Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!gegeweb.42!gegeweb.eu!nntpfeed.proxad.net!proxad.net!feeder1-1.proxad.net!198.186.190.251.MISMATCH!news-out.readnews.com!transit4.readnews.com!postnews.google.com!e35g2000yqc.googlegroups.com!not-for-mail From: derrapf Newsgroups: comp.graphics.apps.gnuplot Subject: parsing of alphanumeric columns; plotting fences Date: Tue, 19 Jul 2011 04:29:49 -0700 (PDT) Organization: http://groups.google.com Lines: 39 Message-ID: NNTP-Posting-Host: 82.210.232.252 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 X-Trace: posting.google.com 1311077439 29492 127.0.0.1 (19 Jul 2011 12:10:39 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Tue, 19 Jul 2011 12:10:39 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: e35g2000yqc.googlegroups.com; posting-host=82.210.232.252; posting-account=7pnSVAkAAAAuOuaNOY21Z45JzPn6wOfx User-Agent: G2/1.0 X-HTTP-Via: 1.1 wipx01.wirtgen.dmz:8080 (squid/2.7.STABLE9) X-Google-Web-Client: true X-Google-Header-Order: HUALESRCVFNK X-HTTP-UserAgent: Mozilla/5.0 (Windows NT 5.1; rv:2.0) Gecko/20100101 Firefox/4.0,gzip(gfe) Xref: x330-a1.tempe.blueboxinc.net comp.graphics.apps.gnuplot:451 Hi alle Searched a lot but did not find an answer. May somebody of you has an idea: I have a data file providing the following tab separated data format: #date time total 2011-06-27 13:19:26 2339 2011-06-27 13:35:50 3322 2011-06-27 13:37:13 2740 2011-06-27 14:19:26 2339 Where "total" should be the z-coordinate, time the x-coordinate, and date the y-coordinate I would like to have the totals of each day in a kind of 3D fences plot, so that I can compare the totals of each day easily (see also: "fence plot" in http://www.gnuplot.info/demo/surface1.html). To manage the x-coordinate from column 2, I set up: set xdata time set timefmt "%H:%M:%S" set format x "%H:%M:%S" But how can I now extract the day as an y-coordinate from column 1? My approach to plot some kind of fence was: splot "datafile.txt" using 2:$1[9:10]:13:xticlabels(2) with lines but that did not work. I always get an error: "internal error: substring range operator applied to non-STRING type" Would it be easier if I created a separate data-file for each day? If yes how could I then plot fences of each day? I appreciate any help Best regards Ralf