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1 Replies and 2108 Views
How to define a coordinate system for a Geotiff Image 2108 1
Started by Deleted User
Could I define a coordinate system for a Geotiff Image in ENVI. I need to
execute Map->Convert Map Projection. When I open my GeoTiff Image,
the default Project is set to Arbitrary, and when I click OK to execute,
report error 'unable to convert from an Arbitrary project'.
So how to achieve this. Please help
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2108 |
07 Jan 2005 03:38 AM |
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0 Replies and 1729 Views
Problem with Band Math 1729 0
Started by Deleted User
May i know how to write a function that include power operator in Band Math For example, my Equation is X = 2.33(B1)power3.229. So, how to write the power function in Band Math
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1729 |
04 Jan 2005 10:16 AM |
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0 Replies and 2098 Views
ENVI 4.0 2098 0
Started by Deleted User
I´m asking if can I run the avhrr_batch_retrieve_header.sav on ENVI 4.0.
If this is posible, How can I do it
Thaks
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2098 |
01 Dec 2004 04:54 PM |
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2092 |
25 Nov 2004 04:57 AM |
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1771 |
25 Nov 2004 04:57 AM |
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1 Replies and 2091 Views
GTOPO30 2091 1
Started by Deleted User
Could someone let me know how to import GTOPO30 dem data. I did it a year or so ago but now the technique has been forgotten. I suspect there is an offset that is required but I just cannot seem to get things lined up.
I know this should be simple but I am having a mental block.
Thanks
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2091 |
15 Nov 2004 12:58 PM |
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1 Replies and 2274 Views
Output image to either TIFF or JPG 2274 1
Started by Deleted User
Hello,
I am trying to export my image into either a TIFF or JPG format. I used envi_output_to_external_format and was able to generate a TIFF file, but I can't read this file in XV! Does anyone know why this is
Also there doesn't seem to be a function in envi to export to a jpg. Why is that! You are able to do it through the gui! Anyways, I am trying to use the IDL function WRITE_JPG, however it requires a 2 dimensional image array. Does anyone know how to obtain this image array fr...
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2274 |
15 Nov 2004 12:13 PM |
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1 Replies and 1835 Views
Anaglyphs from DEMs 1835 1
Started by Deleted User
I have downloaded the Adam O'Connor* program &91anaglyph.pro&93 that makes red.blue anaglyphs from DEM data. Could anybody let me know how I actually run this program. I am running ENVI 4.1/IDL 6.1 on a Mac under OS X 10.3.5.
Thanking you,
Alf Eggo
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1 |
1835 |
12 Nov 2004 09:14 AM |
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0 Replies and 2169 Views
Urgen 2169 0
Started by Deleted User
he aplicado esta file CROSTA.PRO pero como puedo saber cuales son las zonas que contiene zonas de oxidos con esta aplicacion
Atentamente
Juan
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2169 |
23 Sep 2004 09:17 AM |
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0 Replies and 1689 Views
Belief modelling 1689 0
Started by Deleted User
Whether somebody knows here about implementation of Dempster-Shefer Theory and belief modelling through ENVI/IDL
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1689 |
05 Sep 2004 02:05 AM |
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0 Replies and 1981 Views
ROI format? 1981 0
Started by Deleted User
I was wondering if there is documentation for the format of ENVI ROI files
any place We are developing some open source code in C that, among other
things, we'd like to be able to create ROIs to be used in ENVI (rather than
making them within ENVI/IDL). Thoughts
--j
--
Jonathan Greenberg
Graduate Group in Ecology, U.C. Davis
http://www.cstars.ucdavis.edu/~jongreen
http://www.cstars.ucdavis.edu
AIM: jgrn307 or jgrn3007
MSN: jgrn307msn.com or jgrn3007msn.com
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1981 |
28 Aug 2004 01:53 PM |
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1 Replies and 1873 Views
exporting lat/lons from a georeferenced image 1873 1
Started by Deleted User
I need to export not only the height values from a DEM file but also the latitudes and longitudes. I can easily do this for the height values, simply exporting the file as ASCII. I have yet to find a way to export the latitudes and longitudes as separte arrays. That is - I need a latitude for each pixel and a longitued for each pixel. A 3 dimensional array would work fine but I'd be happy with 3 ASCII files with the same number of rows and colums as the original DEM file. We are looking int...
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1873 |
27 Aug 2004 10:06 AM |
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0 Replies and 2172 Views
Object-based Image Classification 2172 0
Started by Deleted User
Good Day. I just want to ask all expert users of ENVI if it is possible to perform object-based image classification. Like what eCognition does. Thanks
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2172 |
13 Aug 2004 02:36 AM |
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0 Replies and 2048 Views
Editing Classess 2048 0
Started by Deleted User
Good Day. I just want to post a question regarding editing classess after performing Supervised of Unsupervised Classification. Of course you won't get a perfect result out of all the process you will apply. So if a patch of a particular class gets in the wrong place, how would you change it to its correct clas The edit tools for the classification dialogue does have a manual way of deleting or joining a specific portion of a class however its kind of hard to use and inaccurate. There's also th...
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2048 |
12 Aug 2004 08:34 PM |
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0 Replies and 2095 Views
exporting coordinates 2095 0
Started by Deleted User
Hello!
I´'m just new in working with ENVI.
I had georefenced a jepeg map in ENVI and now I want to draw faults and export the data of coordinates of the faults in a text-file (or so; x- & y-values, because I want to import them in gmt)). Can anybody help me
Thanks
Andrea Brüstle
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2095 |
09 Aug 2004 01:37 AM |
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0 Replies and 2077 Views
ASTER kinetic temperature 2077 0
Started by Deleted User
Hi everyone,
I'm Ashish. I have ASTER kinetic temperature data of my study area. I'm able to load up the 'kinetic temperature' data set in ENVI. What I eventually would like to do is export this data into a GIS interface and do further analysis.
I'm not sure on how to get the temperature data at each pixel in the image Is this possible in ENVI If so, further will the the user get a tabular output of the temperature values for each pixel.
My final aim is to correlate the temperature of...
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2077 |
30 Jul 2004 12:20 PM |
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0 Replies and 2057 Views
Unsupervised classification. 2057 0
Started by Deleted User
I would like to ask about the percent of change parameter of the unsupervised class function of envi. It's just that I can't monitor how much percentage the processing has reached. All I see is the progress of the iterations that are being done. Well, i guess im very impatient. ERmapper, on the other hand, you can see the progress status, it has its own dialogue window, so you can see if it is reaching the desired percentage unchanged (its percentage change in envi). Could somebody enlighten me...
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2057 |
14 Jul 2004 07:53 PM |
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0 Replies and 2090 Views
ENVI header infomation 2090 0
Started by Deleted User
I am working with ENVI files but viewing them in Erdas Imagine. I need information about the header and can't find it anywhere.
There is an example of my header information below.
Can anyone tell me what each of the parameters mean For instance, what is the 16 in projection info Is there a place where I can find this info...I don't have a manual to look at. I have been able to figure out what map info means. I am having a problem reprojecting this info and would like to understand mor...
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2090 |
02 Jul 2004 07:30 AM |
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2021 |
28 Jun 2004 03:14 PM |
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1 Replies and 2058 Views
Band math issue 2058 1
Started by Deleted User
I have a technical query to do with the band math function. Essentially I have three images, each comprising 4 bands. I would like to overlay these to make one image, with the pixel selection being based on the minimum value in one band. I have been scratching my head but am not sure how to go about this!
Thanks, Jon Cox
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2058 |
11 Jun 2004 11:29 AM |