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Re: can i read multiple files? [message #50289 is a reply to message #50196]

Tue, 19 September 2006 05:08

Braedley
Messages: 57
Registered: September 2006

Member

zircola wrote:
> hi..i am relatively new to idl. i got to this newsgroup through
> dfanning website..now i was thinking if i can read multiple files at
> the same time in one procedure. can this be done in idl?
> thanks

An addendum to David's post, setting the multiple keyword in
dialog_pickfile will return a string array of all the selected files,
then it's just a matter of for looping through the array and opening
each one, such as:

files=dialog_pickfile(/multi, filter=filter, path=path, title=title)
n_files=n_elements(files)
for i=0, n_files-1 do begin
;Read the file. In this case, we'll say it's one line of ASCII
openr, lun, /get_lun, files[i]
readf, lun, data
data=fix(data)
free_lun, lun
;Perform the remainder of the analysis for this data
endfor

It's probably not a good idea to load every file into a variable at
once unless each file is small and uniform, as that can quickly take up
memory.

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[Message index]

		can i read multiple files? By: zircola on Mon, 18 September 2006 17:46
		Re: can i read multiple files? By: David Fanning on Thu, 21 September 2006 19:46
		Re: can i read multiple files? By: zircola on Mon, 25 September 2006 00:07
		Re: can i read multiple files? By: zircola on Thu, 21 September 2006 18:05
		Re: can i read multiple files? By: Paul Van Delst[1] on Thu, 21 September 2006 12:53
		Re: can i read multiple files? By: Braedley on Thu, 21 September 2006 11:31
		Re: can i read multiple files? By: David Fanning on Tue, 19 September 2006 21:22
		Re: can i read multiple files? By: zircola on Tue, 19 September 2006 20:38
		Re: can i read multiple files? By: zircola on Tue, 19 September 2006 20:18
		Re: can i read multiple files? By: Braedley on Tue, 19 September 2006 05:08

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