calibration processing of the ISS EDR image datasets.” And the section “3. Data Calibration“ of “aareadme.txt” has mentioned “The Cassini ISS archive volumes contain an extras directory that is included only on the eleventh Calibration volume. This directory contains the source code for the Cassini Imaging Science Subsystem Calibration (CISSCAL) software. This software, developed by the Cassini Imaging team, allows the user to radiometrically and geometrically process the EDR-level images into higher level calibrated images.” You can also read the SIS file (https://pds-imaging.jpl.nasa.gov/data/cassini/cassini_orbiter/coiss_2042/document/edrsis.pdf) for more information. If you contact with the people at PDS Imaging Node, or people from the CASSINI team, they may provide expert help for you on this topic than I. Thanks, June
  3. Hi Lex, Here is the post. If you still have problem, you can send me a sample image of both data sets. I haven't work with Europa or Io data before, but I can take a look. Thanks, June
  4. February 3, 2021 Release of PDS4 migrated Lunar Prospector data archives at the Geosciences Node are loaded into ODE. This includes calibrated GRS and NS data, GRS elemental abundance tables, and RSS spherical harmonic gravity models archived in the below four bundles. lp_grsns_calibrated lp_grs_derived lp_rs_goddard_gravity_derived lp_rs_jpl_gravity_derived Please see below links for more information. https://pds-geosciences.wustl.edu/missions/lunarp/index.htm ODE Moon Holdings - https://ode.rsl.wustl.edu/odeholdings/Moon_holdings.html
  5. January 21st, 2021 - New Extended Mission 7 MEX MARSIS EDR and Subsurface RDR Data loaded into ODE. - Updated MEX MARSIS EDR data products released through December 31st, 2019 (Orbit 1- 20228) - Updated MEX MARSIS Subsurface RDR data products released through December 29th, 2019 (Orbit 1885-20221) See https://ode.rsl.wustl.edu/odeholdings/Mars_holdings.html for a full list of data holdings in ODE.
  6. January 8, 2021 – MRO HiRISE Updates - MRO HiRISE EDR, RDR, DTM and Anaglyph data products released through December 4, 2020 (Orbit 67299) See https://ode.rsl.wustl.edu/odeholdings/Mars_holdings.html
  7. January 7th, 2021 - Mars Odyssey Release 74 and Re-release of 50 &51 Data Updates Loaded NS and HEND raw and derived data into ODE through June 30th, 2020 Updated THEMIS standard data products (IREDR, IRRDR, IRBTR, VISEDR, VISRDR and VISABR data) from February 19th, 2002 to May 31st, 2020 Updated THEMIS geometry data products (IRGEO2, IRPBT2, VGEO2, and VISALB data) from September 28th, 2013 to May 31st, 2020 Updated re-release volumes for THEMIS VIS calibrated and derived products from release 50 and 51 See more information at https://ode.rsl.wustl.edu/odeholdings/Mars_holdings.html and http://static.mars.asu.edu/pds/errata.txt
  8. December 18th, 2020 SHARAD RDRs from SHARAD Operations for MRO Release 55 are now loaded into ODE, with data coverage from March 1, 2020 to May 9, 2020. There are no SHARAD data from February 9-29, 2020 due to maintenance activity on MRO.
  9. December 15th, 2020 - LRO Release 44 has been loaded into ODE. Updated LAMP EDR and RDR products from July 6th, 2009 to September 14th, 2020 Updated LEND EDR_SCI, EDR_HK, RDR_RSCI, and RDR_CHK products from June 18th, 2009 to September 14th, 2020 Updated LEND RDR_DLD and RDR_DLX products from June 27th, 2009 to June 14th, 2020 Updated Diviner EDR and RDR products from July 5th, 2009 to September 16th, 2020 Updated LROC EDR, CDR and RDR products from June 30th, 2009 to September 15th, 2020 Loaded Mini-RF new Version 3 Bistatic radar data products (EDR, RDR, and DDR) from January 28th, 2019 to March 31st, 2020 Updated LOLA EDR products from June 18th, 2009 to October 15th, 2020 Updated LOLA RDR products from July 13th, 2009 to October 15th, 2020 Updated LOLA RDR query tool database from July 13th, 2009 to October 15th, 2020 In Progress Diviner RDR query tool database from July 5th, 2009 to September 16th, 2020 Please see ODE Lunar Holdings - https://ode.rsl.wustl.edu/odeholdings/Moon_holdings.html
  10. December 3rd, 2020 - MRO Release 55 Loaded into ODE. - Updated MRO CRISM EDR and CDR products from September 27th, 2006 to August 9th, 2020 - Updated MRO CRISM DDR products from September 27th, 2006 to August 8th, 2020 - Updated MRO CRISM TRDR products from September 27th, 2006 to August 8th, 2020 - Updated MRO raw gravity data products released through November 10th, 2020 - Updated MRO SHARAD EDR products from ASI through May 9th, 2020 (orbits through 64623) - Updated SHARAD Radargram data products released through May 7th, 2020 (orbits through 64597) - Updated MRO MCS EDR, RDR and DDR products from September 15th, 2006 to July 31st, 2020 (orbits through 65689) - Updated MRO CTX EDR products from August 30th, 2006 to May 31st, 2020 - Updated MRO HiRISE EDR, RDR, DTM and anaglyph products released through November 3rd, 2020 (Orbit through 66899) Please see ODE Mars Holdings – https://ode.rsl.wustl.edu/odeholdings/Mars_holdings.html Note: SHARAD RDRs from ASI have not been delivered yet.
  11. November 25th, 2020 Release 15 of MRO CRISM MTRDR (Map-projected Targeted Reduced Data Record), TER (Targeted Empirical Record), and TRDR (Targeted Reduced Data Record) browse and extras data has been loaded into ODE. This release fills in data from August 9 through November 8, 2008. See https://ode.rsl.wustl.edu/odeholdings/Mars_holdings.html for more information.
  12. November 24th, 2020 - New MEX VMC Data Loaded into ODE - Loaded MEX new VMC EDR & RDR data products released with coverage through June 30th, 2020 (Orbit 20854). See https://ode.rsl.wustl.edu/odeholdings/Mars_holdings.html
  13. November 13, 2020 – MRO HiRISE Updates - MRO HiRISE EDR, RDR, DTM and Anaglyph data products released through October 3, 2020 (Orbit 66499) See https://ode.rsl.wustl.edu/odeholdings/Mars_holdings.html
  14. October 19th, 2020 - SHARAD EDR and RDR data from ASI for MRO Release 54 loaded into ODE, also loaded missing SHARAD RDRs from previous MRO Release 24. - Loaded delayed SHARAD EDRs and RDRs from release 54 (Data coverage: November 10, 2019, through February 8, 2020) - Loaded SHARAD RDR (ASI) missing data from release 24 (Data coverage: June 3 through August 3, 2012)
  15. No-data area will not change the line and sample value of each pixel in the data. So the data will still start from (1,1) for the top-left corner. All you need is just ignore those no-data pixels in your calculation without changing the line and sample values.
  16. One more finding is if using the function of “y = (1 - L0 - Line) * Scale” in line 128 of ‘DSMAP.CAT’ file, y value will always be negative with current label value input, which doesn’t match with the real y value in the data. It looks to me this equation could be changed to “y = ( L0 – Line-1) * Scale”. You can try LINE_PROJECTION_OFFSET = 4476. This value is just my guess, may not be correct. I have contacted with the data provider. I will post the final solution here when I hear anything back from the data provider’s.
  17. Hi Ayushman, Two things here. In your code, you looped around all the pixels. Please don’t include the nodata area in your calculation. The LINE_PROJECTION_OFFSET value in the label doesn’t match with the value of CENTER_LATITUDE. Need to check with the data provider to see what the value used in their processing pipelines. Thanks, June
  18. October 9, 2020 – MRO HiRISE Updates - MRO HiRISE EDR, RDR, DTM and Anaglyph data products released through September 1, 2020 (Orbit 66099) See https://ode.rsl.wustl.edu/odeholdings/Mars_holdings.html
  19. Hi Ayushman, Attached is the screen capture of the LROC RDR (orange color, NAC_ROI_VIKRAM__LOC_P708S0237_5M.TIF) overlain on a WAC mosaic near the South Pole area together with its spatial reference information. The feature matches well. If everything is correct in the book, it looks to me equation 20-15 is a better fit for this case. Have you checked other parameters or steps in your calculation? If you can send me your code and your original value input for the calculation, I can take a further look. Thanks, June
  20. Hi Ayushman, Question 1-> It looks to me C = 2* ARCTAN[P/(2*Rp)] is correct, when compared this with the equation (21-15) in book page 159 of the book “Snyder, J. P. (1987). Map Projections: A Working Manual. U.S. Geological Survey Professional Paper 1395. Washington, DC: United States Government Printing Office.” Please let me know if this is not correct to your test. Question 2-> Please use the value in the attached label. The sentence written in the DSMAP.CAT is more like a general case. Thanks, June
  21. Hi Ayushman, To get the lat&lon for each pixel of the LROC map projected RDRs, please read the ‘DSMAP.CAT’ at https://pds.lroc.asu.edu/data/LRO-L-LROC-5-RDR-V1.0/LROLRC_2001/CATALOG/, which gives the equations and steps on how to convert image array coordinates (Sample, Line) to map coordinates (x, y), and then from map coordinates (x, y) to planetocentric coordinates (Lat, Lon) for different kind of projections. All the parameters needed for the calculation could be find in the attached label of this product. Please let me know if you need more information. Thanks, June
  22. Hi Ayushman, Sorry, these are LROC NAC CDR data products. They are not map projected, but you can still use Arcmap and Gdal to read the data. I confused them with the LROC RDR data in your other post at https://geoweb.rsl.wustl.edu/community/index.php?/topic/2804-details-needed-for-lroc-nac-mosaic-img-file/&tab=comments#comment-4594. I will keep a post there on how to get the lat&lon for each pixel of the LROC map projected RDRs. In the index table under INDEX directory of the LROC CDR volumes, e.g., https://pds.lroc.asu.edu/data/LRO-L-LROC-3-CDR-V1.0/LROLRC_10**/INDEX/, you will find the lat&lon coordinates of the center point and 4 corner points. If you want to get the lat&lon for each pixel in the image, you will probably need to try the NAIF SPICE tools https://naif.jpl.nasa.gov/naif/toolkit.html or USGS ISIS https://isis.astrogeology.usgs.gov/index.html to see if they have function for this. Thanks, June
  23. October 6th, 2020 - New MEX OMEGA EDR Data Loaded into ODE - Updated MEX OMEGA EDR data products for extended mission 7 released through December 22nd, 2019 (Orbit 20196). See https://ode.rsl.wustl.edu/odeholdings/Mars_holdings.html
  24. Hi Ayushman, You can use gdal_translate command from gdal tool to translate the img data into a Geotiff, and use this Geotiff in any GIS tools. Arcmap can read the PDS IMG data directly with all its spatial reference information. The version I used here is an old one 10.2.2. Higher version should also work. June
  25. Hi Ayushman, This LROC IMG data has an attached label. You can view the label content with UltraEdit or a Nodepad tool. From the link you gave above, you can also download the Geotiff image from Extra Downloads box. When adding this Geotiff in Arcmap and moving you mouse on the image, you can see the coordinates of each pixel. Because this product is in Polar Stereographic projection, the default coordinates display is in meters. You can change the map setting to view the coordinates in degrees. Since this data including NoData, the red part as shown below, the westernmost longitude is not the left side of the mosaic and the maximum latitude doesn't correspond to the top of mosaic. Please let me know if you need more help. Thanks, June
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