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Re: OpenW units ... [message #40480]

Tue, 10 August 2004 08:53

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Rafael Loos writes:

> Hi, is there a way to have different units for writting in a loop?
>
> Something like that (Trying to open 6 files):
>
> For num = 0, 5 DO BEGIN
> OpenW, num , FILEPATH , /Get_Lun
> ENDFOR
>
> That does not work ... but is there a way to do that?

Well, you are overwriting your variable "num" six
times. You have the files open, alright, you just
can't reach five of them. :-)

Try this:

fileunits = IntArr(6)
For j = 0, 5 DO BEGIN
OpenW, num , FILEPATH, /Get_Lun
fileunits[j] = num
ENDFOR

Now you can access your files via the fileunits array.

OpenR, fileunits[3], ....

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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