X
Search this forum:
Search
You are not authorized to create a new topic
Page 32 of 137 << < 3031323334 > >>
Topics
 Replies
 Views
 Last Post
3 Replies and 1596 Views Exporting ENVI format to Multispectral GeoTiff Loses Multispectral Bands (ENVI 5.2)  1596  3 Started by  Deleted User I created a seamless mosaic of two Landsat 4 scenes and another mosaic of two Landsat 8 scenes. I originally exported both mosaics in ENVI format. When I later saved the Landsat 4 to a GeoTiff if behaved as expected, and output a multiband GeoTiff with the same appearance as the mosaic. When I attempt this with the Landsat 8 mosaic it always outputs a panchromatic GeoTiff. Is there something I am missing or a difference between the sensors where you cannot save Landsat 8 mosaics to GeoTiff, if y...
3 1596
12 Mar 2015 10:46 PM
1 Replies and 2465 Views Attempt to call undefined procedure/function: &39;ENVI_PROJ_CREATE&39; IDL  2465  1 Started by  Deleted User I've run into a problem when calling ENVI_PROJ_CREATE from and IDL procedure. I use ENVI5.1 IDL8.3. Here is the code: pro test_batch_modis_conversion_l2_swath compile_opt idl2 modis_swath_file = 'C:\MCTK_Input\MYD04_3K.A2002247.0300.006.2014195232718' ;The specified output location MUST end in the appropriate path ;separator for your OS output_location = 'E:\Downloads\Aerosol retrieval' output_rootname = 'test' swath_name = 'mod_3k' sd_names = &91'Opti...
1 2465
12 Mar 2015 02:02 AM
1 Replies and 1620 Views Error launching Build Mask tool  1620  1 Started by  MariM When I launch the Build Mask tool from ENVI, I get this error message: "An error was caught in the main event handler. Error: Variable is undefined: FID." How do I resolve it
1 1620
11 Mar 2015 10:57 AM
2 Replies and 1529 Views Decorrelation stretch  1529  2 Started by  Deleted User Can I apply decorrelation stretching on thermal bands of ASTER If yes, then should I use the technique on the radiance value or the thermal emissivity value Please help.
2 1529
11 Mar 2015 05:41 AM
2 Replies and 1392 Views bad lines  1392  2 Started by  Deleted User after applying flag mask correction (hyperion tool) some bad lines are still present.how to remove these bad lines(manually).
2 1392
11 Mar 2015 12:42 AM
1 Replies and 1181 Views Simple Maximum value filter  1181  1 Started by  Deleted User Hi, I am trying to do a very simple maximum value filter in ENVI to highlight areas of interest but the only option appears to be the median value. Is there a way to create a filter that applies the maximum neighbourhood value. Thanks, Amanda
1 1181
10 Mar 2015 06:10 AM
1 Replies and 1459 Views Applying a mask to uniformize colors  1459  1 Started by  Deleted User Dear support team, I want to make a mosaic with Landsat8 images for my country and I have images from different periods of vegetation. I tried to uniformize the colors with Enhance-Histogram Matching but the are not such great results. Is there another way to standardize, to make a level for all the images Thanks for your time.
1 1459
10 Mar 2015 01:42 AM
1 Replies and 1436 Views along track destriping.  1436  1 Started by  Deleted User some bad lines in my hyperion data.how to remove bad lines.
1 1436
09 Mar 2015 07:08 AM
1 Replies and 1886 Views DEM Extraction  1886  1 Started by  Deleted User I get the following error message when using DEM Extraction Wizard 'Subscripts are not allowed with object properties'. I did not get the message a couple of days ago. Andy
1 1886
09 Mar 2015 06:18 AM
1 Replies and 1623 Views demo  1623  1 Started by  Deleted User Hello ! can i have a demo of 5.2 envi
1 1623
08 Mar 2015 01:31 AM
1 Replies and 2730 Views Processing order for ASTER L1A Imagery  2730  1 Started by  Deleted User Hi there, I have 14 ASTER LIA Images that I need to process before I can start analyzing them for mineral spectra. However, literature for processing LIA is rare and I find myself perplexed by the order of processing steps to achieve well corrected and calibrated imagery. There are some striping issues with some of the images - the TIR I have managed to destripe using ERDAS software, which was much more robust than what is offered in ENVI, from what I can see. Three SWIR images I will entirely...
1 2730
07 Mar 2015 11:48 AM
4 Replies and 10629 Views error in opening the MTL file  10629  4 Started by  Deleted User Dear Envi Users, I want to open the MTL file in Envi 5.0 Classic from File-Open External File-Landsat-Geotiff with Metadata, I select the MTL file from the specific folder and I get this message : Geotiff metadata File : D:\mozaic\LC81820272013209LGNC00_MTL.txt Problem: An error was encountered reading this file. Error: Array dimensions must be greater than 0 I just downloaded the image, I have not changed anything. I also tried in Envi simple and I get the same error. Could anybody tel...
4 10629
02 Mar 2015 02:01 AM
2 Replies and 2214 Views Cross-validation in ENVI  2214  2 Started by  Deleted User Dear All How to perform k-fold cross-validation or any other form of cross-validation in ENVI 5.0 Is there any tool for doing this or we'll have to perform its steps one by one
2 2214
26 Feb 2015 12:30 AM
0 Replies and 4989 Views Error launching ENVI: Attempt to call undefined procedure: &39;IDLRTMAIN&39;  4989  0 Started by  MariM When I launch ENVIIDL, I get the following error and ENVI does not launch: Attempt to call undefined procedure: 'IDLRTMAIN' How do I solve this Answer: This is caused by a path issue in ENVI/IDL where the application cannot find the files needed to launch ENVI. It could be caused by paths that are missing or paths that have taken precedent over the default application paths. Here are some things to check: In IDL, go to the Preferences->IDL->Paths and make sure the is present and check...
0 4989
25 Feb 2015 08:05 AM
3 Replies and 3330 Views calculation of areas supervised classification - Rois  3330  3 Started by  Deleted User Hello i am using Envi 4.7. I have an image of 1975 from Landsat and i want to calculate the area of buildings, vegetation and sea. After i saved my roi file how can i calculate these areas at my new image Can you describe me the steps because I don't have enough experience with envi. Thank you
3 3330
24 Feb 2015 11:51 AM
0 Replies and 1440 Views Landsat 8 datasets from the southern hemisphere show as north after processing  1440  0 Started by  MariM When I open a Landsat-8 dataset in ENVI 5.2, ENVI reports that the data are in UTM Zone 18N. This is an image of the western coast of Argentina, which is in UTM Zone 18S. This dataset is exactly as it was downloaded from the USGS's Earth Explorer. However, after I calibrate it using Radiometric Calibration, then the header of the output file shows the UTM zone in the "map info" item as 18S, while the "coordinate system string" shows the UTM zone as 18N. What is wrong Answer...
0 1440
24 Feb 2015 10:07 AM
1 Replies and 1594 Views Reclassify Cloudmask in ENVI  1594  1 Started by  Deleted User All, What would be the easiest way to reclassify a slough of single band cloudmasks I have downloaded from the USGS High Level Data Product download Pixels are currently assigned as follows: 0 clear 1 water 2 shadow 3 snow 4 cloud I'd like to designate "Clear" as "1" and everything else as "0". Any thoughts I was considering Band Math but couldn't figure it out. Thanks in advance for any help.
1 1594
23 Feb 2015 05:23 PM
2 Replies and 1541 Views error with Texture_Cooccur_Doit  1541  2 Started by  Deleted User I am building an IDL script to calculate several co-occurrence texture measures and keep getting this error: Attempt to subscript METHOD with is out of range. Execution halted at: TEXTURE_COOCCUR_DOIT 311 ENVI_DOIT 3130 $MAIN$ The input file is a single band of SAR intensity data. Note that when I use an example code from ENVIPROGRAMGENERATOR or for example the online manual for the ADAPTIVE_FILTER, the examples work find but when I change to Texture_Cooccur_Doit and replicate all ...
2 1541
22 Feb 2015 01:51 AM
1 Replies and 2099 Views 5.1 ROI Tool Invalid Object Reference  2099  1 Started by  Deleted User Hello, I have a user that has the following problem I have yet to encounter. After creating a few Regions of Interest ENVI brings up the following warning: "Invalid object reference: )>. After this warning is closed ENVI crashes. Any ideas on what the problem could be Also this software is being run through VMware if that could have any effect. Thanks for your help.
1 2099
20 Feb 2015 02:51 PM
3 Replies and 1632 Views Signal Suppression  1632  3 Started by  Deleted User Good afternoon, I know ENVI has a built in tool for vegetation suppression but I'm wondering if there is a way to do a customized suppression of a different index. The index is similar to NDVI but uses different bands but the math is slightly different or I would just substitute in the bands I need into the vegetation suppression tool. Any ideas
3 1632
19 Feb 2015 11:34 AM
You are not authorized to create a new topic
Page 32 of 137 << < 3031323334 > >>