February 22, 20215 yr Hello, I am a fourth year Geology student, and for my research project I am doing a comparison of Martian and Terran Alluvial Fans. I'd like to use CRISM data to display the mineralogy of fans in craters. However, the way I was planning on doing this was using ArcMap to show intensity of pixels in bands. I'm not sure if this is a valid methodology and I'd appreciate any advice on how to go about displaying mineralogy. I understand that analysis can be done using ENVI, but I've not had any experience with this. I would also say I'm just about competent in using ArcMap. Thank you!
February 26, 20215 yr Hi Maeve: ENVI is the main way that researchers process CRISM data, including mapping mineral parameter maps. Do you have access to ENVI? And do you know which CRISM scenes you would like to use? I can tutor you through using ENVI and CRISM data, but first let me know if you have access to ENVI software. Ray Arvidson Geosciences Node Manager and CRISM Team Member.
March 1, 20215 yr Author Hello Ray, I do have access to ENVI software - I'm trying to get CAT extension downloaded at the moment. As for the CRISM data I want to use, I'm not too sure? I think MTRDR might be the best type? Thank you so much, Maeve
March 2, 20215 yr Maeve: You are downloading CAT from our Geosciences Node site? Try incorporating it into ENVI 5.5.3 or 5.6, not the Classic version. If you need help let me know. We can then go from there. Tryi using our PDS Mars Orbital Data Explorer to find and download some MTRDR files. I can help you get started on how to use the data once you get CAT working with ENVI. Ray Arvidson
March 19, 20215 yr Author Hi Ray, Unfortunately, I haven't been able to download CAT to work with ENVI due to administration restrictions in my University. I have managed to download MTRDR files. Is there any other way I can analyse this? Maeve
March 19, 20215 yr Author Is there any way that I can analyse CRISM MTRDR data without the CAT extension? Many thanks, Maeve
March 19, 20215 yr Author Or is there a way to mount the CAT extension without using program files? Many thanks, Maeve
March 22, 20215 yr Maeve: You can load MTRDRs directly into ENVI without the need for the CAT extension. This is because these files come with an envi header. Let me know if this works for you. Ray Arvidson
March 26, 20215 yr Author Hi Ray, I've managed to load them directly into ENVI! Would you still be able to give me advice on how to analyse the data? Maeve
March 26, 20215 yr Hi Maeve: I would be happy to help out. In the past something like a one hour zoom session worked to get other users familiar enough with CRISM data to get them up and running on analysis. Let me know if this would be a good approach and when you might be available next week. Ray
March 28, 20215 yr Author Hi Ray, Thank you so much! That sounds like a great approach! The only day I am busy next week is the 1st of April. Maeve
March 31, 20215 yr Maeve: I am in the Central Daylight Savings time zone (CDT). What is your time zone? I am thinking about a one hour Zoom session this Friday at 3 PM CDT. Tell me which MTRDR you would like me to load up for the session on how to do some analyses using ENVI. Ray
April 1, 20215 yr Author Hello Ray, I am in BST (British Summer Time). 3pm for you would be 9pm for me, I think, which works fine! I think I'd like to use 'FRT0000537A_07_IF164J_MTR3' if that's okay. Maeve
April 2, 20215 yr Hi Maeve: Email me at arvidson@wustl.edu and I will send the Zoom invitation for Monday CDT 3pm. Ray
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