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1 Replies and 41 Views
envi 5.3 hangs just first time 41 1
Started by Jorge Balsa
I have installed envi 5.3.1 on Linux, also on Windows. The first time I run envi ($envi -classic on Linux) it takes a long time for the popoup window to respond. It hangs for more than 30 minutes. The next times it works fine I have tried: - delete .idl (on user home) - run idl, then run .FULL_RESET_SESSION and restart the computer but it didn't work. Can somebody help me Thanks in advance.
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by Jorge Balsa 20 Jan 2021 02:25 AM |
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1 Replies and 22 Views
AST_05 (Surface Emissivity) 22 1
Started by sedat sedat
Should i apply atmospheric correction AST_05 (Surface Emissivity TIR) data. Also which gets better results for geological features AST_05 (surface emissivity TIR) or AST_09T (surface radiance TIR)
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by Mari Minari19 Jan 2021 06:41 AM |
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0 Replies and 36 Views
MNF statistics 36 0
Started by John Galimberti
Hello, I am filtering some hyperspectral data by using the inverse MNF transform. Doing the inverse transform, I eliminate the noisiest MNF components. How do I get an estimate of the signal percentage lost in the denoised data Thanks, John
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07 Jan 2021 07:18 AM |
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0 Replies and 40 Views
Unable to save Custom Equirectangular projection parameters values 40 0
Started by Garima Sodha
Hi, I am using ENVI 5.5 and while saving custom Equirectangular projection, the input parameters are not saved correctly in the projection file (map_proj.txt). I am giving different values of parameters but all the values (for Sphere radius, latitude of true scale, longitude of center meridian) are saved as 0 in the projection file (map_proj.txt). Please help me with this issue.
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28 Dec 2020 01:10 AM |
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1 Replies and 65 Views
ENVI modeler: layer stack from multispectral and panchromatic 65 1
Started by Morgan Bond
I am trying to use ENVI modeler (I do not have access to IDL), in ENVI 5.6 to process some Worldview-2 satellite imagery. What I have: Worldview-2, level 1b imagery Each 'image strip' consists of 7 multispectral and 7 associated panchromatic images. A .imd file provides information for image calibration A rpc file provides information for orthorectification. What would like to do: Use modeler to open each of the 7 multispectral files, and calibrate to TOA, the orthorectify the ima...
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by Jason Wolfe21 Dec 2020 02:00 PM |
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4 Replies and 225 Views
ENVI 5.3 classic startup issue - envi_check_updates / json_parse error 225 4
Started by Vipool Rathod
ENVI 5.3 classic mode does not seem to run across our Linux systems anymore. Below is the full error: JSON_PARSE: Unknown JSON, expecting true, false, null, number, string, '{', or '&91;' : / Execution halted at: ENVI_CHECK_UPDATES 594 ENVI_CLASSIC 493 ENVI 445 $MAIN$
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by Vipool Rathod12 Nov 2020 12:00 PM |
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5 Replies and 202 Views
ASTER 07XT Available Band List 202 5
Started by sedat sedat
I want to work with '07XT_ASTER L2 Surface Reflectance VNIR and Crosstalk Corrected SWIR V003' product. So recently i order and download ASTER scene ( AST_07XT_00305192005082601_20201001075438_21295.hdf and *.hdf.met files) for my project. I order this AST_07XT data level because i don't want to apply any atmospheric or cross talk correction to AST_L1T data set. But when i import the data to ENVI 5.3, band order and wavelengths are listed as below; ASTER VNIR Band1: 0.6610 ASTER VNIR Ban...
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by Mari Minari03 Nov 2020 05:56 AM |
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1 Replies and 118 Views
ENVI modeler specify stretch with Max and Min value 118 1
Started by Morgan Bond
I am trying to use ENVI modeler to speed up my raster stretch process for many images. However, one aspect that slows me down is that I would like to perform a square root stretch in envi modeler. To do this I need to first calculate statistics for each file, and add in the min and max values as a vector for each band (e.g. &91;12,74,160,619,42,138,1293&93;). Is there a way to speed this up by specifying that I just want the module to use the minimum and maximum values for each band (e.g. &91...
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by Jason Wolfe26 Oct 2020 02:43 PM |
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3 Replies and 182 Views
FeatureExtraction Workflow problem 182 3
Started by Jennifer Swenson
Hi, we discovered that after running the classification in the workflow, if you go back to alter your segments (or change attributes), the Next button is grayed out/non selectable. also classes cannot be saved at this point. So, you have to start from scratch. is there any way around this it seems going back and forth would be part of a 'workflow' and would improve the final classification. (ENVI 5.5.3).
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by Jason Wolfe08 Oct 2020 08:58 AM |
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1 Replies and 117 Views
Capturing ENVI commands in IDL 117 1
Started by David Hein-Griggs
Hello, I am trying to help a Ph.D. student process ~80 satellite images. She has a series of steps -Combine 66 img files into one file with that many bands. -Aggregate to a lower resolution -Convert to geotiff -extract regions of interest (ROIs) She can do all this with ENVI manually, but it sure would be nice to automate to process. I have coded in IDL before (it's been a while, but I remember the basics). What I am hoping is that there's a way to see the underlying IDL command b...
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by Jason Wolfe01 Oct 2020 08:25 AM |
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2 Replies and 154 Views
no data value dropped in layer stack 154 2
Started by Morgan Bond
I have a large Worldview 3 scene that is composed of a panchromatic image and a multispectral image. I am using ENVI modeler to create a layer stack of the pan, multispectral, and some veg indices (e.g. NDVI). I need the resulting stack to be in byte data format (0-255) At the start of my process the multispectral and pan band images have a no data value of 0. From the multispectral I create the indices I need, then perform a linear percent stretch raster. I also stretch the multispectral ban...
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by Morgan Bond23 Sep 2020 09:21 AM |
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1 Replies and 185 Views
Stretch error with large raster 185 1
Started by Morgan Bond
I have a large raster (42212 x 232880, unsigned integer pansharpened WV-3 image strip, saved as an ENVI .dat file) that I would like to convert to byte data with a square root stretch. When I choose 'stretch data' and choose 'equalize' or 'square root', by percent, with output values from 0-255, I get an error: 'stretch_doit: An error has occurred during processing Error: 'attempt to subscript IN_HIST with LOC is out of range' The result may be invalid'. If I select ok, the process ends and...
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by Jason Wolfe28 Aug 2020 01:42 PM |
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6 Replies and 818 Views
Projected raster envi 5.1 818 6
Started by Diego Diaz
Hi, can someone tell me how can i do something like (In Envi 4.7) Map--> Convert map projection in Envi 5.1 I guess that i must use the projected raster tool, but the problem is that i have a custom datum that i want to use. In Envi 4.7 i just add the datum to the datums text file, but in Envi 5.1 it doesn´t work.
Actually what i want is to project from UTM WGS84 29 to ED1950 UTM 30, i should use the NTv2 grid to perform the transformation, i have found a folder in the exelis direct...
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by ANINDITA MOHANTY26 Aug 2020 01:11 AM |
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3 Replies and 753 Views
FLAASH Aerosol extraction from MOD02HKM 753 3
Started by Firas Haddad
Dear friends,
I am trying to use FLAASH to extract the Aerosol Optical Depth (AOD) from MOD02HKM (MODIS L1B product) at 500 m resolution. When setting the parameters for the aerosol retrieval it runs well but there is no aerosol output file!
Does FLAASH only correct the image for the aerosol without extracting a separate estimated aerosol layer Has anyone tried extracting aerosol from MOD02HKM using FLAASH
Thanks,
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by Samuel Akinnusi10 Aug 2020 11:13 AM |
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0 Replies and 187 Views
Create Confusion Matrix with a classified SNAP image 187 0
Started by Crismeire Isbaex
Hi. I have an RF classified image on SNAP. However, SNAP does not have the confusion matrix calculation. In what format (file) does ENVI accept opening in the Matrix of confusion with truth Roi It is possible The message I get is that ENVI accepts only one image classified in ENVI. What steps do I have to take before the confusion matrix at ENVI Thank you for your help.
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10 Aug 2020 07:52 AM |
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2 Replies and 797 Views
FLAASH Aerosol retrieval setting for LANDSAT7 and Landsat8 797 2
Started by Rajesh Singh
Dear users,
In the Kaufman-Tanre Aerosol Retrieval tab, set the Maximum Upper Channel Reflectance and the Reflectance Ratio values. These settings identify dark pixels used for the visibility estimate. Recommended values are assigned automatically by choosing one of the options under the Defaults drop-down list. Here are some further tips for setting these values:
Only define channels for the processing that is being requested. For example, if you are requesting an aerosol retrieval but not...
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by Samuel Akinnusi09 Aug 2020 03:18 AM |
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0 Replies and 626 Views
Single Class Models in Deep Learning 1.1 626 0
Started by Brad Maguire
Hello,
I upgraded to ENVI 5.5.3/Deep Learning 1.1 from ENVI 5.5.2/Deep Learning 1.0 on June 7.
I have been unable to reproduce results that I had achieved with DL 1.0 with DL 1.1. My single class results under DL 1.0 were very good but using the same* parameters as I did with the DL 1.0 model, I am unable to obtain a classification. The entire test area is now classified or unclassified.
After a lot of trial and error, I obtained a single class result, but only by increasing the a...
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23 Jul 2020 06:03 PM |
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0 Replies and 256 Views
Possible Explanation for Different Linear Spectral Unmixing Results? 256 0
Started by Krista West
Hello, I'm reaching out to ask if there is a known error or if anything has changed within ENVI 5.5.3 IDL 8.7.3 (64-bit) that would affect linear spectral unmixing (LSU) results between June 10, 2020 and July 15, 2020. Since June 10, I have been working with the same endmembers (12 single pixels saved as 12 separate ROIs for bare soil and vegetation types), the same two spectrally and spatially subset Landsat 8 images, and I always apply a unit sum constraint of 1.0. For each run, I output...
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15 Jul 2020 06:41 PM |
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0 Replies and 254 Views
SARAcape intensity workflow error 254 0
Started by Jose Manuel Lattus
Hello! I’m trying to perform the workflow of intensity in SARSCape and it have an error in the coregustration steps. I’m using sentinel 2 ... all scenes 2020 till July 5th. Could be a trouble with the orbital correction The message ir: FILE INCONSISTENCY (EC: 40001) COREGISTERED IMAGE (25/35) Thanks jmlattus
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12 Jul 2020 07:51 AM |
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3 Replies and 376 Views
ENVI 5.3 - Crash on Startup 376 3
Started by Charles Swanson
ENVI 5.3.1 32- and 64=bit fails to launch, showing warning ' JSON_PARSE: Invalid string, no closing ''' ' before aborting. When ENVI is launched with IDL, IDL will open properly but ENVI never fully opens past the splash art, and doesn't display an error in this case. I have already tried both repairing and reinstalling the software, and rebooting the PC. This first became an issue on Wednesday, June 10th. PC specs: Processor: Intel(R) Xeon(R) Gold 5120 CPU 2.20GHz, 2195 Mhz, 14 Core...
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by ANINDITA MOHANTY04 Jul 2020 05:18 AM |