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1 Replies and 3023 Views
IDL has stopped working error 3023 1
Started by Deleted User
Hi every one,
When I open Envi Zoom, the error occurs as "IDL has stopped working". Envi Classic is still OK. Are there solutions for it I am using Windows 7 64bit.
Kind regards,
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3023 |
by Deleted User 12 Oct 2017 12:15 PM |
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1 Replies and 1742 Views
SVM 1742 1
Started by Deleted User
Can I get to know that how does SVM module in ENVI estimate the probabilities Although, a reference (Wu et al., 2004) has been provided in the help contents but I am unable to follow which method does ENVI implement for this
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1742 |
by MariM11 Oct 2017 12:37 PM |
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2 Replies and 1800 Views
MODIS MOD13Q4N 1800 2
Started by Deleted User
How can I open an hdf MODIS MOD13Q4N in ENVI I can't-do it... ArcMAP open the file with no trouble,
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1800 |
by Deleted User25 Sep 2017 07:50 AM |
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1 Replies and 1500 Views
Management of ALLOW_MULTIPLE 1500 1
Started by Deleted User
Apologies for the basic question, I am new to the ENVI API. I would like to import multiple rasters using SelectInputData(/ALLOW_MULTIPLE). If I have something like this: Flats = UI.SelectInputData(/RASTER, /ALLOW_MULTIPLE, /TITLE 'Select Frames lowest to highest') Is it necessary to then do: L9 = e.OpenRaster(Flats&91;0&93;) L8 = e.OpenRaster(Flats&91;1&93;) L7 = e.OpenRaster(Flats&91;2&93;) Because the input to OpenRaster needs to be a scalar string, which the Fl...
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by MariM13 Sep 2017 12:58 PM |
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1 Replies and 1338 Views
Task output with GUI 1338 1
Started by Deleted User
Is it possible to define the output from a task using a GUI, similar to envi_pickfile or dialog_write_image I don't want to change the OUTPUT_RASTER_URI keyword manually each run.
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1338 |
by Deleted User12 Sep 2017 12:02 PM |
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2 Replies and 1721 Views
Raster assignment in band math 1721 2
Started by Deleted User
Hello, I am new to using the ENVI API, but I would like to perform band math using bands from multiple rasters as input. When using the ENVI GUI this is easy to do as I can simply click to assign bands from differing images. I was thinking of creating a large metaspectral raster and combining bands from different images into one large image, but I don't think it would be efficient for what I am trying to do. As an example, I have two 6 band images and would like to process each band us...
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1721 |
by Deleted User11 Sep 2017 05:42 AM |
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14 Replies and 4585 Views
Landsat GeoTiff with xml? 4585 14
Started by Deleted User
Hello,
I've downloaded a Landsat USGS surface reflectance product in GeoTiff format. However, the metadata are not in the usual _MTL format but as an XML file. How does one open this in ENVI
Thank you
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4585 |
by MariM09 Sep 2017 05:48 AM |
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4 Replies and 1943 Views
Using MNF bands in linear spectral unmixing 1943 4
Started by Deleted User
Hi, I read somewhere in the academic literature that you can't use the MNF bands directly in the linear unmixing process and that you should use MNF inverse transformed bands as input Is this true as I haven't seen it mentioned anywhere in the ENVI documentation. Thanks.
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1943 |
by Deleted User01 Sep 2017 02:38 PM |
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1 Replies and 2428 Views
Smile effect correction 2428 1
Started by Deleted User
Dear Sir/mam, How to the correction 'smile effect' in Hyperion data using ENVI software
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2428 |
by MariM28 Aug 2017 10:37 AM |
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2 Replies and 2522 Views
Inverse MNF Transform 2522 2
Started by Deleted User
Hi, I'm using MNF as a dimensionality reduction technique for hyperspectral image classification. I have estimated the noise statistics from the data using a spectrally uniform area, and have output 9 MNF components for use in classifications. I am using endmembers derived from the image (ROIs) for the classifications. I have read in the literature some using the Inverse MNF to transform back to the original data space and number of channels. Am I correct in thinking there is no need to use an I...
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2522 |
by Deleted User24 Aug 2017 08:53 AM |
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0 Replies and 3406 Views
ENVI 5.4 is slow to start on Linux 3406 0
Started by Deleted User
Hi. I manage an installation of ENVI 5.4 and IDL 8.6 on a Linux cluster. The software is installed on six servers, while the license server is on a separate host. When I launch ENVI on the command line, the license is found ok and the splash screen appears, but then it hangs for a long time. Finally after roughly 50 minutes the splash screen goes away and the main GUI appears. Couple other notes: IDL 8.6 starts up within a few seconds, as does ENVI Classic. Modern ENVI is the only thing that ...
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3406 |
23 Aug 2017 01:39 PM |
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5 Replies and 4924 Views
Accuracy Assessment 4924 5
Started by Deleted User
Hi, I have a classified image (Maximum Likelihood) that I want to run an accuracy assessment on, however I am unsure of the correct steps in ENVI. I have done it before in Erdas Imagine where a set of random points is generated and then you determine the 'true' class of each point, which then results in an overall accuracy for the classification. I am using 10m Sentinel imagery to identify the 'true' classes. I have tried the 'Generate Random Sample Using Ground Truth Image' tool using my ...
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4924 |
by Deleted User22 Aug 2017 02:44 AM |
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4 Replies and 2872 Views
Applying a mask when using Support Vector Machine 2872 4
Started by Deleted User
Hi, I am using a mask to mask out areas of NoData, however when I run a Support Vector Machine there is no option to apply a mask and therefore the areas that were previously classified as 'masked pixels' in other classifications (e.g Spectral Angle Mapper) are now classified as a land cover. Is there a way to apply a mask when running a SVM Thanks,
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2872 |
by MariM21 Aug 2017 10:30 AM |
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1 Replies and 1907 Views
FLAASH atmospheric correction 1907 1
Started by Deleted User
Hello, I am beginner in the use of FLAASH atmospheric correction , I want aske, is the atmospheric correction FLAASH includes at the same time radiometric correction, in other words, Flaash atmospheric correction correction is both atmospheric and radiometric correction. thank you a lot.
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1907 |
by MariM17 Aug 2017 01:15 PM |
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0 Replies and 3102 Views
ENVI Crop Science 1.0.1 release 3102 0
Started by Deleted User
I am pleased to announce the release of ENVI Crop Science 1.0.1. This release builds on the crop counting capabilities of 1.0 by adding functionality to identify crop rows and eliminate outlying crops as well as identifying gaps (missing crops) along the rows. There is also a new capability to create a geometry based crop location grid that is a useful alternative to image based crop counting for fields with closed canopies. For more information please visit http://www.harrisgeospatial.com/...
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3102 |
16 Aug 2017 12:02 PM |
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1 Replies and 2067 Views
Using one set of ROIs on multiple raster files for MLC 2067 1
Started by Deleted User
I am working on a large-scale ML classification project that consists of over 100 raster files. Because the files are too large to stitch together and classify as one image, I would like to find a way to create a set of ROIs from one or two rasters that can then be applied to the entire set. Can this be accomplished in ENVI I would imagine the ROIs can be converted to general spectral signatures that can be identified in each raster, but I haven't found a tool that can accomplish this.
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2067 |
by MariM09 Aug 2017 12:15 PM |
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2 Replies and 4334 Views
ENVI 5.4 doesn't start 4334 2
Started by Deleted User
Hi, I've new installed ENVI 5.4.1. on Windows 10 x64 Education (Build 15063). After install ENVI starts and works fine; but in next runs it does not start! In splash screen it give warning: M'Expression must be a scalar or 1 element array ... : <BYTE Array&91;2&93;>' Here is the screenshot: https://i.imgur.com/fRy0YAK.png I've uninstalled and removed all files left behind ENVI install and clear registry. Then installed the ENVI again; but nothing changed! I need your help /...
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4334 |
by Deleted User07 Aug 2017 06:56 AM |
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1 Replies and 2078 Views
Sentinel SAFE format from AWS 2078 1
Started by Deleted User
Hi, I use to download the Sentinel 2 images from Amazon AWS service. You can download a single tile and each single band in jp2k format. However, how can 'reconstruct' the original S2 SAFE format in order to properly open it with ENVI 5.4, instead of open each band singularly. Thanks in advance, Luca
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2078 |
by MariM03 Aug 2017 02:54 PM |
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1 Replies and 2402 Views
How to change Scatter plot style in ENVI 5.3? 2402 1
Started by Deleted User
Normally, the 2D scatter plot like this http://s14.sinaimg.cn/middle/002ajk6hzy6O40b3o5v4d&690 (Open the link, you can see the scatter plot figure). The points appear dense and dark in the figure. However, in other case, they appear sparse and faint, like this http://s5.sinaimg.cn/middle/002ajk6hzy6O40aZBU8e4&690 (Open the link, you can see the scatter plot figure). How to change the style from one to the other Many thanks!
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2402 |
by MariM03 Aug 2017 02:50 PM |
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2 Replies and 2082 Views
Acceso denegado para extensiones 2082 2
Started by Deleted User
Buenas noches, al entrar a la pagina de extensiones, no puedo tener acceso, me sale un mensaje que tengo acceso denegado y que a mi cuenta le falta completar la validacion . Porfavor necesito una ayuda para ver ese tema, hay una extension que me gustaria probar, que es LANDSAT GAPFILL, pero no tengo acceso con mi cuenta, porque segun leo, esta en proceso de validacion, mi cuenta tiene años de creacion. Saludos desde Lima Peru Franklin 'Access Denied - Verification Pending In or...
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by Deleted User02 Aug 2017 02:03 AM |