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6 Replies and 2943 Views
Projected raster envi 5.1 2943 6
Started by Deleted User
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 Deleted User 26 Aug 2020 01:11 AM |
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3 Replies and 2230 Views
FLAASH Aerosol extraction from MOD02HKM 2230 3
Started by Deleted User
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 Deleted User10 Aug 2020 11:13 AM |
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0 Replies and 1720 Views
Create Confusion Matrix with a classified SNAP image 1720 0
Started by Deleted User
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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1720 |
10 Aug 2020 07:52 AM |
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2 Replies and 2505 Views
FLAASH Aerosol retrieval setting for LANDSAT7 and Landsat8 2505 2
Started by Deleted User
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 Deleted User09 Aug 2020 03:18 AM |
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0 Replies and 1869 Views
Single Class Models in Deep Learning 1.1 1869 0
Started by Deleted User
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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1869 |
23 Jul 2020 06:03 PM |
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0 Replies and 1475 Views
Possible Explanation for Different Linear Spectral Unmixing Results? 1475 0
Started by Deleted User
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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1475 |
15 Jul 2020 06:41 PM |
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0 Replies and 1704 Views
SARAcape intensity workflow error 1704 0
Started by Deleted User
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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1704 |
12 Jul 2020 07:51 AM |
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3 Replies and 2279 Views
ENVI 5.3 - Crash on Startup 2279 3
Started by Deleted User
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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2279 |
by Deleted User04 Jul 2020 05:18 AM |
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0 Replies and 1778 Views
ENVIImageIntersectionTask and ENVIBuildLayerStackTask 1778 0
Started by Deleted User
First, I'm reading the manual page for ENVIImageIntersectionTask. There are a few options: one is RESAMPLING, and another is WARPING. Both are optional. My question is: when is warping performed Is it always performed Second, in ENVIBuildLayerStackTask, there is no ability to choose the intersection, as with the (old) ENVI Classic version. The only option here is RESAMPLING. It seems to me that the ENVIImageIntersectionTask may do (except for the actual stacking) something very simila...
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1778 |
24 Jun 2020 01:23 PM |
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3 Replies and 1949 Views
Linear Spectral Unmixing & Unit Sum Constraints in ENVI 5.5.3 (64-bit) 1949 3
Started by Deleted User
Hello, I am hoping to obtain additional clarification regarding Linear Spectral Unmixing, particularly when setting a unit sum constraint of 1.0. I am working with Landsat 8 OLI surface reflectance data acquired over southern California within the past year, and my goal is to determine fractional cover values of three land cover types. Here are the steps I have followed: I imported my Landsat data and resized (subset) my scene to my area of interest. I kept all seven bands -- Coastal, Blue...
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by Deleted User23 Jun 2020 06:17 PM |
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0 Replies and 1630 Views
Evapotranspiration mapping using ENVI 1630 0
Started by Deleted User
I am trying to do evapotranspiration mapping using ENVI. Does anyone have idea or is it possible in ENVI.
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1630 |
23 Jun 2020 08:26 AM |
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2 Replies and 1311 Views
ENVI Modeler - Linear Spectral Unmixing 1311 2
Started by Deleted User
Hello, I am attempting to create an ENVI Modeler project so that I can eventually customize and automate parts of the Linear Spectral Unmixing process. I would like to begin by working with a single raster file and regions of interest that I have already created (to be used as endmembers), and then I hope to view the output in such a way that I can more easily analyze the fractional cover output values for certain pixels within the image. Is there an example I can follow to help me choose basi...
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by Deleted User22 Jun 2020 03:07 PM |
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1 Replies and 1425 Views
ENVI PyEngine on Windows 10 1425 1
Started by Deleted User
Hello, I am attempting to run the envipyengine on widows 10 OS. I installed it via pip. I was following the basic setup and test from the directions here: https://envi-py-engine.readthedocs.io/en/latest/ I executed the basic config: >>> envipyengine.config.set('engine', ) with is the directory containing taskengine.exe But just trying to get the available tasks throws a Permission &91;WinError 5&93; error (paths shortened for readability): >>> from envipyengine import Engine >>>...
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by Deleted User21 May 2020 02:03 PM |
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4 Replies and 1276 Views
ASTER TIR Emmisivity 1276 4
Started by Deleted User
Hello! I read some issues about this and I find 2 answers in the forum, so to calculare Emissivity in ASTER L1T Images 1. Apply Radioetric Calibration for Radiance TIR Images --> Execute Thermak Atmospheric Correction --> Calculate Emissivity 2. 1. Apply Radioetric Calibration for Radiance TIR Images --> Calculate Emissivity wich will be better Jose Manuel
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by MariM20 May 2020 05:23 AM |
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3 Replies and 2066 Views
GDAL virtual raster 2066 3
Started by Deleted User
Hi Can ENVI or IDL open GDAL virtual raster If not will it be implemented in a near future see https://gdal.org/drivers/raster/vrt.html Regards /Jonas Ardö, Lund University, Sweden
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by MariM11 May 2020 01:14 PM |
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6 Replies and 2660 Views
Mask Error in ENVI 5.3.1 2660 6
Started by Deleted User
Dear All, I am trying to mask a stacked image (22 GB size) and when I try to do the Band Threshold to ROI and apply Min Thresh Value, it gives me an error saying 'Unable to allocate memory:to make array' The result may be invalid. My computer has 64GB of RAM (Intel Xenon (R) Silver 4114 CPU 2.20 GHz, 10 cores. Kindly help me with this.
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by Deleted User16 Apr 2020 08:53 AM |
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1 Replies and 1885 Views
Radiometric Calibration 1885 1
Started by Deleted User
Hi, I'm trying to apply a radiometric calibration. However, it keeps failing. A message stating 'ENVI Error Calibration Processing Failed' keeps coming up. I was able to do this with the other dataset I'm working with. I've also restarted my computer and ENVI. I also opened a new file, but it is still not working.
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by MariM16 Apr 2020 08:06 AM |
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0 Replies and 1754 Views
Co-occurence texture - question about correlation 1754 0
Started by Deleted User
For the co-occurence (2nd order) texture calculations, how is correlation handled when the window and shifted window have all the same binned values (i.e. all 1's) Given the formula for correlation, you cannot calculate correlation because there is 0 variance. It appears from testing in ENVI that a value of exactly 1.0 is returned for this case (although I could be wrong). Other software I've used will return a nodata value. If indeed this is a choice by ENVI software developers to insert ...
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1754 |
15 Apr 2020 08:12 AM |
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1 Replies and 1455 Views
ENVI freezes when exporting ROIs to .csv 1455 1
Started by Deleted User
I'm working with ENVI 5.5 and trying to export some data from a single ROI to a csv. Every time I try, though, a file with the chosen name is created but stays at 0 KB size and the program freezes without completing the task.
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by MariM03 Apr 2020 06:27 AM |
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2 Replies and 2184 Views
Scene Average Ground Elevation 2184 2
Started by Deleted User
I am trying to run FLAASH on Sentinel 2 and Landsat imagery. One of the input parameters is 'Ground Elevation (km)'. Can anyone suggest where I can find the scene elevation for Sentinel 2 and Landsat. I have looked through MTD and MTL documents but I cannot find the scene ground elevation. Is that something I have to calculate
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2184 |
by Deleted User18 Mar 2020 03:55 PM |