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1 Replies and 1157 Views
spectral unmixing 1157 1
Started by Deleted User
Hi
I am looking for an option in which i can mix more than 3 mineral spectral signatures in various proportion to quantify the rock composition
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1 |
1157 |
01 Nov 2011 11:15 PM |
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2 Replies and 1793 Views
ENVI_FILE_MNG - not working? 1793 2
Started by Deleted User
I am working on a memory-use intensive piece of code for various processing of Landsat tiles. I'm attempting to clean up after my file use in the code, to make room for further processing along the way. When I use ENVI_FILE_MNG (with the /REMOVE option) to close files, they remain in the 'Available Band List' of ENVI - and hence, take up precious memory (correct). Is there something else I should be doing, to remove these files from memory Thanks.
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2 |
1793 |
01 Nov 2011 01:17 PM |
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0 Replies and 1193 Views
Introducing Exelis Visual Information Solutions, Inc. 1193 0
Started by Deleted User
I would like to take this opportunity to inform the IDL, ENVI, and E3De user communities about our new name. This past January, ITT Corporation announced it would be spinning its business into three standalone companies. With this change our parent company, formerly, ITT Defense & Information Solutions will become Exelis, Inc. and ITT Visual Information Solution will become Exelis Visual Information Solutions, Inc.
While our name will change, our commitment to providing you with world-class p...
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0 |
1193 |
31 Oct 2011 10:24 AM |
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3 Replies and 1425 Views
Using FLAASH with WorldView 2 imagery 1425 3
Started by Deleted User
Hello,
I'm at the stage where I have my WV2 imagery in in BIL format and I wish to apply the FLAASH atmospheric correction (in ENVI 4.2) however I cannot seem to find the file that is I am being prompted for that asks enter 'ASCII file containing wavelengths and fwhm'. Any ideas at this point would be a great help.
Thanks.
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3 |
1425 |
25 Oct 2011 03:17 PM |
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3 Replies and 1151 Views
Lidar Toolkit? 1151 3
Started by Deleted User
Hi,
I have ENVI 4.8 and I'm curious about the lidar tooklit. Is that now a standpart of ENVI or is that a seperate download
Currently, if I go to: Window-->Start Lidar Viewer, this looks like this could be the Lidar toolkit but I've seen seperate screenshots where there is a Lidar menu under the main ENVI menu, which makes me think this isn't the toolkit.
Is the Lidar tooklit standard and if not how does one go about getting it
Thanks
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3 |
1151 |
23 Oct 2011 04:05 AM |
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4 Replies and 2113 Views
Attempt to call undefined procedure - ENVI_PROJ_CREATE 2113 4
Started by Deleted User
I've run into a problem when calling ENVI_PROJ_CREATE from and IDL procedure.
Here is the code:
ENVI, /RESTORE_BASE_SAVE_FILES
ENVI_BATCH_INIT ;, Log_File = logname
ENVI_BATCH_STATUS_WINDOW, /OFF
datum = 'North America 1983'
OUT_proj = ENVI_PROJ_CREATE(DATUM=datum, /GEOGRAPHIC)
Here is the output.
IDL> glsea2_var_smi_composite, 'MODIS', 'Michigan', 2002, 'chlor_a'
Compiled module: GLSEA2_VAR_SMI_COMPOSITE.
Attempt to call undefined proced...
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4 |
2113 |
22 Oct 2011 03:08 PM |
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1 Replies and 1225 Views
descarga envi 1225 1
Started by Deleted User
hola...
me gustaria descargar el envi en cualquiera de sus versiones pero siempre me sale que no tengo acceso a esta pagina q puedo hacer.
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1 |
1225 |
20 Oct 2011 03:57 PM |
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2 Replies and 1416 Views
ROI to ASCII, band values reported that don't match image overlay 1416 2
Started by Deleted User
In order to determine the pixel value for multiple bands of an image at different point locations, I opened a shapefile of the points- saved as EVF file- exported to ROI file and then from that ROI file selected Output ROI to ASCII. However in the ASCII file, the values that are reported for the bands don't always match what I see in the image overlaid with the points determined by cursor location. Specially there are some points that should obviously have a band value of 0 but instead a value...
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2 |
1416 |
20 Oct 2011 09:04 AM |
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1 Replies and 1323 Views
buffering a mask by pixel count 1323 1
Started by Deleted User
Hi,
I created a cloud mask with values of 1 (cloud mask) and 0 for background. I would like to buffer by 3 pixels the cloud mask. Is there a way that I could do this
thank you very much for any advice,
Andrés
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1 |
1323 |
19 Oct 2011 11:23 AM |
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3 Replies and 1419 Views
Quickbird in FLAASH - Invalid values 1419 3
Started by Deleted User
Hi everyone! I´m trying to apply an atmospheric routine with FLAASH (ENVI 4.5) in a Quickbird image. The scene has just benthic substrate (covered by water) and a few small islands. Because of this, I´m using the Maritime Aerosol Model. I have used different "Visibility Initial" values, but in all cases the values are very low. Even, in the best result, red and IR bands have almost all pixels with negative values. Does anyone know the reason Any advice
Thank you!
...
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3 |
1419 |
19 Oct 2011 09:24 AM |
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5 Replies and 1565 Views
Enhanced vegetation Index for SPOT VGT s10 1565 5
Started by Deleted User
Hi All,
I calculated the Enhanced vegetation Index (EVI) with Band math on SPOT VGT s10 but have a strange result.
>> The values under by cursors on the EVI band image shows values like -40, 0.1,...
(Range of EVI is -1 to 1), the min/max plot statistics show values from -40 to 146...
I computed it by;
2.5 *( (float(B4)-B3)/(B46*float(B3) - 7.5 *float(B1)1) )
Thank you
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5 |
1565 |
18 Oct 2011 04:29 PM |
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0 Replies and 991 Views
Announcing E3De 991 0
Started by Deleted User
Introducing E3De™, an interactive geospatial software environment that allows you to create powerful, photorealistic 3D visualizations and easily extract important features and products from LiDAR data.
http://www.ittvis.com/ProductsServices/E3De.aspx
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0 |
991 |
14 Oct 2011 12:15 PM |
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1 Replies and 995 Views
Check for available license in batch mode. 995 1
Started by Deleted User
Hi.
I am writing code to batch process files. If I start ENVI by calling
ENVI_BATCH_INIT, /NO_STATUS_WINDOW
and there is no available floating license, then a dialog window appears, and execution halts. Is there a way in which I can ask if there is a (floating) license available, so that I may return an error code instead of getting the dialog In the batch processing flowline that I am developing, there is no user that can see the dialog.
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1 |
995 |
14 Oct 2011 07:46 AM |
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1 Replies and 1560 Views
Flaash Module Help 1560 1
Started by Deleted User
I am working on Atmospheric correction of Landsat ETM image (Path= 150, Row= 37) using FLAASH module of ENVI software. When i input Radiance image, ENVI software prompt "Enter ASCII file name containing wavelengths and FWHM". Can any one tell how to create this file FWHM values for Landsat ETM image is same for all or different for every Landsat ETM image How can i get these values
Also tell how to get "Flaash Parameter Template File" which is the requirement of Flaa...
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1 |
1560 |
12 Oct 2011 02:04 AM |
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0 Replies and 1052 Views
Flaash Module Help 1052 0
Started by Deleted User
I am working on Atmospheric correction of Landsat ETM image (Path= 150, Row= 37) using FLAASH module of ENVI software. When i input Radiance image, ENVI software prompt "Enter ASCII file name containing wavelengths and FWHM". Can any one tell how to create this file FWHM values for Landsat ETM image is same for all or different for every Landsat ETM image How can i get these values
Also tell how to get "Flaash Parameter Template File" which is the requirement of Flaa...
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0 |
1052 |
12 Oct 2011 02:04 AM |
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1 Replies and 1253 Views
Print Screen problem 1253 1
Started by Deleted User
i am trying to copy an open window of ENVI with Ctrl, Shift, Print Screen. I have done it on other windows with ENVI and it works.
However i am trying to copy a zoom window and it will not copy it to my clipboard. I have tried other image zoom windows from other images and it works fine. Any ideas what could be stopping this particular image from being copied.
Thanks in advanced
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1 |
1253 |
11 Oct 2011 04:28 PM |
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6 Replies and 1943 Views
FLAASH: Azimuth Angle 1943 6
Started by Deleted User
Hi, I need help to set my geometry parameters in FLAASH using Worldview2 and Quickbird data.
I have read on the FLAASH guide that “The azimuth angle is defined as the azimuth (the angle between the line of sight and due North) of the sensor as viewed from the ground. This angle is arbitrary for nadir-viewing sensors. Azimuth values must be between -180 and 180 degrees. For example, if your azimuth from the sensor is 90 degrees (due east), then the azimuth from the ground is -90 degree...
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6 |
1943 |
11 Oct 2011 12:22 PM |
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1 Replies and 1626 Views
SarScape for Mac OS 1626 1
Started by Deleted User
Hello, I would like tu know if there is an available version of SarScape for Envi 4.7 for Mac OS.
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1 |
1626 |
11 Oct 2011 11:44 AM |
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2 Replies and 980 Views
Masking Specific Values 980 2
Started by Deleted User
Hi there,
Just wondering if it's possible to create a mask based on pixel values. I'm working on a quickbird image and i've calibrated the pixels to top of atmosphere reflectance. I want to create a mask to mask pixels with NIR (Band 4) reflectance over 0.3. can this be done in ENVI I've tried building a mask using Build Mask function but it doesn't seem to allow specific band value inputs.
can i do it with band math something like If NIR > 0.3 assign a value of 0 to the pi...
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2 |
980 |
10 Oct 2011 10:32 PM |
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1 Replies and 1383 Views
Spectral Analyst User Functions? 1383 1
Started by Deleted User
Has something changed in ENVI 4.7 and 4.8 with regards to adding user functions I've tried expanding Spectral Analyst with my own matching functions and encountered problems. So I tried plugging in the "irsadist_func.pro" provided in the ~envi48\lib directory as discussed in the help documentation and encountered the same problem. The listing that I get in the IDL command history window is:
Restored file: ENVI.
Restored file: ENVI_M...
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1 |
1383 |
09 Oct 2011 12:11 PM |