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0 Replies and 868 Views
Best way to plot 2dimensional data as density map 868 0
Started by Deleted User
Hi,
I am new to IDL and I have the following problem. I would like to plot the intensity, measured by a photodiode, versus wavelength and an additional parameter, i.e. pumping power. The intensities, which are arranged in a 2-dimensional matrix, should be plotted as density plot. Afterwards I would like to change the color map of the image, the contrast, etc., and I would like to measure profiles at different points in the image. Which routine should I use for plotting the data. First I trie...
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0 |
868 |
07 Jun 2010 10:03 AM |
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0 Replies and 1073 Views
Urban thermal Map from LANDSAT 1073 0
Started by Deleted User
HI,
How to generate surface temperature map or urban heat island map from LANDSAT images using ENVI.
Thanks
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0 |
1073 |
07 Jun 2010 07:17 AM |
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0 Replies and 847 Views
colorbar 847 0
Started by Deleted User
Hi,
I have another question about colorbar. I'm ploting with 'contour' right now, but I didn't find an easy way to add colorbar for it. What I do currently is to download Dr. Fan's coyote library and run "colorbar" commander after it.
But I guess idl should provide some straightforward method for it. Can anybody give me some hint or suggestion
Thanks a lot!
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0 |
847 |
03 Jun 2010 10:00 AM |
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0 Replies and 1036 Views
HDF-EOS Grid plotting 1036 0
Started by Deleted User
I'm trying to provide plotting examples for HDF-EOS file with IDL for our customers. It's very difficult to offer general way for following projection types: SOM, Polar Stereographic, LAMAZ and Sinusoidal. (not hard coding)
I'm looking for some help here to give me some hints or rules how you plot different grid projection. Or let me what are useful commanders for it.
Thanks
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0 |
1036 |
01 Jun 2010 11:45 AM |
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1 Replies and 994 Views
Problems with IDL in Fedora 13 994 1
Started by Deleted User
I've upgraded to Fedora 13, from Fedora 12, and i'm having problems with some of the display.
Specifically, when i load a widget, some or all of the characters are missing. Where, in a button something once said something like "Help" for example, it is now just a series of blank squares, if that makes any sense
Any suggestions on how to fix this
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1 |
994 |
01 Jun 2010 05:33 AM |
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0 Replies and 943 Views
iSurface statistics 943 0
Started by Deleted User
Hi,
I am a very new user toying around with various idl tools.
I created a surface using isurface, importing a file with latitude(y), longitude(x) and elevation data(z). My task is to find out the surface area and the volume. I found those very features in the operations -> statistics option : Area under surface: 32400.0000, Approximate volume: 20352106496.0000.
Now my questions are :
1. What do the above mentioned statistics signify Have they counted the number of non-white vo...
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0 |
943 |
01 Jun 2010 02:58 AM |
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0 Replies and 785 Views
Loading in Consecutive Data Files (.csv) 785 0
Started by Deleted User
Hello All,
I would like to create a .pro routine which reads in a number of consecutive .csv files which are randomly named in the same folder. For instance there might be 100 randomly named .csv files in the same folder. My question is: how do I load these into IDL and assign each of these files a matrix name ie. M1, M2, M3, M4 etc. in order that I can carry out mathematical manipulations on them or visualise them
Thanks,
Nevica
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0 |
785 |
27 May 2010 07:09 AM |
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0 Replies and 901 Views
IDL working with WebServices 901 0
Started by Deleted User
Hi,
I'm a new IDL User, and I'm writting a new silverlight application that need to work with IDL, to create charts, and do some calculations. To use IDL with silverlight, I create a Web Service wich is dedicated to communicate with IDL. When the user want to produce a chart, the silverlight application, sends parameters to the web service (type of chart, number of values, size.... The web service receive this parameters, send data to IDL. IDL produce the graph, and save it into a file, tha...
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0 |
901 |
27 May 2010 03:40 AM |
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0 Replies and 1062 Views
FreeBSD 1062 0
Started by Deleted User
Hi Folks,
Does anybody have already tested and use IDL/ENVI under FreeBSD
If so, are performances are good enough to get work accomplished
In the same way, are there any differences between windows, OSX and Linx performances of IDL/ENVI
Thanks for feedback.
a.
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0 |
1062 |
26 May 2010 03:33 PM |
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0 Replies and 862 Views
iPlot and Data Manipulation 862 0
Started by Deleted User
Hello,
I am new to IDL but am familiar with how Microsoft Excel can be used to manipulate data.
I use iPLot to visualise data by following these steps:
1. I point to the file in question in the default folder by:
f ='C:\Users\rxj72462\Desktop\Default\overnight.xls'
2. I then find that f is a string variable but contains the data which I want to visualise. So I can do:
iPlot, f
and it will plot gobblygook but I can bring up VISUALISE from the iPlot pull down menus an...
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0 |
862 |
26 May 2010 04:26 AM |
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1 Replies and 1061 Views
java problem 1061 1
Started by Deleted User
hi,
i'm trying to get idl to execute some java (my language may betray that i'm a java newbie). i'm using a pre-made idl routine that should be calling some java "stuff" (methods classes). my fingers were crossed that it would work straight away, but i got this strange looking java stack trace. so i went to the java examples that come with idl, as a launching point to understand things. at this point, something weird happened. i ran hellojava fine. then i tried to run hello...
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1 |
1061 |
24 May 2010 04:53 PM |
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0 Replies and 748 Views
so simple: how do I fold comments 748 0
Started by Deleted User
I found in the IDL help how to enable code folding, which I've done, but I just want to fold about 50 lines of comments (version n-1 of the code I'm changing). The little - in the left column only is automatically guessing about three lines of those 50 to fold (basically the lines in my comments that were already commented :). How can I select lines to fold and have that just happen
This is one of those examples where the IDL/ENVI help is just so lacking - tells you that something can be do...
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0 |
748 |
24 May 2010 08:03 AM |
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0 Replies and 916 Views
How to plot one dimension data field 916 0
Started by Deleted User
I'm plotting HDF4 file with idl now. I can plot data filed having equal or more than 2 dimensions. But how I can plot some data field only with one dimension I post my code for 2 dimensions or more below:
status=EOS_SW_READFIELD(swath_id,DATAFIELD_NAME,data)
MAP_SET, /GRID, /CONTINENTS
CONTOUR, data, lon, lat, /OVERPLOT, /FILL, C_Colors=Indgen(levels)3, Background=1, NLEVELS=levels, Color=Black
MAP_GRID, /LABEL, COLOR=255
MAP_CONTINENTS, COLOR=255
Thanks!
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0 |
916 |
21 May 2010 01:12 PM |
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1 Replies and 870 Views
Reading qfit data 870 1
Started by Deleted User
I have a data file in .qi format. It is organized into records and each record contains 12 fields. Each field is a 4byte long integer. This means the total length of each record is 48 bytes. How can this be read
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1 |
870 |
21 May 2010 09:22 AM |
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2 Replies and 1112 Views
Smile idl-problem visualization image linux 1112 2
Started by Deleted User
I have a problem with idl 7.0 for linux (ubuntu 10)
When i read an image and i try to view this on a window, it give me an image
of the dimension of my pc screen, the image is cut.
And the same happen when i write it on a file.
"read_jpeg,path_image, image
window, 10, xsize=5950, ysize=341
tv, congrid(mercury_map, 5950, 341)
image=tvrd(true=3)
tv,image,true=3
write_jpeg, path_out'prova.jpg',image,true=3, quality=100"
Wit...
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2 |
1112 |
19 May 2010 08:19 AM |
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2 Replies and 1082 Views
IDLHELP does not start 1082 2
Started by Deleted User
I have a fresh new installation of IDL 7.1, in a 32bits Ubuntu 7.04 Intel QuadCore Platform.&160; When I start the help system (either with idlhelp from the system or with in IDL) it opens a window and says
127.0.0.1 could not be found. Please check the name and try again.
And that's all (the window remains open, but white).&160; My system is well configured, I can ping to 127.0.0.1 or digg to it also.&160;
&160;
Somebody can help me&160; Thanks,
&160;
&160;&160;&160;&160;&16...
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2 |
1082 |
18 May 2010 09:53 AM |
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1 Replies and 1135 Views
the figure can't show chinese 1135 1
Started by Deleted User
When showing a figure by IDL7.1, the label in Chinese can't show correctly. How can i solve this problem. Thank you very much!
system: linux (ubuntu)
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1 |
1135 |
17 May 2010 10:02 AM |
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1 Replies and 1192 Views
Batch resampling 1192 1
Started by Deleted User
Hi
I am very new to IDL and am still&160;trying to get my head around it :-)
I need to do a batch resolution resample of&160;a number of Tiff &160;images to a 1:16 ratio. I am not sure how to set this resampling ratio.
Can anyone help
Thanks
Chenay
&160;
&160;
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1 |
1192 |
17 May 2010 12:37 AM |
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1 Replies and 1193 Views
'math_doit' with multiband output images 1193 1
Started by Deleted User
Hi,
Basically i have a script that makes a stack of 12 input files (22 layers).&160; The script transforms them to all be the same interleave and datatype(2=integer).&160; The problem is that two of the multiband files are byte.
When i try to use 'math_doit'&160; for exp=fix(b1) i can not get it to output a multiband file.
After opening the file and checking the datatype i have this chunck of code:
&160;IF (dt eq 1) THEN BEGIN
pos = lindgen(nb)
&160; &160;&160;&160; IF (nb GT 1) Th...
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1 |
1193 |
14 May 2010 05:24 PM |
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0 Replies and 778 Views
ENVI_OPEN_DATA_FILE no found with ESRI ASC files 778 0
Started by Deleted User
Hello Everyone
I need open open so many asc files (esri ascii format), but no found ENVI_OPEN_DATA_FILE..
which will be the right choice......
ENVI_OPEN_DATA_FILE, Fname &91, /ACRES&93 &91, /ADRG&93 &91, /ALOS&93 &91, /ASTER&93 &91, /ATSR&93 &91, /AVHRR&93 &91, /BMP&93 &91, /CADRG&93 &91, /CIB&93 &91, CORRECTED_SRTM_OUT_NAME=filename&93 &91, /COSMOSKYMED&93 &91, /DIMAP&93 &91, /DMSP&93 &91, /DOQ&93 &91, /DRG&93 &91, /ECW&93 &91, /ENVI&93 &91, /ENVISAT&93...
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0 |
778 |
13 May 2010 10:59 AM |
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