Re: Re: ListPlot with missing values
- To: mathgroup at smc.vnet.net
- Subject: [mg22445] Re: [mg22419] Re: ListPlot with missing values
- From: steffenz at server2.fo.FH-Koeln.DE
- Date: Sat, 4 Mar 2000 02:26:21 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
> Date: Wed, 1 Mar 2000 00:40:15 -0500 (EST)
> From: Roy Mendelssohn <rmendels at pfeg.noaa.gov>
To: mathgroup at smc.vnet.net
> To: mathgroup at smc.vnet.net
> Subject: [mg22445] [mg22419] Re: ListPlot with missing values
> First, thanks to all who answered. I clearly didn't explain the problem
> carefully enough. Assume we are plotting a time series with missing
> data, and only want to conect consecutive points that have data, have
> blanks whenever a time point is missing, and still want points lined up
> correctly in time on the x axis. If I just delete cases, then the
> endpoints of any missing segment will be connected, rather than being
> blank.
>
> In the example
>
> alist = {{1, 1}, {2, 3}, {3,5},{4,}, {5, 6}, {6,8},{7,}, {8,10},{9, 12}}
>
> I want a line joing the first three points, then a blank, then a line
> connecting the next two points, then a blank etc.
>
> The reason I mentioned the number of datapoints is because one solution
> is to draw a graph for each uninterrupted segment of the time series,
> and then overlay them. This seems inelegant,because several hundred
> separate graphs might have to be drawn.
>
> If anyone else has other suggestions I would welcome them.
>
> -Roy M.
>
>
>
Hi Roy!
ListPlot[alist, PlotJoined -> True]
was giving me this 3 lines divided with blanks.
(I'm using Mathematica 4 on Win NT)
bye
Steffen
Dipl.-Ing. Steffen Zozgornik
Institut fur Licht- und Bautechnik
an der Fachhochschule Koln
Gremberger Strasse 151 a
D - 51105 Koln
Tel.: +49 - 221 - 83 10 95
Fax.: +49 - 221 - 83 55 13