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1 Replies and 1625 Views How to call Google Earth Bridge from IDL  1625  1 Started by  Deleted User Hi, I would like to add the creation of KML files to my IDL program that georeferences the images. How do I call the ENVI SPEAR Google Earth Bridge from IDL I've been able to generate the KML files using ENVI and overlay them onto Google Earth. Thanks, Keith
1 1625
16 Apr 2014 02:18 AM
0 Replies and 1302 Views Problem to create grib index file?  1302  0 Started by  Deleted User Hi, guys: I have some problems for creating grib index file. My enviroments are windows 7 32bits and IDL 8.3. 1, In help documents, GRIB_INDEX_WRITE's syntax is : GRIB_INDEX_WRITE, Filename, Gindex but when call it and get the fellowing error: GRIB_INDEX_WRITE: String expression required in this context: GINDEX. Finally, I think the correct one is: GRIB_INDEX_WRITE, Gindex, Filename 2, I use the fellowing code to create hunderds of grib index files: FOR i=0, n_elements(filenames)-1 DO...
0 1302
12 Apr 2014 09:19 PM
4 Replies and 1134 Views crash when calling GRIB_GET_VALUES  1134  4 Started by  Deleted User hi, when i tried to get an array of values from a grib2 file using GRIB_GET_VALUES, the IDL crashed with a short message "/usr/local/exelis/idl83/idlde/bin.linux.x86_64/jre/bin/java: symbol lookup error: /usr/local/exelis/idl83/bin/bin.linux.x86_64/idl_grib.so: undefined symbol: jas_stream_memopen". why did this happen thanks in advance! ps: machine information: centos linux 6.5 64bit, idl8.3 64bit
4 1134
09 Apr 2014 07:25 AM
2 Replies and 1623 Views Georeference from IGM in IDL  1623  2 Started by  Deleted User Hi, I would like to use IDL to batch process files from a data collection. In ENVI, I use the "Georeference from IGM" command and then "Save As Tiff" to write the resulting georeferenced image as a GeoTiff file. How do I call these two ENVI commands from IDL Thanks, Keith
2 1623
08 Apr 2014 07:43 PM
2 Replies and 1337 Views Reading in file and performing calculations  1337  2 Started by  Deleted User Hi, Forgive me, but I'm very very new to programming and was hoping for some guidance. Using this script: http://idlastro.gsfc.nasa.gov/ftp/pro/astro/gcirc.pro, I can calculate the distances between two objects given the Right Ascension and Declination for star 1 and star 2. There are roughly 150 different stars I need to do this for, so I was hoping there is a way I can read in a file that contains the coordinates for all the stars and perform the distance calculation in a loop. The RA and Dec ...
2 1337
07 Apr 2014 05:57 PM
2 Replies and 1378 Views Commenting a range of lines in a code  1378  2 Started by  Deleted User Dear IDL Users, I would like to be able to comment out a range of lines in a code with a single entrances (at the end and at the beginning of the range). There are utilities like "toggle comment" but I am wondering, is there a way other than putting ; in front of every line Thanks, - NG
2 1378
07 Apr 2014 07:53 AM
1 Replies and 1577 Views averaging the rainfall in netcdf files  1577  1 Started by  Deleted User In my code below, I am having difficulty figuring out a way to sum up rainfall numbers from multiple netcdf files. I need to sum up averages for months, years, and certain hours of the day (00Z,03Z,06Z, and so on). Im not sure what type of coding i should use to sum up the rainfall regimes of a certain area using the rainfall array in the netcdf file. Could anyone give me a possible suggestion Thank you for your time and help. pro january_files latmax = 3 & latmin = -3 lonmax = 3...
1 1577
04 Apr 2014 02:49 PM
1 Replies and 1314 Views why can&39;t I just buy a copy of IDL from your website, or even find a price?  1314  1 Started by  Deleted User some text here
1 1314
04 Apr 2014 11:35 AM
2 Replies and 1913 Views "ENVI_GET_DATA" not returning the number of bands that i specify  1913  2 Started by  Deleted User ;Though the POS keyword is input with an array of more than 1 band ; the output "data" array receives only 1 band. Hoping for a few suggestions! fname = 'E:\puneeth_CONTD\hyperion\subsetdata\iarr & logres subset\lower_vajr_IARR' envi_open_file, fname,r_fid=fid if (fid eq -1) then return ; return ifthe file is invalid envi_file_query, fid,dims=dims, nb=nb a= CALL_FUNCTION('wavelength_selector', nb); wavelength range "I'm interested in band 124 to 157" b=a-1 a=indgen(NB) a=a&...
2 1913
04 Apr 2014 07:23 AM
1 Replies and 1494 Views [SOLVED] Error bars extend beyond the plot using pl=errorplot(); plot unresponsive  1494  1 Started by  Deleted User I am using the pl=errorplot(x,y,xe,ye) command to plot an x,y graph with x and y errors. Unfortunately, the error bars extend beyond the edge of the graph. Is there someway to truncate them like in the Direct graphics system Secondly, when I use the errorplot and plot graphics functions, sometimes they are responsive (they can be resized or closed, for example), and sometimes they are not (one needs to use pl.close to close the window, for example). Why does this happen Thanks, Scott
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03 Apr 2014 05:59 PM
4 Replies and 1242 Views output to console as line  1242  4 Started by  Deleted User Hello, I have a very simple (I think) problem that I can't seem to figure out. I have an array with numbers (lake depths) and want to calculate the difference from each element to all the others and output that ideally as a table or at least as lines in the console. I created the following program with a nested loop that does the correct calculations, but it outputs the results as columns, and I want them one element at the time with the differences output horizontally (e.g. in one line).I want ...
4 1242
03 Apr 2014 08:25 AM
3 Replies and 1449 Views Legend in plots with symbols  1449  3 Started by  Deleted User Hi, I include legend in my plots using aa=legend(...). When my plots have only symbols, the legend contains three symbols for each line. Is it possible not to triplicate the symbols in the legend ie, I want only one symbol appearing in the legend, for each symbol type of my plot. Thank you!
3 1449
03 Apr 2014 05:11 AM
1 Replies and 1595 Views [SOLVED] IDL-Java bridge heap size  1595  1 Started by  Deleted User Hi. How to increase java heap size in IDL-Java bridge. Options in the idljavabrcr-file doesn't works: JVM Option1 = -Xms1024m JVM Option2 = -Xmx4096m Any suggestions Thanks.
1 1595
02 Apr 2014 11:22 PM
3 Replies and 1472 Views Wrong result in multiplication  1472  3 Started by  Deleted User Hello, IDL generates a wrong multiplication between two numbers. The sentence is: print, 1366 * 24 IDL generates: - 32752 If we try with a number greater than 1366 that multiplicates 24, IDL will always generate a wrong number. Thanks for your help.
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02 Apr 2014 08:33 AM
1 Replies and 1210 Views how to display images with fillvalue or NaN with IMAGE function???  1210  1 Started by  Deleted User I have a 2-D data, with valid range &91-20.2,709.2&93,fillvalue=-100. Is there any keyword for Image function to control the display of the fillvalue, eg. fill the fillvalue pixels with white color, and display the other valid values with a continuous color table.
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30 Mar 2014 11:36 AM
2 Replies and 1331 Views Handling big data cubes  1331  2 Started by  Deleted User Hi, I have ~5000 1024x1024 image arrays I'd like to hold in a data cube. A good percentage of the pixels (maybe 30) are data that I don't care about. Subsequently, I'm going to be extracting various statistics that drill down the longest dimension of the cube (i.e. the temporal direction). What's the most memory efficient way to handle this Is there a trick with sparse arrays More generally, perhaps: How do other folks handle large time-series data cubes in IDL without simply throwing more ...
2 1331
23 Mar 2014 08:30 AM
1 Replies and 1637 Views Help on time array loop  1637  1 Started by  Deleted User My code following my message here is messing up on creating a time series for my 3hr daily rainfall trmm net-cdf data that i am reading into IDL. It is only looping the years from 1998-2013 and the first 6 months 1-6. Basically I am trying to create my time array during each loop so it corresponds to the net-cdf file time. For an example a file name is: 3B42.19980101.00.7 this represents January 1, 1998 00Z time for the file. I know its my time array and how its taking in each variable, but I a...
1 1637
20 Mar 2014 03:13 PM
1 Replies and 1166 Views Specific histrogram generation  1166  1 Started by  Deleted User Hi everyone, I have a script that will run through a bunch of images and generate stats and histograms values for each image. I'm looking to speed this process up since it is quite slow. I'm really only interested in 2 histogram values: 0 and the highest histogram value (differs depending if 8-bit or 16-bit image). Is there anyway that I could get ENVI/IDL to only give me these values to speed things up Thanks in advance
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20 Mar 2014 09:17 AM
1 Replies and 1574 Views IDL_IDLBRIGDE problem  1574  1 Started by  Deleted User I'm try to run a 'for' in 4 processors using split_for.pro but i couldn't because idl send me this message: Loaded DLM: IDL_IDLBRIDGE. IDL_IDLBRIDGE Error: Unsupported parameter type: IDL_TYP_UNDEF Execution halted at: SPLIT_FOR 162 I send you split_for.pro
1 1574
19 Mar 2014 02:05 PM
2 Replies and 1380 Views can&39;t oplot shifted multiple plots  1380  2 Started by  Deleted User I want to plot xx, vs. yyy to see if the function varies. I plot first yyy : iplot, xx, yyy&911,*&93 , where * means all values in the row 1. I need yyy&912, *&93 to be shifted by 20. , I wrote so: .run for i=1, 3 do begin iplot, xx, yyy&91i,(*20)&93, /overplot, $ LINESTYLE=2 end end and it gives me syntax error in this line: iplot, xx, yyy&91i,(*20)&93 Can anyone help me with it how to write second argument for yyy (instead of (*20) Thank you in advance
2 1380
17 Mar 2014 08:31 AM
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