Rochdi

Hello Sir, Please I don't clearly understand your instructions above, I read about "New File Builder" from I3harrisgeospatial.com, but it doesn't include what you mentioned, they give only instructions about files of the same size. Rochdi.

Hello there, Please any help concerning my question? I'm trying to dedug the errors occurred in the code above but nothing seems to work as well as "New File Builder" and layer stacking tools. The first requires to have files that share the same size, and second tool gives inconvenient results. Looking forward to your reply,

Absolutely, I launched the process with "New File Builder" under "Raster Management", but the same error has occurred once I added the second cube (as been below). Any help?

I followed your instructions, but the following error has occurred: file: l_warped.dat Problem: Dimensions for this file: (2952 x 2358) are inconsistent with previous file (2984 x 2366)

Hello There, I'm trying to merge the S (VNIR) and L (IR) into one single cube as discussed in the topic "Complete Near-infrared Spectrum" in the forum. I go along with the following steps: 1- Download the CTX covers the S/L cubes area in ODE (using Geotiff format CTX product). 2- In CAT, do map projection for both S and L cubes. 3- Register map projected S and L cubes to the CTX product by using "Image Registration Workflow". 4- Rename the attached SL_alignment_v5.txt to SL_alignment_v5.pro and open it in IDL, In IDL interface, click "Run', it will ask you select L cubes (results from step 3) , then select S cubes (results from step 3) and output the merged data. However, the code stops running and the following error has occurred: % Execution halted at: REVERSE_RASTER_BANDS 144 C:\Users\Rochdi Khalid\Desktop\in_progress\ritchey_analysis\draft\SL_alignment_v5.pro % SL_ALIGNMENT_V5 50 C:\Users\Rochdi Khalid\Desktop\in_progress\ritchey_analysis\draft\SL_alignment_v5.pro % $MAIN$ You help is much appreciated, Best. SL_alignment_v5.txt

That's what I did yesterday, thanks a lot sir.

That's it, but why when I extracted the spectral profile to a *.txt file, the file still include the default bad bands?

Hello Explorers, I want to make sure whether the default bad bands algorithm is already applied to TRR3 datasets or not. I noticed that in your useful doc "CRISM Data Users' Workshop Nili Fossae Data Processing Walkthrough". The example of (page 10) shows that before the S (VNIR) TRR2 cube being converted to CAT format, some bad bands have been detected at 0.4um and 0.7um as well while TRR3 version not, in this version it seems like the mentioned algorithm is already applied. If it's so, does conversion to CAT can affect on the future pre-processing analyses (I mean photometric correction, atmospheric correction, etc)? Look forward to your reply, Rochdi Khalid.

Hello Ray, I'm looking for DEM of the scene above. Is PDS Geosciences Node Data provide Digital Elevation Models of CRISM data? Your help is much appreciated, Rochdi.

Thanks a lot, Ray. But I came up with this instead, I chose to create two views, one for the preprocessed TRDR data, and other for the spectral index map. Then, I link them together as seen below. Now, I can see the spectral profile of each pixel I clicked on.

Thanks a lot, Sir. I still have another question, I used ENVI band math to calculate a certain index, the output shows a signle monochrome image as seen below. By using the mentioned output, I want to display the spectral profile of the bright areas, but the "spectral profile" icon in the ENVI toolbar is disabled, it gives only three options: arbitrary profile, horizental profile, and vertical profile. Does it occur because the displayed output is one monochrome band? if it's so, how can I fix this, please? Your help is much appreciated, Rochdi.

Thanks a lot, Now I'm totally sure about it. Please, I still have one question, is it necessary to flatten result after I do a band math? and what is used for?

Hello There, Just to make sure and to erase any doubts I have about the calibrated CRISM directories: TRDR: this CRISM contains hyperspectral targeted observations converted to units of radiance (I/F), divided into two spectral cubes VNIR (s) and IR (L). TER: this CRISM directory includes I/F hyperspectral targeted observations with a full spectral range (VNIR-IR), this directory has been corrected for geometric, photometric, atmospheric, and intrumental effects. MTRDR: Map-projected version of TER directory. Currently, I'm using TRDR directory in my research but I'm still wondering about the most recommended directory for mineral detection. Look forward to your reply, Rochdi Khalid

Hi Ray: Thanks a lot, that's what I did.

Hi Ray: the data I'm using includes IF in their label (frt0000a0b7_07_if164l_trr3 | frt0000a0b7_07_if164s_trr3). So, there's no need to convert them to IF. But is it okay to see "data_value" in Y axis instead of "I/F" while I display the spectral profile? Thanks.