idl vm- widget_base - bitmap keyword

Hi all, I am trying to run an application (.sav file) using idl vm (version 6.3/4). I get the following error message. "The following error was encountered: keyword BITMAP not allowed in call to: WIDGET_BASE" please consult... I want to read a bitmap (a logo) and display it on the GUI using the widget_base function. Here is the part of the code.. file = 'logo.bmp' osl_bmp = (file_search(ProgramRootDir(/oneup), file))[0] p3dBase = WIDGET_BASE( GROUP_LEADER=wGroup,$ bitmap= osl_bmp, xsize=xs, ........) any idea about the error? (Of course the codes work in

file_mkdir error

Hi, first I tried with the spawn command to create a directory but file_mkdir seems to be the easy way. But: when I use it inside a terminal it works fine. The folder gets created and I can cd, ' foldername' to it. When I use it inside my pro it seem to create the folder but I can not access it with cd,'foldername'. Neither with terminal (no such file ...). Ls shows the folder. I can access it with Dolphin. commands: e.g. terminal: file_mkdir,'test',/NOEXPAND_PATH works fine e.g. pro: file_mkdir,resultpath,/NOEXPAND_PATH only seems to work Is this

IDL invoked by cron, turning into zombie (hanging, not crashing)

IDL People, This could easily be some sysadmin-type issue on my system, but I wanted to find out if anyone had observed this behavior. I have a cron job that runs an IDL script every six hours. From time to time, it seems, the script does not complete. This would mean my script has a problem, but what's vexing here is HOW it does not complete: -- no errors; -- IDL doesn't exit; -- what's really bad: the license is not released. The last two are "inconsistent with my expectations" (read: WTF) for non-interactive jobs with IDL. Anyone else experienced this type of probl

finite difference method (iteration) in IDL

I have a heat transfer problem that needs to be solved using finite difference method. I have all the equations at all nodal points (it is a 2 X 200 array). I was trying to solve this using microsoft excel but turns out that the numbers I am getting for each nodal points are not reasonable. Anybody have any idea how this could be set up in IDL and solve these equations iteratively using finite difference method. Thanks very much, Mahesh

color tiffs

I can't seem to get tiffs written out in color. Silly, but true. IDL> write_tiff,'title',(array[*,*,2]),/float I get a grey scale image even when I've set device,decomposed=0 and loaded a color table (39). The resulting file is larger compared to the black and white tiffs I produced with bytscl'ing', but it is not in color. Any suggestions? Thanks!

about the blackbody radiation curve

PRO radiation h=6.626068e-27; k=1.38066e-16; c=2.997925e+10; t=6000; x=findgen(100)*0.0000001; a=2*h*(c^2)*(x^(-5)); if x=0 then begin y=0 endif else begin y=(a)/ (exp((h*c)/(k*x*t))-1) endelse plot,x,y END

Multi-page graphics in IDL 8

We frequently use direct graphics and !P.MULTI to generate graphics output where there are multiple plots on multiple pages. It is not hard to make this work either to the display or to a PS file. When drawing to the display you can wait for a <cr> before moving to the next page. When creating PS, you just draw all the plots to a single file. The PS file can then be easily converted to a multi-page PDF file. With the new Graphics system, I can see how to draw multiple plots in a single window, but not how to create multi-page graphics. Is the concept of multi-page graphics not

object association

Hi guys, I'm using IDL 7.0... Do you know if there is a way to use the attributes of an associated object without using GetProperty and SetProperty methods ? An example: ############################# ## Class a FUNCTION a::Init RETURN, 1 END PRO a__define struct = { a, int: 0, str: '' } END ## Class b FUNCTION b::Init, a self.reference=a RETURN, 1 END PRO b::test self.reference.int=9 END PRO b__define struct = { b, $ reference: OBJ_NEW() } END ############################# My code will be something like: a=OBJ_NEW('a') b=

Insert an image in Excel

I am interested in inserting an image into Excel spread sheet, something like ;================ Pro IDL_Write_Excel_Col, FILENAME=FileName ; Create an instance of an Excel Application Object oExcel = obj_new("IDLcomIDispatch$PROGID$Excel_Application") if ~oExcel then return ; Set this property to 0 to hide the Excel Application oExcel->SetProperty, visible=1 ; Obtain a reference to the workbook object and add new oExcel->GetProperty, Workbooks=oWkbks oWkbks->Add oWkbks->GetProperty, 'Book1', Item=oBookData ; Get a reference to the sheets collection oBookD

IDL/DLM segmentation fault on reset

Hi, Have an interesting problem for DLM programmers out there. I have a C code for Linux that sets an environment variable using putenv() within a DLM. The code executes as designed but when I issue a .full_session_reset I get a segmentation fault and IDL exits ungracefully. I run the same code (with slightly different calling convention) under Windows without problems. Does anyone know why? Do I need some sort of exit handler for the DLM (similar to IDL_Load for startup)? Haje

Workspace Path Variable?

All, Is there a system variable which contains the current workspace path name? Nothing shows up when I run hel, /system_variables ..... Thanks, Bill

How to read first and last line of an ascii file FAST

Hello group, My data is stored in a bunch of ascii files, each 5-10MB big. Each line represent a sample with a timestamp. I would like to analyse all my files by reading the timestamp from the first and last line of every file. Getting the timestamp from the last line is the issue here. Right now I'm doing it like readf, fid, firstline nlines = FILE_LINES(fnames[i]) skip_lun, fid, nlines-2, /LINES readf, fid, lastline skip_lun is really slow when the files are big and numerous. Does anyone have a tip of I could do this faster? Is there a way to directly point to the en

problems with EOS_GD_EXTRACTREGION

I'm trying to run EOS_GD_EXTRACTREGION and I keep getting a fatal error warning, and then ENVI/IDL crashes. Yikes! I'm not sure what is wrong. My results from EOS_GD_CREATE and EOS_GD_DEFBOXREGION are ok.... Any suggestions? The code: pro hdf_eos_extractpix_region ;find all the hdf-eos files in a folder and open for use path = 'X:\MODIS_GPP\Lena\2006\test' file_array=file_search(path, '*.hdf', count=num_file) file=file_array print, num_file print, file for i=0, num_file-1 do begin file_name=file_basename(file[i], '.hdf') ;print, file_name fid=EOS_GD_OPE

convert image DN to unique values

Hi, I have an image where all the DNs are 0. I need to change the pixel values to numbers that increase by 1 according to pixel location in the array. For example: 1,2,3,4,5,6,7..... 700. It seems like it should be easy to do... Any suggestions? Thanks!

ESRI shape file

Folks I have some (lon, lat, Z) data (data with coordinates) and I want to save this data in .shp (ESRI shape file) file (in GIS it is so easy). Does anyone have any idea? Cheers, Dave P.S. I wish David was here because he has lots of experience in shape files data:-(

Constrained fit of a straight line: fixed intercept

Hi, I am not sure how easy this problem is, but it sure gave me hell today. I have the following vector arrays: X, Y, & Y_errors. There are 5 elements in each and they do form a nice line describes by Y = A + BX. I need to fit this line with B as a free parameter and constrain A to pass by the the third point. So the problem narrows down to one parameter as: Y = (Y0 - BX0) + BX, whre Y0 and B0 and the third point values (i.e., X[2] and Y[2]). I tried using MPFIT with the PARINFO keyword. It just didn't work. Any ideas? Thanks.... -Joe

7-Zip DLL

Looking for ways to use the 7-Zip DLL to compress the contents in a folder with IDL. Any thoughts? Kelly Dean Fort Collins, CO

Search across open .pro files

Hi, I am trying to search across ALL .pro files that are open in the editor in IDL 8, but I cannot figure how to do that. "Find" only searches the current document and I cannot get "Search" to return any results. What am i missing about this simple task? Thanks, Haje

Fractal anakysis

What about fractal analysis in the IDL now?

widget_table crash IDL8.0

Hi IDL8.0 crashes when I try editing the values of a widget_table. It doesn't seem to happen under windows. Does anyone experience the same problem (test code below)? My version: { x86 linux unix linux 8.0 Jun 18 2010 32 64} Test code: pro test_event,ev end pro test base=widget_base(title='tst') table=widget_table(base,value=fltarr(4,2),/editable) widget_control,base,/realize xmanager,'test',base,/no_block end

Help on text data

Folks I am reading some text data (I don=92t know how many) like this: pathName=3D"d:\p\" List =3D findfile(pathName+"*.dat") nosFiles=3DN_ELEMENTS(List) data =3D ptrarr(nosFiles) for i =3D 0, nosFiles - 1 do begin x=3Dread_ascii(list[i]) data[i] =3D ptr_new(x) endfor I want to put this data in a string like this: names =3D ['data[0]', ' data[1]', ' data[2]',=85] to proceed David=92s name_selctor. I do not know how to do that. Any help highly would be appreciated Cheers, Dave

Matching 2 lists

Hi there, I'm wondering if someone can help me. I'm trying to match two lists of stars together. Where I differ from the standard 1-1 match that match_2d.pro does so well is that I would like to be able to compute a 1-many match. I.e find any star in list B that is a possible match to a single star in list A not just the closest. Many thanks for any help that someone can provide David

jpeg exif

Just curious, are there are any existing jpeg - exif I/o routines out there? I've googled around, and other there doesn't seem that there is much interest in it. cheers, bob

FITS WCS routines

Does anyone know of a good IDL implementation or wrapper of up-to-date routines to deal with world coordinate systems in FITS files? The ones in the astronomy library aren't sufficient - in particular, I need something that can deal with a TNX coordinate system (tangent point plane with distortions). Basically exactly like the astronomy library's ADXY and XYAD routines, but that can deal with the full WCS standard. Thanks, -Jeremy.

exporting floats

It may sound easy, but i don't figure out how it works. I want to export a floating point variable I produced in IDL to use it in a GIS. Everything I export through the iTools ends in integers, but I need to keep the original float values! who can help me? Martin