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Susie Slavney

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  1. Release 38 of Lunar Reconnaissance Orbiter data is now online at the Geosciences Node. This release includes new data acquired between December 15, 2018, and March 14, 2019, for most data sets. Data can be reached from the Geosciences Node LRO page. The Lunar Orbital Data Explorer allows searching and downloading of LRO data.
  2. I reported the broken links to the Astrogeology group at USGS-Flagstaff. They were fixed this morning. Thanks for letting us know.
  3. What is the problem you are having? Please be more specific.
  4. From www.mars.asu.edu/data you can download the TES mineral maps with the raw data in VICAR format. GDAL (https://www.gdal.org/) can read and export VICAR files. For example, these GDAL commands work on the VICAR files: gdalinfo TES_Glass_Clay_numeric.vic gdal_translate -of TES_Glass_Clay_numeric.vic TES_Glass_Clay_numeric_gdal.tif For another resource, there is MATLAB code to read VICAR files on Github at https://github.com/jnulzl/vicarRead.
  5. Data from Release 58 of the Mars Exploration Rover mission are now online at the PDS Geosciences Node. This release includes APXS, Atmospheric Opacity, Microscopic Imager, Navcam, Pancam, and RAT data from sols 5041 through 5130 for the Opportunity rover.
  6. Release 36 of Lunar Reconnaissance Orbiter data is now online at the Geosciences Node. This release includes new data acquired between June 15, 2018, and September 14, 2018, for most data sets. Data can be reached from the Geosciences Node LRO page. The Lunar Orbital Data Explorer allows searching and downloading of LRO data.
  7. Release 19 from the Mars Science Laboratory (Curiosity) mission includes new data for APXS, ChemCam, CheMin, DAN, and SAM. The data are online at pds-geosciences.wustl.edu/missions/msl.
  8. I believe the Matlab function "fread" would be the correct way to read a binary file, although I have no experience with Matlab. You will need to know the size and data type of the .img file, which are given in the corresponding label file (.lbl). In the label, look for the keywords LINES, LINE_SAMPLES, SAMPLE_BITS, and SAMPLE_TYPE. For example, for the product at your link above, the label shows LINES = 52224 LINE_SAMPLES = 5064 SAMPLE_BITS = 16 SAMPLE_TYPE = LSB_INTEGER (this means least significant byte first, or little-endian) The label also tells you that the file has 104449 records, each one 5064 bytes long, and the image data start at the second record. So you'll have to skip the first record. RECORD_BYTES = 5064 FILE_RECORDS = 104449 LABEL_RECORDS = 1 ^IMAGE = 2 I am guessing that the Matlab commands would be something like this: fid = fopen('m1185002263rc.img', 'r'); % Open the file to read status = fseek(fid, 5064, 'bof'); % Skip 5064 bytes from the beginning of the file a = fread(fid, [5064,52224], 'int16' 'ieee-le'); % Read in a 5064x52224 array of little-endian signed 16-bit integers Again, I am only guessing about the Matlab commands based on information I found online here. http://matlab.izmiran.ru/help/techdoc/ref/fread.html The image pixels are stored in the file in order from left to right, top to bottom. I understand the fread statement fills the array in column order. So you might have to transpose the array to get it to display correctly.
  9. Dear Shyam, To answer your questions: 1. The '.tif' files are reduced-resolution, compressed versions of the '.img' files. They are browse images; that is, they are intended to be used for a quick look at the data to help choose products of interest. They are not suitable for science analysis because the data have been compressed. The actual LROC image products are in the '.img' files, and yes, they can be very large. Each '.img' file has an embedded text header at the beginning of the file that has the metadata for the product, including the size, byte order, and bytes per pixel. You could use this information in Matlab to read in the image. 2. I think there should be a .tif file for every .img file. The one for M1185002263RC is online here: http://lroc.sese.asu.edu/data/LRO-L-LROC-3-CDR-V1.0/LROLRC_1023/EXTRAS/BROWSE/2015120/M1185002263RC_pyr.tif For more information about the image products, look here: - Lunar Orbital Data Explorer's User Manual page about LROC http://ode.rsl.wustl.edu/mars/pagehelp/quickstartguide/index.html?lroc.htm - LROC EDR/CDR Software Interface Specification http://lroc.sese.asu.edu/data/LRO-L-LROC-3-CDR-V1.0/LROLRC_1035/DOCUMENT/LROCSIS.PDF You might want to use the Lunaserv Global Explorer and the Quickmap 3D tools on the LROC web site, http://lroc.sese.asu.edu/archive. If you need more help, I will put you in contact with someone at the LROC Data Node. Regards, Susan
  10. Release 35 of Lunar Reconnaissance Orbiter data is now online at the Geosciences Node. This release includes new data acquired between March 15, 2018, and June 14, 2018, for CRaTER, Diviner, LAMP, LEND, LOLA, LROC, and Mini-RF. Data can be reached from the Geosciences Node LRO page. The Lunar Orbital Data Explorer allows searching and downloading of LRO data.
  11. 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.
  12. Dear Shyam, I have forwarded your question to the PDS Cartography and Imaging Node, where the LROC data are archived, and to someone on the LROC team. I reminded them yesterday that we are still waiting for an answer. I'm sorry for the delay. Susan Slavney
  13. Mars Odyssey Release 64 includes new raw data (EDR) , Derived Neutron Data (DND) and Derived HEND Data (DHD) products covering the period October 1 through December 31, 2017. Averaged Neutron Data (AND) and Averaged HEND Data (AHD) products cover the period October 17 to January 26, Ls 75 to Ls 120 in year 09. This release also includes revised EDR and DND data from July 1 to September 30, 2017. The data are online at the PDS Geosciences Node at http://pds-geoscienc...dyssey/grs.html.
  14. Data from Release 56 of the Mars Exploration Rover mission is now online at the PDS Geosciences Node. This release includes APXS, Atmospheric Opacity, MI, Navcam, and Pancam data from sols 4861 through 4950 for the Opportunity rover.
  15. Hi. I suggest you use the Orbital Data Explorer for Mars, http://ode.rsl.wustl.edu/mars/. Choose the Data Product Search tab, and open the Step One options. Select the desired GRS data sets under the ODY (Odyssey) heading. Then narrow down your search by product ID, location, or other criteria in Step 2. You can preview your search results in Step 3, and finally submit your query in Step 4. You can select the products you wish to download from the search results list. If you already know the ID or file name of the products you want, you can download them directly from the archive by following the links at http://pds-geosciences.wustl.edu/missions/odyssey/grs.html. Don't forget to download the PDS label that accompanies each product (*.LBL). It contains useful metadata about the product.
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