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From: sfeam <sfeam@users.sourceforge.net>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: Date Based Histogram--almost right
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Date: Tue, 30 Aug 2011 08:41:07 -0700
Organization: gnuplot development team
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rblove@gmail.com wrote:

> My one remaining issue is I have too many xtics in the date format.
> The x-axis is almost unreadable
> 
> How can I set to every other or every 3rd date? My command file looks
> like this:
> reformat(date) = date[6:7]."/".date[9:10]
> plot 'events.data' using 2:xtic(reformat(stringcolumn(1))

  reformat(date) = (column(0)%3 != 0) ? "" : date[6:7]."/".date[9:10]