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Re: continuous update of plot [message #9240 is a reply to message #9128]

Wed, 04 June 1997 00:00

rivers
Messages: 228
Registered: March 1991

Senior Member

In article <slrn5p63uq.q12.vetoulis@dyson.umd.edu>, vetoulis@dyson.umd.edu (�� ) writes:

> suppose I have a simulation that every so often writes out a 2d array.
> Is there a way for idl to detect that the file has changed, and
> replot or display the new data?
> This would be under unix (digital and/or sparc) with the data
> being produced by fortran.
>
> I suppose that even a delay loop would serve, in the sense that
> it would redisplay the file every, say, 10 sec irrespectively of
> whether it changed or not. But this sounds wasteful.
>

The simplest way is to just spawn 'ls -l filename' periodically to see if the
file has changed.

IDL> spawn, 'ls -l chart1.ps', result
IDL> print, result
-rw-r--r-- 1 epics epics 163527 Jan 11 12:29 chart1.ps
IDL> print, strmid(result, 41, 12)
Jan 11 12:29

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[Message index]

		Re: continuous update of plot By: David Foster on Tue, 03 June 1997 00:00
		Re: continuous update of plot By: Tim Patterson on Mon, 02 June 1997 00:00
		Re: continuous update of plot By: rivers on Wed, 04 June 1997 00:00
		Re: continuous update of plot By: R. Bauer on Wed, 04 June 1997 00:00

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