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Re: overwrite output to screen; unix vs windows [message #80651 is a reply to message #80646]

Wed, 27 June 2012 09:32

lecacheux.alain
Messages: 325
Registered: January 2008

Senior Member

On 27 juin, 01:00, jde...@gmail.com wrote:
> I'd like to print a status that runs inside a for loop and gets overwritten after each iteration, so as not to flood the screen. In unix, you can do it like this:
>
> (unix, good)
> IDL> for i=1, 5 do print, i, format='("' + string(13b) + '",i3,"% complete",$)' & print, ''
> 5% complete
>
> which prints " 1% complete", the "string(13b)" is a carriage return, but the "$" tells it to continue on the same line, so it is promptly overwritten by " 2% complete" and so on until it finishes at " 5% complete", all on the same line. The final print, '' is outside the loop and just resets the IDL prompt when it's done. In this simple example, it happens so fast you only see the final output.
>
> However, the same line, executed in windows, prints it on 5 separate lines:
>
> (windows, bad):
> IDL> for i=1, 100 do print, i, format='("' + string(13b) + '",i3,"% complete",$)' & print, ''
>
> 1% complete
> 2% complete
> 3% complete
> 4% complete
> 5% complete
>
> Is there a way to get the unix behavior in windows?
>
> Thanks,
> Jason
>
>

You can use a combination of T and $ formats:
IDL> print,indgen(10),FORMAT='(10(T1,i4,$))' & print
9

alx.

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[Message index]

		Re: overwrite output to screen; unix vs windows By: lecacheux.alain on Wed, 27 June 2012 15:21
		Re: overwrite output to screen; unix vs windows By: jdeast on Wed, 27 June 2012 12:27
		Re: overwrite output to screen; unix vs windows By: David Fanning on Wed, 27 June 2012 10:52
		Re: overwrite output to screen; unix vs windows By: David Fanning on Wed, 27 June 2012 10:18
		Re: overwrite output to screen; unix vs windows By: jdeast on Wed, 27 June 2012 09:59
		Re: overwrite output to screen; unix vs windows By: lecacheux.alain on Wed, 27 June 2012 09:32
		Re: overwrite output to screen; unix vs windows By: David Fanning on Wed, 27 June 2012 09:03
		Re: overwrite output to screen; unix vs windows By: cgguido on Wed, 27 June 2012 08:49
		Re: overwrite output to screen; unix vs windows By: jdeast on Wed, 27 June 2012 08:37
		Re: overwrite output to screen; unix vs windows By: David Fanning on Tue, 26 June 2012 17:23
		Re: overwrite output to screen; unix vs windows By: jdeast on Sat, 30 June 2012 14:50

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