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PDS Geosciences Node Community


  1. PDS Geosciences Node

    1. Announcements

      The latest news from the Geosciences Node

    2. For data providers

      Discussions pertaining to preparing data for archiving with PDS

    3. For data users

      Questions and comments related to locating, accessing, and using PDS Geo data

  2. PDS Geo Tools

    1. Analyst's Notebook

      Posts relating to the Analyst's Notebook

    2. ODE - Orbital Data Explorer

      Posts related to the Orbital Data Explorer

    3. 4
    4. Spectral Library

      Posts relating to the PDS Geosciences Node Spectral Library

  3. Workshops

    1. MRO/CRISM Data Users' Workshop 2012

      Posts relating to the 2012 MRO/CRISM Data Users' Workshop.

  • Recent Topics

    • August 8, 2018 – MRO HiRISE Updates
      - MRO HiRISE EDR, RDR, DTM and Anaglyph data products released through July 7, 2018 (Orbit 55,999)
      See https://wufs.wustl.edu/ode/odeholdings/Mars_holdings.html  
    • @Ray Arvidson thank you for the replay. I am aware of using ENVI and CAT so I can transform the cube data to the map projection. But I am trying to read the data into Matlab in combination with the MOLA data. But since the cube is distorted (stretched to fit in a cube), I can't align the cube data with the MOLA data. I have also been able to read the DDR file and I got a cube with 14 layers in the 3rd dimension. At layer 4 and 5 I have the latitude and longitude map, but I am not quite sure on how to read them, since the data oscillates a lot. Also to be noted, I am using these functions to read the cube and DDR data and at least the cube data look reasonable, but the DDR data look just uniformly gray with salt and pepper noise on them. Thanks a lot for you help, since I am quite new in the field and I want to understand how to interpret the data I am getting.
    • Greetings: I am the Director of the PDS Geosciences Node and also a CRISM Team Member. I believe that the top image you show is one called sensor space, i.e., how the instrument acquires data row after row. The bottom one is map projected. The DDR file has planes that include the latitude and longitude in sensor space, corresponding to the pixel locations of the actual data. Are you trying to project the data to map form? If so would you be trying to do this in Matlab? ENVI can be used with the CRISM Analysis Tool (CAT) to do this for you. But if you need to use Matlab let me know in more detail what you are trying to do and we can help you get there. Ray Arvidson
    • Hello, I am currently working with the CRISM Data in Matlab and when I load it, the data is always saved in a rectangular matrix. But since I need the original shape, I need to transform the cube data into it's original form. I have two screenshots how it should look like. I have also been able to read out the DDR file, but I can't find anything on the web on how to use that data. I would appreciate it if someone could help me further regarding this.
    • Release 18 of Mars Science Laboratory (MSL) data includes new raw and derived data acquired on sols 1870 through 2003.The data are available through PDS web sites, starting at the Geosciences Node MSL page. The MSL Analyst's Notebook is a useful tool for searching, browsing, and downloading MSL products.