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0 Replies and 860 Views
Create Buffer line 860 0
Started by Deleted User
Hi everybody!
I would like to know if there is a way or a function to generate a buffer on a line (like the buffer tool in MapInfo) specifying the radius value..
I know the xy value of all vertex of my line, and i would like to find vertex of the buffer of this line specifying a radius value.
If anybody have an idea
Thank very much
Aurelien XEOS
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0 |
860 |
09 Dec 2010 02:13 PM |
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0 Replies and 947 Views
IDL 8.0.1 idlde freezes on second and subsequent runs, CentOS 5.5, requires rebootJ 947 0
Started by Deleted User
I'm using IDL 8.0.1 x86_64 on Linux CentOS 5.5
I can run the IDL development environment idlde properly only once without having to reboot.
To clarify, the main eclipse environment comes up, with prior workspace, if I didn't delete it, but then freezes while trying to connect to the IDL console (main idl program). I've seen it actually continue to work, with menus and files selectable, editable, but no console. Other times it just freezes.
I have investigated the startup scripts, i...
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0 |
947 |
07 Dec 2010 03:07 PM |
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0 Replies and 976 Views
Q: Rubberband box 976 0
Started by Deleted User
I've got some rubberband box code working on linux but when I run my app on windows (idl vm) my rubberband box's aren't erasing. Its a zooming type function, still works correctly just appears very messy while dragging. Has anyone encountered something like this before Suggestions on what it might be/what to check
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0 |
976 |
06 Dec 2010 11:28 AM |
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0 Replies and 1336 Views
IDL premuration - combination 1336 0
Started by Deleted User
Hi,
i am trying to develop a code that determine the different combination of set of numbers stored in an array. e.g.
a = &912, 5, 7&93 then i need the program to determine and calculate the number and content of arrays of combinations as follows:
&912,5&93
&912,7&93
&915,7&93
&912,5,7&93
i have written an IDL code to so so but the result is not correct.
Any help is very appreciated
pro display, values, size
;s = Size(values)
;N...
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0 |
1336 |
04 Dec 2010 05:52 PM |
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0 Replies and 976 Views
Using sigma_filter.pro 976 0
Started by Deleted User
Hello,
I would like to use the sigma_filter.pro on an image in IDL 7.1.
Im a new user and I dont understand how the calling sequence works. The documentation of the filter says that the calling sequence is:
Result = sigma_filter( image, box_width, N_sigma=(), /ALL,/MON )
Can someone help me I try it in IDL command Line without any success.
Thank you,
Max
Url of the sigma_filter.pro
http://astro.uni-tuebingen.de/software/idl/astrolib/image/sigma_filter.htmlIDLL...
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0 |
976 |
04 Dec 2010 02:50 PM |
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0 Replies and 1141 Views
Noise reduction (2 standard deviation script) 1141 0
Started by Deleted User
Hello,
I am new to IDL and I would like to create a script that will eliminate noisy pixels from an image and replace them with more valid value. The script will have to do several operations:
1- Verify if each pixel is valid (between - 2 standard deviation from the mean of the image)
2- For each invalid pixel, calculate the mean of a 9x9 (or other dimensions) convolution mask and replace the value of the pixel by the mean of the mask. So the new value will be calculated from the ne...
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0 |
1141 |
04 Dec 2010 12:56 PM |
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0 Replies and 949 Views
run classification over roi 949 0
Started by Deleted User
Hi,
I would like to run the classification algorithm over the test ROI and not over the whole image. In particular, I am using the SVM using the 'envi_svm_doit'. The SVM is very time consuming if it has to be run over the entire image. I know that there is a 'DIMS' in this function which allows us to introduce a coordinate range within which the classification will be performed, but I would like to know if there is any way to make the algorithm run over a specific roi.
Thank you in adv...
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0 |
949 |
03 Dec 2010 06:04 AM |
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0 Replies and 1008 Views
How to read stacked files and from them create Z-profiles in IDL? 1008 0
Started by Deleted User
Hello everyone,
I've been working with a set of stacked layer MODIS tiles in ENVI and have been trying to write an IDL program to do some batch processing for me. I'm stuck on two areas.
First, I haven't found a way to read the layer stack into IDL. To clarify, I have one file that contains a data cube consisting of many MODIS tiles overlaying one another. I tried using ENVI_OPEN_FILE, stackfile but according to my log that didn't actually open the file.
My second challange is that I...
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0 |
1008 |
29 Nov 2010 03:38 PM |
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0 Replies and 841 Views
call_external 841 0
Started by Deleted User
Am I able to pass information to and execute a script written in Python or C with the call_external command If so, are any examples available Thank you.
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0 |
841 |
29 Nov 2010 03:37 PM |
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0 Replies and 896 Views
ENVI_LAYER_STACK_DOIT - erasing values 896 0
Started by Deleted User
Hi,
I'm having a problem with ENVI_DOIT, 'ENVI_LAYER_STACKING_DOIT'. I have a large number of files, with different dimesions that i need to perform band math on.
I am trying to stack them first so that they will have the same dimensions allowing me to sum the bands in a 'math doit' function ( 2 images, 1 band each per pass).
However, when i stack just two of the images ( 1 band each), the resulting image only has zeroes ( the pixel values are lost). When i use the envi widget fo...
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0 |
896 |
28 Nov 2010 01:54 PM |
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1 Replies and 1340 Views
Why IDL cannot call ENVI functions 1340 1
Started by Deleted User
.
such as using ENVI_WRITE_ENVI_FILE in my pro
IDL> ENVI_WRITE_ENVI_FILE
Attempt to call undefined procedure/function: 'ENVI_WRITE_ENVI_FILE'.
Do I have to set some things in IDL or write codes to let IDL find these functions, or give up IDL
IDL> ENVI_WRITE_ENVI_FILE
Attempt to call undefined procedure/function: 'ENVI_WRITE_ENVI_FILE'.
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1 |
1340 |
23 Nov 2010 09:37 PM |
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0 Replies and 951 Views
error during .sav launch 951 0
Started by Deleted User
Hi everyone,
I created a .sav file and I am trying to launch it on a different IDL virtual Machine. I am obtaining the following error.
Unexpected validation error.
RESTORE: Unexpected item code found in save file.
Execution halted at: $MAIN$
I am not sure about its meaning. Could it derive from an obsolete routine
I created the .sav with IDL 7.0 and I am using it with IDL 7.1.
Thanks
Mitch
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0 |
951 |
22 Nov 2010 02:23 AM |
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2 Replies and 1091 Views
IMAGE function and /YLOG 1091 2
Started by Deleted User
Hi folks,
The new IMAGE function has an option to choose logarithmic axes (i.e., YLOG=1) but I have yet to get it to work. When /YLOG is set, the yaxis will be compressed into a very short line (i.e., the entire image becomes "squashed"). I've made sure no y-axis values contain 0, etc., and also tried using ASPECT_RATIO = some to try and force it to a more usable shape...to no avail.
The application here is plotting a frequency-time power spectrogram with a log frequency scal...
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2 |
1091 |
19 Nov 2010 11:44 AM |
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0 Replies and 874 Views
Strange Graphics Bug in 32 bit Linux 874 0
Started by Deleted User
We are running idl 8.0.1 on an up-to-date Centos 5 (32 bit) Linux. When you run the program below with the "idl" command, it will plot but the graphics do not retain when put behind a window and the buttons don't work. If you remove the stop everything works great. Or if you run the program in "idlde" then things work great even with the stop. Does anyone have a fix or a work-a-round
Paul Hein
pro test
; test idl object plotting with and without stop
a=&...
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0 |
874 |
18 Nov 2010 02:45 PM |
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0 Replies and 941 Views
Extracting info from the ASCII file with IDL 941 0
Started by Deleted User
Hi,
I have a ASCII text file whose entries look like this
111 AA 25 XX
111 AB -5 XX
222 AC 25 XX
222 AD 20 XX
222 AE 21 XX
333 AF 88 XX
444 AG 21 XX
444 AH 90 XX
and so on.....
In this file the first column represents a unique number refering to an experiment. Any particular experi...
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0 |
941 |
18 Nov 2010 08:46 AM |
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0 Replies and 1256 Views
Checking Folder Permissions 1256 0
Started by Deleted User
I'm using File_Test to check if the current user has write permissions to a folder. When I check using File_Test(path,/write) I get a 1 indicating yes. I get the equivalent result with File_Info.
print, file_Test('C:\Program Files\ITT\IDL64\products\envi44\spec_lib\jhu_lib',/write)
1
When I execute File_mkdir(child_path), my program crashes.
file_mkdir,'C:\Program Files\ITT\IDL64\products\envi44\spec_lib\jhu_lib\sli_lib
FILE_MKDIR: Unable to create directory: C:\Program Fil...
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0 |
1256 |
11 Nov 2010 03:19 PM |
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0 Replies and 827 Views
linux upgrade from IDL7.0 to IDL8.0 827 0
Started by Deleted User
Hello, I've just upgraded from IDLv7.0 to IDLv8.0 on a Redhat x64 box and found that I'm getting syntax errors on some basic commands, (for instance it doesn't like /EXTRACT in 'strsplit', the syntax of 'read_binary' or recognise 'interpol' as a procedure.) The help suggests there are no changes in the syntax to these commands, so whats going wrong Patch 8.0.1 hasn't made a difference. Thanks.
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0 |
827 |
10 Nov 2010 09:48 AM |
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2 Replies and 1364 Views
HAZE REDUCTION 1364 2
Started by Deleted User
Hello every one
i wanna to make acode with IDL using the IDL to remove haze from an image of SPOT IMAGE
Report Post
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2 |
1364 |
10 Nov 2010 04:51 AM |
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0 Replies and 1052 Views
HAZE REDUCTION 1052 0
Started by Deleted User
Hello every one
i wanna to make acode with IDL using the IDL to remove haze from an image of SPOT IMAGE
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0 |
1052 |
10 Nov 2010 04:37 AM |
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6 Replies and 1130 Views
idl-band math expression with a variable 1130 6
Started by Deleted User
Hi,
It's my first time in a forum, i hope we can help each other.
Well, I'm trying to calculate the WDVI index but I can't put the slope soil into the expression of math_doit, it doesn't recononise, it said that my variable is undefined. Also, I tested using with making a function of the index, but it doesn't work. So, my question is How can i put this variable in the band math expression.. in this case "ss". The first expr is NDVI and the second is the WDVI.
Here is a pa...
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6 |
1130 |
05 Nov 2010 02:16 PM |