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0 Replies and 1289 Views
irrgular griding with the TRI_SURF function 1289 0
Started by Deleted User
Hi. I'm making a random dataset and interpolating a surface with tri_surf.
When I use regular griding (don't include an X and Y in the statement)
the range is 0 to 1 (because I'm using RANDOMU), which is what i want it to be.
However, when I add irregular griding, via a pair of RANDOMU arrays to make my X and Y grid, the Z value shoots up to a range of 0 to 10 or 15...it changes every time I run the program.
Any ideas on how to get a 0 to 1 range in Z and use irregular griding
...
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0 |
1289 |
26 Jun 2008 10:03 AM |
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2 Replies and 1474 Views
IDL SAV FILE 1474 2
Started by Deleted User
I have a fairly simple IDL code which i compiled and created a .sav file. It works when i click on the .sav file on the machine which has IDL but it doesn't work with the IDL virtual machine on a different computer!! i never understand why!!! The following are the functions are routines involved
DIALOG_PICKFILE, Widgets- button, label and table. i used the xmanager to have the loop
can anyone help
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2 |
1474 |
25 Jun 2008 02:38 PM |
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2 Replies and 1471 Views
How to create a variable with its name passed by at runtime without using execute()? 1471 2
Started by Deleted User
I know execute() can create variables with their names passed by at run time. For example,
com = 'variable1' ' = '' '55' ''' & tmp = Execute(com)
will create a varialbe 'variable1' with value equals to 55. Since Execute() is not supported in IDL Virtual Machine, is there any way to do it without using Execute()
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2 |
1471 |
25 Jun 2008 02:34 PM |
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0 Replies and 1185 Views
Projections IDL 1185 0
Started by Deleted User
Hi,
I have written a code in IDL which performs loops on a set of imagery and returns an output in the form of a new image. The results seem right, but the projection information is lost. It seems like the output image does not automatically inherit the projection information of the input images. Am i right in saying this If yes, i'm guessing i need to put in co-ordinates within the code.
Looking forward to a reply.
Raghu
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0 |
1185 |
24 Jun 2008 09:28 PM |
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1 Replies and 1647 Views
IDL and ERDAS floating point difference 1647 1
Started by Deleted User
Hi all,
I have a few images in floating point format from ERDAS Imagine and i intend to perform some operations on them using IDL. When i open the images in ENVI, there seems to be no problem.
However, in a script i write in IDL, the output looks bizzare and looks nothing like what i expect. As a test, i converted my images into float again using band math in ENVI, ran the IDL script, and the output looks normal. The same images which as supposed to be of the same data types (floating poin...
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1 |
1647 |
23 Jun 2008 09:53 AM |
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0 Replies and 1164 Views
Zoom and Region of interest 1164 0
Started by Deleted User
Hi,
I have a tiff image which i am displaying.I want to know how to select a particular area ie region of interest which when selected would zoom and also i want to know how to apply threshold for that ROI alone.Thanks in advance.
WIth Regards
Arun
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0 |
1164 |
20 Jun 2008 01:11 PM |
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1 Replies and 1492 Views
majority analysis 1492 1
Started by Deleted User
Hi, I am working on a script that automatically classifies an image. The final stage of the classification is a majority analysis, but somehow this does not work. The script only performs a partial majority analysis on one of the classes. I use the example script as provided in the ENVI help. Part of this code is shown below:
envi_file_query, fid, dims=dims, ns=ns, nl=nl, nb=nb, num_classes=num_classes
pos = &910&93
out_name = 'testimg'
method = 0
kernel_size = &915,...
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1 |
1492 |
19 Jun 2008 04:36 PM |
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1 Replies and 1375 Views
Out of curiosity, checking for keywords passed to the main program in event handler 1375 1
Started by Deleted User
Is there and easy way to check for keyword arguments passed to the main program while in the event handler. For example, I would like to pass the option to debur or not via /debug. In the main program I can use keyword_set(debug), but this is not recognized in the event handler.
I can use options such as system variables, but is there an easy way Can I pass arguments to the event handler for example
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1 |
1375 |
18 Jun 2008 06:34 PM |
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1 Replies and 1223 Views
plotting common values of separate arrays 1223 1
Started by Deleted User
Hello, I am fairly new to IDL and am working on a program to create timeseries comparisons of solar data. One of my tasks is to add a comparison between common days between different sets of data. Does anyone have an idea on how I might do this For example, my date arrays have the form:
dat1&91x, *&93 and dat2&91y, *&93 where x and y are the columns which contain the date information. The data sets range over different, but overlapping periods and different frequencies. Thanks in advance.
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1 |
1223 |
18 Jun 2008 11:40 AM |
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1 Replies and 1242 Views
convolution function 1242 1
Started by Deleted User
I am trying to implement IDL's CONVOL function in C exactly as IDL does. I understand what the Help is saying, but I suspect something is missing or incorrect on the help page because my implementation is producing very different results from using the CONVOL function. By the way, I'm not using any of the optional keywords. Has anyone else run into this problem
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1 |
1242 |
17 Jun 2008 01:22 PM |
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1 Replies and 1276 Views
GUI on exit: is it possible to create custom code? 1276 1
Started by Deleted User
Hello,
I have some custom code in the event procedure for an Exit menu item in a GUI app. I would like to have the same custom code when the user closes the application via the 'X' located at the top right side of GUIs instead of the File->Exit. Is it possible to do something like that Is there something like 'on_exit' procedure I can modify
Thanks,
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1 |
1276 |
17 Jun 2008 10:04 AM |
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1 Replies and 1560 Views
Recursive splitting of Image arrays 1560 1
Started by Deleted User
I am currently working on a project to separate textures in an image by means of hierarchical splitting. This program is to break an image down into N square sub-images. It then checks the similarity of the region and if it is outside of a threshold, it breaks the block into further sub-blocks. My mentor, who is unfamiliar with IDL, suggested using either trees or stacks to work through this. I have never done anything like this in IDL before so I was wondering if it was even possible and if...
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1 |
1560 |
16 Jun 2008 10:07 AM |
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0 Replies and 1219 Views
IDL use in Portland 1219 0
Started by Deleted User
Hi. I have just relocated to Portland, Oregon, have 6 years experience with IDL development, and am wondering if anyone know of any companies that use IDL here. I've yet to find any, and have only found one person who's even heard of it! Any ideas
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0 |
1219 |
13 Jun 2008 12:33 AM |
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2 Replies and 1077 Views
Outputting multi-panel images to postscript 1077 2
Started by Deleted User
I'm using IDL v7.0 on Mac OS X v10.5.2 and have been having trouble with the image scaling in output to the postcript device. For example, if I run the following IDL script (with the image array already set):
set_plot, 'ps'
device, filename='test.ps'
device, xsize=4, ysize=4, /inches
tvscl, image, 0, 0, /inches, xsize=1, ysize=1
tvscl, image, 2, 0, /inches, xsize=1, ysize=1
As expected, this outputs two panels (offset in x) to the postscript file, each containing the same image. Howe...
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2 |
1077 |
08 Jun 2008 08:12 PM |
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1 Replies and 1218 Views
Regarding Image processing 1218 1
Started by Deleted User
Hi,I do have a tiff image of a soil.I need to write code which could get the image as input and it should say how much percent of soil is there,how much percent of water is there etc.I am a novice so any help would be appreciated.
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1 |
1218 |
05 Jun 2008 12:24 PM |
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3 Replies and 1677 Views
IDL_IDLBridge 1677 3
Started by Deleted User
Hi everyone,
I am new to IDL, and am trying to understand how IDL_IDLBridge works. Because of how little experience I have had, the examples don't make too much sense to me. I am getting some strange behavior when I try to call procedures that I have made through the bridge object. For example, here is some code that I have written to test out functionality
pro plotbridge
oBridge0 = OBJ_NEW('IDL_IDLBridge')
oBridge1 = OBJ_NEW('IDL_IDLBridge')
oBridge2 = OBJ_NEW('IDL_IDL...
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3 |
1677 |
04 Jun 2008 09:49 AM |
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1 Replies and 1304 Views
Data range function 1304 1
Started by Deleted User
i know that there is a function 'data range' in Envi,what is the code in IDL How i can find a file .pro where see the functionIn Envi 4.4 i read that there is but i not found...Is almost possible use in Envi 4.3HELP ME PLEASE!!!!!
thx
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1 |
1304 |
03 Jun 2008 12:31 PM |
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1 Replies and 1385 Views
how to know the exact boundary of any province of China? 1385 1
Started by Deleted User
Hello, everyone,
China is a large country, but I want to only pay attention to a certain province, such as Beijing. But the manuscript (map_continents,/countries) cannot meet this need. I mean I want to know the exact boundary of Beijing, not China as a whole. So would you like to tell me how to do it
Thanks in advance.
Mike, You
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1 |
1385 |
30 May 2008 03:00 AM |
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1 Replies and 1178 Views
calling Window .exe routines from IDL 1178 1
Started by Deleted User
Does anybody out there has a simple routine which allows calling *.exe windows programs from IDL
Please respond to the list or privately to julius_turianrush.edu
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1 |
1178 |
29 May 2008 07:47 PM |
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0 Replies and 1413 Views
Regarding Crocker and Grier's particle tracking code 1413 0
Started by Deleted User
This question is more directed to those who are familiar with the 'feature' function developed by Crocker and Grier. The code is located at:
http://www.physics.emory.edu/7Eweeks/idl/kit/feature.pro
I've been trying for some time now to develop a similar code that can be used for particles with a large size distribution. I haven't been able to find a way to modify the feature code to work for such a system, and I'm hoping someone might have a suggestion. The code uses a parabolic mask to con...
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0 |
1413 |
29 May 2008 12:11 PM |