source: branches/0.6-stable/lib/GnuplotFE.cc @ 430

// $Id: GnuplotFE.cc 430 2007-07-06 23:33:11Z peter $

/*
  Copyright (C) 2006 Jari Häkkinen

  This file is part of svndigest, http://trac.thep.lu.se/trac/svndigest

  svndigest is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  svndigest is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  02111-1307, USA.
*/

#include "GnuplotFE.h"
#include "Gnuplot.h"

#include <cassert>
#include <string>
#include <sstream>


namespace theplu {
namespace svndigest {


  GnuplotFE* GnuplotFE::instance_=NULL;


  void GnuplotFE::plot(std::vector<u_int>& y, const std::string& format)
  {
    if (!date_.empty()) {
      assert(date_.size()>=y.size());
      if (date_.size()!=y.size()) {
        y.reserve(date_.size());
        for (size_t i=y.size(); i<date_.size(); ++i)
          y.push_back(*y.rbegin());
      }
      command(std::string("set xdata time"));
      command("set timefmt '" + date_input_format_ + "'");
      command("set format x '" + format + "'");
      Gnuplot::plot(y,date_);
      command(std::string("set xdata"));
    }
    else
      Gnuplot::plot(y);
  }


  void GnuplotFE::replot(std::vector<u_int>& y)
  {
    if (!date_.empty()) {
      assert(date_.size()>=y.size());
      if (date_.size()!=y.size()) {
        y.reserve(date_.size());
        for (size_t i=y.size(); i<date_.size(); ++i)
          y.push_back(*y.rbegin());
      }
      command(std::string("set xdata time"));
      Gnuplot::replot(y,date_);
      command(std::string("set xdata"));
    }
    else
      Gnuplot::replot(y);
  }


  double GnuplotFE::yrange(double ymax)
  {
    if (ymax<0)
      ymax=0;
    std::ostringstream cmd;
    cmd << "set yrang[0:";
    if (ymax)
      cmd << ymax;
    cmd << "]";

    command(cmd.str());
    return ymax;
  }


}} // end of namespace svndigest and namespace theplu