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0 Replies and 1095 Views
Helping for writting exp in the Band math window 1095 0
Started by Deleted User
Normal
0
false
false
false
EN-US
JA
AR-SA
MicrosoftInternetExplorer4
I have a problem to write a expression on the band math for create veg...
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1095 |
27 Dec 2009 07:22 AM |
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0 Replies and 1222 Views
start envi47 on ubuntu 1222 0
Started by Deleted User
Welcome everyone. I have installed successfully envi47 on ubuntu, but I do not know how to launch it. Hope everybody help me. Because I'm a newbie.
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0 |
1222 |
22 Dec 2009 11:29 PM |
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0 Replies and 1355 Views
opening filter in batch mode 1355 0
Started by Deleted User
dear all,
as the subject says...i am trying to use the morph_doit in envi_batch mode. i have got images, containing pixel values of 0 and 1. now, i want to do the opening filter with a kernel of 3 and 2 cycles. my script:
&160;pro opening_filter2
compile_opt STRICTARR
&160; ;
&160; ; First restore all the base save files.
&160; ;
envi, /restore_base_save_files
&160; ;
&160; ; Initialize ENVI and send all errors
&160; ; and warnings to the file batch.txt
&...
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0 |
1355 |
18 Dec 2009 01:59 AM |
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0 Replies and 1133 Views
ENVI EX Segmentation 1133 0
Started by Deleted User
After a softeware crash, is there any way to restart a feature extraction workflow at the merge stage rather than the segmentation stage with the regionmeans file&160; Or at the Computing Attributes stage with the mergedregionmeans file I don't really want to start from scratch again.
Can anyone tell me what the RegionMeansLabel file is
Thanks.
Steve
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0 |
1133 |
14 Dec 2009 08:44 PM |
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2 Replies and 1884 Views
Negative position argument not allowed... 1884 2
Started by Deleted User
Hi,
What does this error message refer to, and what do I do about it
It comes up when I am trying to use ROIs for an ENVI standard file. there appear to be no projection issues as the ROIs appear in the correct locations - there could still be issues of course.
I am at a loss, anyone got any ideas
Many thanks,
Martin
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2 |
1884 |
13 Dec 2009 06:55 PM |
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0 Replies and 1495 Views
ENVI Statistics File 1495 0
Started by Deleted User
I am creating a simple tool to extract the eigenvectors from a statistics file (*.sta) but want to include wavelength information. ENVI_GET_STATISTICS will provide the band numbers used, but not the wavelengths. If I open the *.sta file in a text editor, I can see the full filename (and path) that was used when calculating the statistics. Also, if you use "View Statistics File" in ENVI, the first piece of information in the textbox is the filename. Is anyone aware of a way to get this ...
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0 |
1495 |
11 Dec 2009 02:47 PM |
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1 Replies and 1070 Views
Masking ! Help me 1070 1
Started by Deleted User
Can you help me about masking in Envi Can You guide about Use Thanks
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1 |
1070 |
10 Dec 2009 07:54 AM |
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0 Replies and 1841 Views
Using output from ISODATA to do supervised classification 1841 0
Started by Deleted User
I have run ISODATA on an ETM image. After performing seperability analysis and eliminating classes, I want to use the edited signature file as a input for maximum likelihood. But there will be no ROIs associated with it. Is there a way to take to the output of ISODATA and use it as an input for maximum likelihood
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0 |
1841 |
04 Dec 2009 11:17 AM |
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0 Replies and 1646 Views
ROI error 1646 0
Started by Deleted User
I tried to convert a vector to a ROI, but I got "None of the objects from this vector layer transferred to an ROI associated with the input file" error message. When I overlay the vector on the image, I saw the vector on image (so it's not a projection problem). I don't know why
I'll very appreciate any help.
Thanks very much!
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0 |
1646 |
03 Dec 2009 08:56 AM |
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0 Replies and 1485 Views
map coordinates of tie point 1485 0
Started by Deleted User
I tried to open an AVHRR NDVI product in ENVI. The orginial file format is ER Mapper (*.ers). When I imported it into ENVI, the projection is missing. I opened the original file in ERDAS, and get the projection (Lat/Lon, WGS84), but I cannot find the "map coordinates of tie point". Does anyoen know how to get that info. I'll very appreicate your help!
Thanks very much!
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0 |
1485 |
02 Dec 2009 08:41 PM |
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0 Replies and 1252 Views
Spectral response function 1252 0
Started by Deleted User
Hi all;
I am a new user to ENVI. My job involves working with data from a pair of&160; airborne hyperspectral imagers that were used to image clouds during a science field campaign. The first thing that I need to do is to obtain the spectral response function of the 2.21 micron channel of the imager using the aquired data.&160; However, I can't find in the ENVI literature a straight forward way to do that. I'd need both a plot and a table for a range wavelenghts around 2.21 microns. Does anyb...
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0 |
1252 |
02 Dec 2009 12:37 PM |
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3 Replies and 1275 Views
Subset Image 1275 3
Started by Deleted User
Dear Friends,
I have tried many times with diffrent options available in spectral/spatial subset under basic tools to subset my image based on ROI or vector file.
The problem is it cannot subset as per the area of interest (which is irregular shape) and only giving output image as rectangular shape. I have created vector file also but with the same result.
Could you please advise me how to subset an image based on any roi/vector shape. I am using ENVI 4.5
Kind regards
PK
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3 |
1275 |
01 Dec 2009 10:43 PM |
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2 Replies and 1160 Views
MODIS surface reflectance values 1160 2
Started by Deleted User
I downloaded MODIS surface reflectance 8d L3 global 250m grid data. When I loaded to ENVI and looked at the values, they are from 0-2 (I just looked at a bunch of locations with the cursor within an image).
When I loaded the same image to ERDAS, the values are 6000 to 8000, which are what I expected because they are the ref times 100.
I don't know why the two softwares gave me such different values Which one should I believe I'll very appreciate if anyone has experience with this and can he...
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2 |
1160 |
01 Dec 2009 02:39 PM |
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2 Replies and 1335 Views
Importing a NLCD file from MRLC to ENVI classification file type for change detection 1335 2
Started by Deleted User
I have downloaded two .tiff from MRLC.&160; I want to do change detection in ENVI from the post classification menu. The change detection widget wants a ENVI classification image.
How do I import a NLCD.tiff into a ENVI classsification image so I can run change detection statistics
&160;
THANKS!
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2 |
1335 |
01 Dec 2009 11:31 AM |
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4 Replies and 1247 Views
Vegetation analysis 1247 4
Started by Deleted User
&160;
Dear Friends,
I am trying to find out which season&160;data&160;is the best for vegetation mapping. I have four season Landsat 5 TM data for three consecutive years&160;and it contains mostly evergreen woodlands.
I donot know what pre-proccesing is required and which method I should follow. I am using ENVI 4.5 for image processing.
Please help me
PK
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4 |
1247 |
30 Nov 2009 05:48 PM |
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4 Replies and 1332 Views
Landsat TM5 TES 1332 4
Started by Deleted User
I would like to separate temperature and emissivity for Landsat TM 5.
What are they steps I would need to follow to do this Also I do not have access to FLAASH.
Thank you in advance.
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4 |
1332 |
30 Nov 2009 03:44 PM |
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2 Replies and 1545 Views
Tiff Files 1545 2
Started by Deleted User
Whenever a tiff file is created by ENVI (eg. classification result),&160;I can't open it in any&160;other software. What's up with this Is there some setting I can change
I can workaround by saving it as another file format but this is very annoying.
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2 |
1545 |
27 Nov 2009 01:28 PM |
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0 Replies and 1087 Views
Vegetation Mapping 1087 0
Started by Deleted User
Dear Friends,
I am trying to find out which season&160;data&160;is the best for vegetation mapping. I have four season Landsat 5 TM data for three consecutive years&160;and it contains mostly evergreen woodlands.
I donot know what pre-proccesing is required and which method I should follow. I am using ENVI 4.5 for image proceesing.
Please help me
PK
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0 |
1087 |
26 Nov 2009 06:01 PM |
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1 Replies and 1656 Views
Getting latitude and longitude 1656 1
Started by Deleted User
Hello everybody,
I am working with a geo-corrected hyperspectral image composed by 224 bands. In its header the UTM location (latitude / longitude) of the upper-left corner (long0,lat0), the pixel size and the rotation appear. By clicking in Tools / Cursor Location Value it is shown all the information about the pixel the mouse cursor is over, including its value and its latitude and longitude. How is the UTM calculated for each pixel
It would be very easy because:
latitude=lat0num_row*pix...
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1 |
1656 |
26 Nov 2009 05:37 PM |
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4 Replies and 1513 Views
Orthorectifying LANDSAT imagery with ENVI 4.6 1513 4
Started by Deleted User
Dear users,
I'm working with Landsat imagery using ENVI 4.5.&160; I would like to know if it is possible to orthorectify these kind of images with my version.
Does somebody know how to make it
Thank you so much.
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4 |
1513 |
26 Nov 2009 11:25 AM |