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Re: How to handle gaps in plot? [message #45123 is a reply to message #45120]

Thu, 11 August 2005 08:14

Paul Van Delst[1]
Messages: 1157
Registered: April 2002

Senior Member

caitouer wrote:
> Hi, everyone,
> I have a question about gaps in data array. Normally when there are
> gaps in data array, people would fill the gap with extraordinary large
> or small number. Then when you use plot, IDL will detect gap
> automatically and will not connect two intervals when data is
> available. However, sometimes the data format is not so friendly. For
> example, the data file is not filled with extraordinary large or small
> number. You do not know when you have gap and how large the gap is.
> Even worse, the time is irregular. Is there a easy way to plot the
> valid data only?

Well, it's easy to find the valid data, e.g. for given MIN_VALUE and MAX_VALUE parameters for your
dependent data,

Idx = WHERE( YData GT MIN_VALUE AND YData LT MAX_VALUE, Count )
IF ( Count GT 0 ) THEN $
PLOT, XData[Idx], YData[Idx] $
ELSE $
MESSAGE, 'No valid data!'

Is this the sort of thing you mean?

paulv

--
Paul van Delst
CIMSS @ NOAA/NCEP/EMC

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[Message index]

		Re: How to handle gaps in plot? By: Craig Markwardt on Fri, 12 August 2005 21:16
		Re: How to handle gaps in plot? By: peter.albert@gmx.de on Thu, 11 August 2005 23:13
		Re: How to handle gaps in plot? By: Paul Van Delst[1] on Thu, 11 August 2005 09:40
		Re: How to handle gaps in plot? By: caitouer on Thu, 11 August 2005 09:06
		Re: How to handle gaps in plot? By: Paul Van Delst[1] on Thu, 11 August 2005 08:14
		Re: How to handle gaps in plot? By: caitouer on Mon, 22 August 2005 12:20

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