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0 Replies and 1913 Views
Moon projection 1913 0
Started by Deleted User
hi,
&160;&160;&160;&160;&160;&160; Is there any projection system&160; in ENVI for the lunar images . i want to do projection for the lunar image obtained from Clementine mission. I am having the four corner coordinates of each image, but if i create sinusoidal projection with radius 1737400.00 it is not upto the mark. Suggest me how to do a perfect lunar projection.
&160;
&160;&160;&160;&160;&160; ENVI will come up with Lunar projection module
&160;
&160;
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0 |
1913 |
15 Sep 2009 01:29 AM |
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0 Replies and 1267 Views
georeferencing MODIS L1b ENVI Batch mode 1267 0
Started by Deleted User
Hi all, I am seriously hoping someone out there can help me with
this . &160;I am trying to georeference MODIS L1B hdf files using envi
batch mode. I found a bit about this on the net (particularly the
Ocean Color forums and in here for other instruments) and have tried to emulate their method, although as they wern't using L1B, I think I am encountering some sort of additional issue.
What I have so far is pasted below. This actually does output a
georeferenced-looking file,...
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1267 |
10 Sep 2009 07:28 AM |
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2 Replies and 1333 Views
Positive reflectance values with FLAASH 1333 2
Started by Deleted User
Hi,
is it possible to get positive values of reflectance after FLAASH atmospheric correction for ASTER data
I understand that the inverse case is possible when low radiance values are present in the scene.
I'm working over glacier surface so I presume that the sensor could be saturated with fresh snow.
Thank you all.
PZ
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2 |
1333 |
08 Sep 2009 05:05 PM |
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1 Replies and 1066 Views
Georeferencing 1066 1
Started by Deleted User
Hi,
I'm only a beginner and I have no idea how I can see the difference between a georeferenced and non-georeferenced image. I have two images 1 from 1988 and the other one is from 1997.
I looked at the map info, but no idea where I’m looking at..
Could someone please help me.
Cheers,
Milou
&160;
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1 |
1066 |
08 Sep 2009 12:00 AM |
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0 Replies and 1278 Views
set projection 1278 0
Started by Deleted User
Dear all,
I have a field spectrometer data for urban features, I had finished established the spectral library for the each feature and mean all the spectral.
However the data still not have the right projection yet. Referring to this problem, how I will set the projection to that data and how I will use that data in establishing the training area
I had tried to set by using edit envi header but its not working. Field spectrometer data in vector format, do I need rasterizing the data first...
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0 |
1278 |
05 Sep 2009 10:06 AM |
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0 Replies and 1308 Views
QB Tiled images not appearing in ENVI Orthorectification Layout manager 1308 0
Started by Deleted User
&160;
We are running a trial of the ENVI rigorous orthorectification module.
Adding images (QB tiled products) results in showing the image file names and dem file name in the Orthorectification Wizard but not in the Layout manager, appears although the adding input images dialog will end normally reporting OK for the two images.
If we continue the process without GCPs, Tie Points, in step 4 the error of not recognizing images will appear :
Images in Project and Images is wizard do not mat...
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1308 |
04 Sep 2009 07:28 AM |
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0 Replies and 1315 Views
How to reduce decimal points in my raster? 1315 0
Started by Deleted User
Guys,
Really need your help. Been stuck with this issue for quite sometimes.
I have raster images (floating, with 7 decimal points e.g value for a pixel is 34.1234567).
How do i reduce the decimal points to 2 decimal points e.g 34.12.
Is there any ways doing it in ENVI 3.6
Thank you.
Regards.
Idham
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0 |
1315 |
02 Sep 2009 05:58 PM |
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2 Replies and 1523 Views
Themis RDR qub files and envi difficulties 1523 2
Started by Deleted User
Normal
0
false
false
false
MicrosoftInternetExplorer4
Hello,
&160;
I have a Themis RDR .Qub file that I have successfully inputted into Envi (without having to use isis). I've run Thermal Atmospheric corrections and, in a separate process, emissivity. the only problem is that the z-profile emissivity is not restricted to the range of 0 - 1, I have values that are negative, and some that range as high as 5.1&160; I've been trying to think of reasons f...
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2 |
1523 |
01 Sep 2009 08:05 PM |
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0 Replies and 1366 Views
MWIR - reflective component 1366 0
Started by Deleted User
What tools can I use in ENVI to eliminate the emission component of a midwave-infrared band (3-5 micrometers) so that I just have the band reflectance Any feedback will be greatly appreciated.
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0 |
1366 |
31 Aug 2009 03:13 PM |
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2 Replies and 1579 Views
How to use MOSAIC_DOIT, /GEOREF 1579 2
Started by Deleted User
I'd like to see an example of MOSAIC_DOIT.
In online help, I can see the pixel based MOSAIC_DOIT example.
I want to know how to use this routine in georeferenced mosaic.
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2 |
1579 |
by Deleted User 31 Aug 2009 02:54 PM |
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0 Replies and 1992 Views
Topographic correction 1992 0
Started by Deleted User
Dear all
&160;
Can anyone offer me some advice on how to perform topographic corrections on ENVI 4.5, so far I have only found that the logaritmc calibration produces some topographic correction over the image but I am looking for something more specific on which I can used the DEM of my study site.
&160;
Thank you
&160;
S
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0 |
1992 |
31 Aug 2009 08:23 AM |
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7 Replies and 1829 Views
ALOS AVNIR2 orthorectification 1829 7
Started by Deleted User
Hello all,
I'm trying to clariy a couple of things about ALOS AVNIR2 scene orthorectification,
1. From the ENVI help someone can read :
The along track incidence angle is the angle (in degrees) between the vertical position of the satellite and its forward or backward viewing direction. If viewed from the ground point corresponding to the scene center, the along track incidence angle has a positive value if the viewing direction is northward.
The across track incidence angle is the angle ...
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7 |
1829 |
31 Aug 2009 06:26 AM |
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0 Replies and 1631 Views
User interaction, i.e. creating new wizards with IDL 1631 0
Started by Deleted User
All,
I am developing an IDL/ENVI program where I would like to have user interaction through the ROI tool. Basically, the code create a ROI that need to be validated by&160;a user before the code can proceed further.
Is it possible to develop&160;something similar to the wizard tools already in ENVI Otherwise, is it possible to pause the execution of an IDL code while the user update the ROI
Thanks,
Vince
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0 |
1631 |
27 Aug 2009 12:40 PM |
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0 Replies and 1133 Views
Registration problem 1133 0
Started by Deleted User
We have IKONOS which took image at 90 degree and THEOS which took image at 30 degree. When we do the GCP registration, we found that the image on land is overlap but on the mountain it is not exactly hte same point. (do not be overlap each other) Anybody can help me
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0 |
1133 |
26 Aug 2009 09:09 PM |
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1 Replies and 1253 Views
LANDSAT atmospheric correction 1253 1
Started by Deleted User
Dear all,
I am trying to atmospherically correct LANDSAT5 TM and ETM images for a underwater and land cover mapping . I have 2 questions and hopefully someone can give me a light.
1) For TM, I am able to calibrate it and even run the atmospheric correction in flaash module. Nonetheless, as I understand the resulting file should be without units and between 0 and 1 (reflectance) but this is not the case.
2) For the ETM image, I can not even run the calibration. I edit the hea...
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1 |
1253 |
24 Aug 2009 10:17 AM |
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2 Replies and 1529 Views
out_name 1529 2
Started by Deleted User
I would like to read everything in my input folder and output everything to a new folder using the code below. However, I am not sure how to change out_name to get it to do this and if I am doing the correct thing in reading all the files in.
pro outputtoexternalfile
FORWARD_FUNCTION ENVI_OPEN_DATA_FILE&160;
compile_opt strictarr&160;
ENVI, /RESTORE_BASE_SAVE_FILES
;envi_batch_init, log_file='E:\FinalProcessing\GrassValley_Slide\burn_indices\batch.log'
;set up path t...
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2 |
1529 |
19 Aug 2009 12:20 PM |
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3 Replies and 1353 Views
MATH_DOIT more than two bands 1353 3
Started by Deleted User
I am using MATH_DOIT for processing some indices (see code below). This has worked fine with an equations with only two bands but I cannot get equations with three bands to work. I keep receiving an error:
Error: "Attempt to subscript FID with I is out of range"
Additionally is there anyway I could process more than one equation at a time and assign them different names
&160;
&160;
pro bandmath_CSIT
compile_opt idl2
input_path = 'E:\FinalProcessing\GrassValley_Slide\g...
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3 |
1353 |
19 Aug 2009 11:17 AM |
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1 Replies and 1716 Views
ENVI_OPEN_DATA_FILE,/MODIS 1716 1
Started by Deleted User
I have opened a MODIS data file (HDF format) with ENVI_OPEN_DATA_FILE,/MODIS. When I want to close and delete it, it says "Permission denied". I don't know why. Could you help me The pro code is as follows:
Pro test
&160; fname='D:\MOD021KM.A2008291.0420.005.2009175164914.hdf'
&160; ENVI_OPEN_DATA_FILE, fname ,/MODIS, r_fid=fid
&160; fids = ENVI_GET_FILE_IDS()
&160; For t = 0, n_elements(fids) - 1 do begin
&160;&160;&160; ENVI_FILE_MNG, id=fids&91t&93, /remove...
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1 |
1716 |
19 Aug 2009 02:52 AM |
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0 Replies and 1517 Views
ENVI batch - input/output folders 1517 0
Started by Deleted User
I would like to do something incredibly simple using ENVI batch but cannot find an example and everything I try does not work.
I would like to process all files in a folder, without needing to specify any part of the filename and then following processing steps I would like to output them all to a different folder without having to change their filenames.
Any feedback will be greatly appreciated!
&160;
&160;
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0 |
1517 |
18 Aug 2009 06:44 PM |
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4 Replies and 1691 Views
ENVI to ArcMap 1691 4
Started by Deleted User
What is the best way to export an image from ENVI to ArcMap without losing the values and projection Thanks
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4 |
1691 |
18 Aug 2009 09:55 AM |