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1 Replies and 1668 Views
Automatic Compilation problem 1668 1
Started by Deleted User
Odd issue I have come across...
I have a function that I defined myself and the .pro file is located in a directory which is included in my !PATH, however when I run a program that calls this function it doesn't find it and compile it (keeps thinking it is an undefined variable). However when I compile this function before running my main program all works as it should. I really don't think it is a IDL !PATH issue, because I have another function that I call within this main program which is l...
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1 |
1668 |
11 Jun 2014 08:41 AM |
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0 Replies and 1580 Views
excel questions 1580 0
Started by Deleted User
my code:
{ oExcel=obj_new("IDLcomDispatch$PROGRID$Excel_Application")
if ~oExcel then return
oExcel->GetProperty,Workbooks=oWkbks
oWkbks->Add oWkbks->GetProperty,'Book1',Item=oBookData
........}
now, the question is: 'Book1' can be changed automatically, and the code had error. How can I get the name of workbooks
another question:oWkbks->SaveAs,filename ; The program prompted whether I want to save every time. how can I cancel out this prompt
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0 |
1580 |
11 Jun 2014 03:14 AM |
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0 Replies and 1391 Views
loop over list and arrays 1391 0
Started by Deleted User
Dear IDL user,
I have created a list like a=list(arrA, arrB, arrC, arr...) and each of the arrays contain parameters like arrA=&91'para1', 'para2', 'para3', ....&93 . Using an outer FOR loop for the elements in the list return a string of the elements. With an inner loop I like to step over the different arrays to retrieve values for the parameters.
Any suggestions on how to loop over the different elements inside the arrays are appreciated - or is there in general a better way to get it run...
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0 |
1391 |
10 Jun 2014 11:37 AM |
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1 Replies and 3310 Views
Keyword Parameters not allowed in call 3310 1
Started by Deleted User
Hi,
I am very new to IDL so forgive me if this question seems stupid. I am trying simply to read a .tif file and let IDL show the image. My commands were:
IDL> a=read_image('frame_1.tif')
IDL> help, a
then I receive
A BYTE = Array&913, 560, 420&93
IDL> plotimage ,bytscl(a)
But after I execute the last command, I receive "Keyword parameters not allowed in call."I don't understand what I did wrong. Any ideas
Thank you in advance.
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1 |
3310 |
02 Jun 2014 11:03 AM |
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1 Replies and 1497 Views
IDL 8.3 workbench java_bridge problem? 1497 1
Started by Deleted User
Hi, guys:
I want to deal grib file with IDL 8.3 and Netcdf-java in windows 7 64bit. I run the fellowing code:
oNetcdfDataset = OBJ_NEW("IDLJavaObject$NetcdfDataset", "ucar.nc2.dataset.NetcdfDataset")
NetcdfFileObj = oNetcdfDataset->openDataset("GLDAS_VIC10_M.A201305.001.grb")
In IDL workbench "idlde.exe", I get the errors, which shows that java bridge could not open the resource files in jar:
IDL> oNetcdfDataset = OBJ_NEW("IDLJavaObject$NetcdfD...
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1 |
1497 |
24 May 2014 10:34 AM |
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1 |
1512 |
22 May 2014 10:22 AM |
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5 Replies and 1745 Views
Using FLAASH 1745 5
Started by Deleted User
Hi.
What steps are needed for the preprocessing of hyperspectral image (EO-1 hyperion) before atmospheric correction procedure.
If I do radiometric calibration with the "Apply FLAASH Settings", that scale factor I will have to specify in the atmospheric correction module
Does radiometric calibration procedure consider scaling coefficients (SCALING_FACTOR_VNIR = 40, SCALING_FACTOR_SWIR = 80) specified in the _MTL.TXT file
Best regards
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5 |
1745 |
21 May 2014 09:36 PM |
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1 Replies and 1847 Views
Writing a simple program to calculate sin and cos of given angle and convert angle 1847 1
Started by Deleted User
I'm just staring to learn how to program with IDL , and am trying to write a simple program to ask a user to input an angle in degrees and then have the program output cos(θ), sin(θ) and convert the angle to radians. This is my attempt at creating a program for just the first task of computing cos(θ) so far, but am having no luck. Please let me know if you can help. Thanks for any input!
pro theta
compile_opt idl2
n=0
read, n, prompt= 'Enter angle in degrees'
y=cos(n)
print, y
...
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1 |
1847 |
21 May 2014 10:11 AM |
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2 Replies and 1497 Views
Reading a DEM [TDX] 1497 2
Started by Deleted User
Hi there,
i'm pretty new to IDL and got a question regarding DEM processing in IDL.
I have a dataset of TDX DEMs and want to manipulate certain areas. When i open the DEM (.ras file) in ENVI it is no problem but there i can't do the stuff i want to process.
So, how do i read a DEM (.ras) into IDL
As for now i use READ_BINARY with the correct DATA_DIMS but all i got was a really jibberish image
Any help would be appreciated and thanks in advance!
UPDATE: Ok so i think my problem is somewh...
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2 |
1497 |
21 May 2014 01:02 AM |
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1 Replies and 1196 Views
Change background color of widget_base/widget_button 1196 1
Started by Deleted User
Hello,
I would like to change the background color of widget_base or the widget_button in Windows OS. I have not found any keyword related to this task. Any idea
Thank so much :)
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1 |
1196 |
20 May 2014 09:16 AM |
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6 Replies and 1849 Views
using ENVIRaster 1849 6
Started by Deleted User
I want to use IDL to open two rasters, clip one of the rasters according to the size of the other, and then save the new raster. I encountered an error using ENVIraster. The example code compiles, but generates an execution error: "ENVIRASTER::INIT: Incorrect number of arguments" on the line
newRaster = ENVIRaster(origData, URI=newFile, NBANDS=1)
The example code is from here: http://www.exelisvis.com/docs/enviRaster.html
Any advice how to fix this is appreciated.
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6 |
1849 |
19 May 2014 12:01 PM |
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1 Replies and 1494 Views
reading unformatted data 1494 1
Started by Deleted User
I have an odd problem I have not encountered before. I have some data (ulonarr) with no values higher than 50,000. I am writing this data to an unformatted file and after reading the data back some of the values are changed. I now have values that are extremely large (3x10^8). I have used this code on previous occasions without any issue, so I am currently at a loss as to what could be causing this.
-Steve
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1 |
1494 |
14 May 2014 12:36 PM |
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8 Replies and 2873 Views
IDL 8.3 crashes with new graphics 2873 8
Started by Deleted User
Hi,
I keep having this problem that IDL 8.3 crashes on my windows 7 machine. It mainly happens when using the new graphics functions (e.g. plot() ). The error log says it's a problem with java:
A fatal error has been detected by the Java Runtime Environment:
EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x0000000057d18848, pid=4768, tid=996
JRE version: 7.0_25-b17
Java VM: Java HotSpot(TM) 64-Bit Server VM (23.25-b01 mixed mode windows-amd64 compressed oops)
Problemati...
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8 |
2873 |
14 May 2014 09:36 AM |
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0 Replies and 1770 Views
big netcdf files 1770 0
Started by Deleted User
I cannot write large netcdf files when one dimension is unlimited whereas it works OK when no dimension is unlimited. This seems to only be linked to big files. Anyone has had that problem
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0 |
1770 |
08 May 2014 07:13 AM |
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0 Replies and 1656 Views
Adding new printers to xprinter 1656 0
Started by Deleted User
Does anyone know how to add additional printer types to xprinter It does not look like this list in /Applications/exelis/idl82/resource/xprinter has been updated since xprinter was first included with IDL.
Thanks
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0 |
1656 |
29 Apr 2014 09:53 AM |
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2 Replies and 1210 Views
BSQ file using Congrid returning only first band values 1210 2
Started by Deleted User
Hi All,
I am having an issue when using congrid on a 3 band bsq image file, where the output from the congrid is still 3 bands, the values for all the bands are only from the 1st band.
What I am trying to do is replicate the ENVI (I have v4.8) resize function programmatically in IDL (v8.01), which I have tested with this same bsq file and works correctly, but am getting the error as mentioned with congrid.
My process in IDL is that I am reading 3 separate ascii files (corresponding to the 3 ba...
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2 |
1210 |
29 Apr 2014 12:07 AM |
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1 Replies and 1302 Views
Surface function changing zoom oddly 1302 1
Started by Deleted User
Platform: Win 8.1
IDL 8.3.0 Build id: 20131115
I'm loading in a loop several 2D data files using the SURFACE function to create a video. After 2-3 data files, the zoom amount changes randomly leading to the visible xrange and yrange changing. This is a real hassle as when i go to use copywindow, the images are not coincident, so you get a very jumpy video output as a final result.
Here is the initial surface setup
s1 = surface(data,lon,lat,grid_units=2,axis_style=0,aspect_Z=0.3,perspe...
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1 |
1302 |
23 Apr 2014 08:39 PM |
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1 Replies and 1551 Views
COLORBAR function problem 1551 1
Started by Deleted User
In my code below, IDL is referring the COLORBAR function as undefined and I do not understand why the function is not being called when its proper syntax. Could someone point me in the right direction please Thanks for the help!
trmm_used *=3.
for ilat=0, num_lat-1 do begin
for ilon=0, num_lon-1 do begin
values = trmm_used&91ilon,ilat,*,0,*,*&93
values_list= where(values GE 0, amt)
if amt ge 0 then begin
rainfall_mean = mean(values&91values_...
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1 |
1551 |
22 Apr 2014 02:17 PM |
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1 Replies and 1549 Views
List of known anomalies for IDL 6.1? 1549 1
Started by Deleted User
How can I get the list of known anomalies (defects/bugs/issues) for IDL Virtual Machine Release 6.1. Or, conversely, what anomalies have been fixed in the releases since IDL 6.1
Thanks.
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1 |
1549 |
22 Apr 2014 08:21 AM |
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2 Replies and 1217 Views
using in_memory for image processing workflows 1217 2
Started by Deleted User
Hello --
I'm rather new to IDL so please, if this question is answered in some basic reference material, just point me towards it. I'm trying to set up a basic set of modis processing steps for hundreds of images. I just want to convert the hdfs (convert_modis_data), reproject to utm (envi_convert_file_map_projection), and reorder the bands (existing custom code). I'm wondering about best practices for batching multiple steps together, each of which will, by default, create a file output. It see...
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2 |
1217 |
18 Apr 2014 10:10 AM |