comp.lang.idl-pvwave archive - RDF feed
type: channel
description: Messages from Usenet group comp.lang.idl-pvwave, compiled by Paulo Penteado
items: Re: From a novice in IDL

Re: From a novice in IDL
type: item
description: Pranab J. Baruah wrote: > Hi, > > I am new to IDl and new to to this great group. Would be obliged if > anybody can help me with my programming problem. > > My program tries to do some simple data manipulation. There are say 3 > binary data files [FILE1, FILE2, FILE3] and I have to put them into > one big file where, the big file[FILE_NEW] contains 3 columns[for > three binary files] and the rows of these files come under the columns > of FILE_NEW [after transposed]. > > Now, when I try to run the program, as shown below, it get stuck with > the listed errors below when i=46, i.e. when (i*720-1)=33119 in FILE1 > of first line within the loop. ### The program worked and gave > expected results when the data dimension was less, say for binary > files of [115][100] ### > > Just can't guess why it is so. Please help !! > -----------------The Program :start------------------ > pro data_stacker_big1 > > FILE1 = read_binary('feb_2001_geo5.bsq', DATA_DIMS=[720,356]) > FILE2 = read_binary('mar_2001_geo5.bsq', DATA_DIMS=[720,356]) > FILE3 = read_binary('apr_2001_geo5.bsq', DATA_DIMS=[720,356]) > > ;Below 256320 = 720*356 > FILE_NEW=bytarr(3,256320) > > for i=1,356 do begin > > FILE_NEW[0,((i-1)*720):(i*720-1)]=FILE1[((i-1)*720):(i*720-1 )] > FILE_NEW[1,((i-1)*720):(i*720-1)]=FILE2[((i-1)*720):(i*720-1 )] > FILE_NEW[2,((i-1)*720):(i*720-1)]=FILE3[((i-1)*720):(i*720-1 )] > > endfor > > openw, lun, 'output.dat', /get_lun > printf, lun, FILE_NEW > free_lun, lun > > end > -----------------The Program :end------------------ > > -----------------Error Message while running :start------------------ > IDL> data_stacker_big1 > % Subscript range values of the form low:high must be >= 0, < size, > with low <= high: FILE1. > % Execution halted at: DATA_STACKER_BIG1 12 D:\IDL > programs\data_stacker_big1.pro > -----------------Error Message while running :end------------------ > > Thanking you in advance, > > Pranab J. Baruah > U.Tokyo IDL> i = 46 & print,((i-1)*720),(i*720-1) 32400 -32417…
creator: Robert Stockwell
date: 2002-08-21T13:28:07-00:00

Re: From a novice in IDL
type: item
description: Robert Stockwell <rgs1967@hotmail.com> wrote in message news:<3D639567.4090104@hotmail.com>... > change > "for i=1,356 do begin" > to > "for i=1L,356 do begin" > > i.e. change your variable "i" to a long. > > Cheers, > bob Dear Bob, Thanx so much for your kind and prompt reply to my message.. The program now works... Thanx a lot !!! PJ
creator: pjbaruah
date: 2002-08-22T02:44:43-00:00