Jump to content
PDS Geosciences Node Community

Search the Community

Showing results for tags 'cat'.

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


Forums

  • PDS Geosciences Node
    • Announcements
    • For data providers
    • For data users
  • PDS Geo Tools
    • Analyst's Notebook
    • ODE - Orbital Data Explorer
    • Virtual Astronaut
    • Spectral Library
  • Workshops
    • MRO/CRISM Data Users' Workshop 2012

Blogs

  • Working with PDS data
  • Using the Analyst's Notebook

Find results in...

Find results that contain...


Date Created

  • Start

    End


Last Updated

  • Start

    End


Filter by number of...

Joined

  • Start

    End


Group


Location


Interests

Found 10 results

  1. Hi, I am trying to use the MSP I/F data from CRISM for spectral analysis. It is of the third version (TRR3). I followed these steps: 1)Convert PDS file to CAT file 2)Photometric correction (divide by cosine of incidence angle) 3)Atmospheric correction using the Volcano Scan technique (default 61C4) However I am yet to do the destriping and despiking for the data cube. I am not sure of which option to use - CIRRUS clean cube or the MRO CRISM Remove Stripes. Additionally, I also found that in one of the workshop presentations, it is not necessary to go for destriping and de
  2. Dear all, I was trying process CRISM TRDR (.trr3) data using standard corrections in CAT 7.3.1. following the procedure: 1. FRT IF to CAT 2. ATP and Photometric correction 3. Map Utilities- Project Single Cube 4. Summary Products However, when I tried to project single cube the CAT showed an error message though I got a projected image in the window. Attached here is the error message. How can I fix this problem? Another thing, is the procedure above complete to analyze CRISM data? Or, I need more corrections like EPF, Spectral shift, spectral smile etc. to
  3. Hello, I installed CAT 7.3.1. in ENVI 5.4 as per the instruction. ENVI shows CAT tool neither in menubar nor under Display. An extension toolbox has created named ''cat_menu'' (see attachment). But, this icon doesn't work also! How can I fix this? Thank you,
  4. Dear all, I have been trying to use CRISM TRDR (trr3) image of ''FRS0002AEAB_01_IF167L_TRR3'' and ''FRS0003012C_01_IF167L_TRR3'' using CAT in ENVI. However, after standard corrections (ATP), I tried to project the image cube using ''Project Single Cube Data'' option. I got a projected image of bad shape which does NOT match with map context image and kml shape (attached the screenshots). I guess only a part of the image was projected. Also, CAT showed a message after performing the processes (attached also). Can anyone please let me know how can I fix the problem? Thank you,
  5. Hi, I've come across many workshop presentation papers and research papers in which the processing of CRISM images include 'Spectral Smile Removal' and the entire sequence of Empirical Processing. 1. When we download the TRR3 data, is it already taken care of? Or do we have to follow a certain algorithm to manually apply it? Can you please suggest me how to do it? It is not mentioned in any workshop papers. 2. If we have to manually perform this task, do we have to do it via IDL/MATLAB programming or is it possible to do so in a GUI software (viz CAT, ENVI)? Thank You
  6. The CRISM Analysis Tool (CAT) is a collection of ENVI and IDL procedures for reading, displaying, and analyzing MRO CRISM data. CAT is now available for ENVI versions 4.x and 5.x, for both Unix and Windows systems. See details at http://pds-geosciences.wustl.edu/missions/mro/crism.htm#Tools.
  7. Hello, When using the CIRRUS corrections within CRISM CAT I obtain an error - part of which is "no good data found". I know that CIRRUS corrections are generally unnecessary with TRR3 data, but the extra pre-processing really helps further on in my analysis. The destriping step is performed correctly, and I obtain an output image, so data exists. I have read the help file and taken a look at the .pro files for these corrections so that I can see what is going on, and varied my input parameters (spatial/spectral kernel size - yet always leaving spectral smoothing at 0) but to no avail. As I
  8. Hello, I notice that when I use the CAT 7.2.1 - Map Utilities - Project Single Cube Data tool, I obtain a different result than when I use the Build GLT tool in ENVI, with: X Geometry band = Band 5 of the associated DDR Y Geometry band = Band 4 of the associated DDR according to the instructions here on slide 23. http://crism.jhuapl.edu/data/CRISM_workshop_2009/docs/agenda/CRISM_Workshop_090322_Nili_Fossae_Walkthrough_FPS.pdf Looking at the IDL projection_event.pro, I see that the lat and lon keywords are defined as follows: ; Pull some planes from the geofile lat
  9. Dear All, As I am working in Planetary Sciences, I use hyperspectral imagery for analysis of spectral characteristics of minerals in extra - terrestrial body. I found that CAT_ENVI extension is useful for such analysis. I did download and tried to install as per the instruction found in http://pds-geosciences.wustl.edu/missions/mro/crism.htm I am using ENVI 4.7 with IDL 7.1 in Windows 7. I added command lines as per given in the user guide. There was no errors while i Installed. But I couldn't find the 'CAT_ENVI' tab in ENVI menu. Can anyone suggest me how t
  10. Hello, I've created some CRISM IR summary products using the CAT and am visualising them in combination with a HiRISE image. To highlight areas with the largest spectral response, in OLINDEX for example, I have read that typically stretching is performed using zero as the minimum realistic value and the 99th percentile as the maximum. The range of the OLINDEX parameter is very small: Minimum -0.107, Maximum: 0.084, so Adjusted Min: 0, Adjusted Max: 0.043. I was wondering what the typical expected values for these parameters are. What constitutes a significant response? For exampl
×
×
  • Create New...