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1 Replies and 1656 Views
instruction “if” with image 1656 1
Started by Deleted User
Hi,
I would like to make a conditional instruction “if” about several images witch built a “imageresult” with desired values :
For each pixels of image1 and image2
If ( image1 Greater than image2) then imageresult = 2
else imageresult= 3
I already found this syntax :
imageresult =(image1 GT image2)
but that is not enough because the result is a mask image which contains O et 1
and it is not possible to choose the values of imageresult
thank for your help
Stéphane Lhomme
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1 |
1656 |
10 Jan 2005 02:42 PM |
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1 Replies and 1503 Views
function added 1503 1
Started by Deleted User
I wrote a function wich i want to put into to specific folder. How do i make idl to look into that folder every time i call this function. Basicaly i just want to invoke this function in any program just like any other function from idl lib. I tried !PATH modification a even put it in lib/ directory but idl still says 'variable undefined' or 'calling undefined function' when i call it. PLZ help. i dont know what to do any more.
Thanx
Ladi
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1 |
1503 |
07 Jan 2005 01:52 PM |
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2 Replies and 1570 Views
HDF5 write capability 1570 2
Started by Deleted User
Recently RSI has provided patch which allows HDF5 write capability in IDL 6.1. Do anybody has idea where to look for routines / functions which allow HDF5 write capability or any example program on this - the patch do not provide any help file. Need help urgently on this subject.
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2 |
1570 |
29 Dec 2004 11:12 PM |
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0 Replies and 1485 Views
Overlay and Regression 1485 0
Started by Deleted User
I want to overlay a census block polygon shapefile with a B&W aerial photo to calculate the average spectral variance within each block and correlate with block populations. How do I do it in IDL
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0 |
1485 |
21 Dec 2004 09:15 AM |
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0 Replies and 1671 Views
Daylength and Potential ET calculation 1671 0
Started by Deleted User
Hi there,
For arrays I'd like to calculate daylength (or potential sunshine hours).
Also would like to determine solar irridance for a complex sloping surfaces - e.g. SRAD from Wilson and Gallant.
Do you have IDL code for either of these tools
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0 |
1671 |
12 Dec 2004 11:55 PM |
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1 Replies and 1733 Views
Creatting variables 1733 1
Started by Deleted User
Hi there, i am new to IDL and was just wondering how to create a variable tahnx
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1 |
1733 |
03 Dec 2004 02:47 PM |
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2 Replies and 1649 Views
3d imaging 1649 2
Started by Deleted User
hi there, has anyone be familiar with 3d objects reconstructed from a pair of 2d images using idl 6.1 at all cheers...
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2 |
1649 |
02 Dec 2004 05:15 AM |
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0 Replies and 1783 Views
DOIT for Decision Tree Classification 1783 0
Started by Deleted User
Is there a ENVI processing routine for classifications using a decision tree. CLASS_DOIT appears to work for supervised and unsupervised techniques, but I don't see an option for a decision tree.
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0 |
1783 |
19 Nov 2004 11:40 AM |
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0 Replies and 1690 Views
Special Functions 1690 0
Started by Deleted User
Has anybody heard of an implementation of the (Barne's) extended Hypergeometric function in IDL This is available in Maple (called hypergeom) but not in IDL.
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0 |
1690 |
11 Nov 2004 03:43 PM |
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0 Replies and 1776 Views
printing tab seperated data to file 1776 0
Started by Deleted User
I am trying to write to file using FORMAT to define the file structure (FORMAT='(f9.7,blah,blah,blah)'). I want to write three columns, separated by tabs. How to I specify the tab in the FORMAT statement
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1776 |
08 Nov 2004 11:14 AM |
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0 Replies and 1504 Views
Efficiency 1504 0
Started by Deleted User
After long time of operation my programe become slower and slower.Who can tell me whyThank you!
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0 |
1504 |
03 Nov 2004 06:09 PM |
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0 Replies and 1685 Views
IDL application 1685 0
Started by Deleted User
I am a postdoctoral research fellow. IDL is very useful and good tool so that we can use IDL very often in oue research. In our research we often employ the function of image classification . It is expensive for us to buy a set of ENVI for the only one fucntion . We would like to konw whether you have IDL image classification model for download free of charge . or we can pay some for it. Thank you very much for your help.
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0 |
1685 |
30 Oct 2004 03:44 AM |
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0 |
1604 |
15 Oct 2004 12:30 PM |
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1 Replies and 1848 Views
IDL Java bridge - classloader problems 1848 1
Started by Deleted User
I am running into problems when using Java from within IDL if the Java code requires a
Classloader (for example obtained through the Java call Foo.class.getClassLoader()).
This and similar code when executed through the IDL-Java bridge returns null.
Is there a way to configure IDL, or the IDL-Java bridge, such that this call does not return null
Btw, the Java code that requires this Classloader is not completely under my control.
I am using Apache's XMLBeans libraries to assist in XML p...
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1 |
1848 |
28 Sep 2004 03:22 AM |
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0 Replies and 1751 Views
Any way to use ACCELERATOR keys with CW_PDMENU? 1751 0
Started by Deleted User
If I want to put accelerators in my old applications that use CW_PDMENU for menus instead of a long list of WIDGET_BUTTON calls, am I going to have to rewrite all those menus I'm hoping there's a way to use accelerators with the CW_PDMENU function.
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0 |
1751 |
23 Sep 2004 02:00 PM |
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0 Replies and 1639 Views
how to use C subroutines or programs in IDL 1639 0
Started by Deleted User
If anyone knows to how to call and execute C programs in IDL, please let me know.
I want to encrypt an IDl unformatted data file, by using an encrpting program, such as lucifer.c.
But I don't know how to call and execute this C program. It is an implementation of a simplified version of the Data Encryption Standard (DES). Thanks!
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1639 |
22 Sep 2004 07:10 PM |
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0 Replies and 1696 Views
Want to batch the spectral analyst function 1696 0
Started by Deleted User
I need to run the spectral analyst function, i.e., identify a material/spectrum based on some spectral library. I tried to set to log manager in ENVI to collect the commands used to run this process but nothing was written to the log. I'm aware of the 'spectral_feature_doit' and 'class_doit' procedures but they return classified images not a list of possible spectra matches. Any direction here would be helpful. Thanks.
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1696 |
22 Sep 2004 06:35 AM |
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0 Replies and 1644 Views
Job Opportunity in N Colorado 1644 0
Started by Deleted User
All,
We currently hiring a contract to hire IDL/C Developer for a position at one of our client sites in Northern Colorado.
ISYS Technologies is a Services and Solutions company focused on IT and Engineering Services. We've been in business since 1989. Most of our clients are Fortune 1000 companies and government agencies. In the commercial industry, most of our clients are direct contracts. In the government sector, we act as a sub-contractor in many cases, on large contracts primed by ...
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1644 |
13 Sep 2004 04:21 PM |
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0 Replies and 1869 Views
strip chart 1869 0
Started by Deleted User
Hi. I am switching from a VB front end to and IDL V6.1 front end for data collection. Does anyone have or know of a direct graphics strip chart display
Thanks,
Ed May
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0 |
1869 |
07 Sep 2004 03:16 PM |
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0 Replies and 1839 Views
map_2points 1839 0
Started by Deleted User
Hello:
I am using map_2points to define the angular distance and azimuth angle between 2 points. How do I use the results of map_2points to plot arrow vectors where the length of the arrow is the distance between the 2 points and the orientation of the vector is determined by the arrow pointing from the 1st point to the 2nd point. Each point are defined by its latitude and its longitude.
If such a mapping subroutine does not exist, do I use the results of map_2points to calculate the zonal...
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1839 |
07 Sep 2004 03:11 PM |