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1 Replies and 1884 Views instruction “if” with image  1884  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
1 1884
10 Jan 2005 02:42 PM
1 Replies and 1732 Views function added  1732  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
1 1732
07 Jan 2005 01:52 PM
2 Replies and 1801 Views HDF5 write capability  1801  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.
2 1801
29 Dec 2004 11:12 PM
0 Replies and 1703 Views Overlay and Regression  1703  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
0 1703
21 Dec 2004 09:15 AM
0 Replies and 1888 Views Daylength and Potential ET calculation  1888  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
0 1888
12 Dec 2004 11:55 PM
1 Replies and 1952 Views Creatting variables  1952  1 Started by  Deleted User Hi there, i am new to IDL and was just wondering how to create a variable tahnx
1 1952
03 Dec 2004 02:47 PM
2 Replies and 2063 Views 3d imaging  2063  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...
2 2063
02 Dec 2004 05:15 AM
0 Replies and 2043 Views DOIT for Decision Tree Classification  2043  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.
0 2043
19 Nov 2004 11:40 AM
0 Replies and 1934 Views Special Functions  1934  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.
0 1934
11 Nov 2004 03:43 PM
0 Replies and 2000 Views printing tab seperated data to file  2000  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
0 2000
08 Nov 2004 11:14 AM
0 Replies and 1728 Views Efficiency  1728  0 Started by  Deleted User After long time of operation my programe become slower and slower.Who can tell me whyThank you!
0 1728
03 Nov 2004 06:09 PM
0 Replies and 1895 Views IDL application  1895  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.
0 1895
30 Oct 2004 03:44 AM
0 Replies and 1805 Views getting pickfile to return the filter value  1805  0 Started by  Deleted User Is there any way to get pickfile to return the last value entered in the FILTER field
0 1805
15 Oct 2004 12:30 PM
1 Replies and 2095 Views IDL Java bridge - classloader problems  2095  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...
1 2095
28 Sep 2004 03:22 AM
0 Replies and 1966 Views Any way to use ACCELERATOR keys with CW_PDMENU?  1966  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.
0 1966
23 Sep 2004 02:00 PM
0 Replies and 1901 Views how to use C subroutines or programs in IDL  1901  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!
0 1901
22 Sep 2004 07:10 PM
0 Replies and 1991 Views Want to batch the spectral analyst function  1991  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.
0 1991
22 Sep 2004 06:35 AM
0 Replies and 1858 Views Job Opportunity in N Colorado  1858  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 ...
0 1858
13 Sep 2004 04:21 PM
0 Replies and 2175 Views strip chart  2175  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
0 2175
07 Sep 2004 03:16 PM
0 Replies and 2059 Views map_2points  2059  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...
0 2059
07 Sep 2004 03:11 PM
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