htdocs/stats/graph_by_promo.php

   1 <?php
   2 /***************************************************************************
   3  *  Copyright (C) 2003-2004 Polytechnique.org                              *
   4  *  http://opensource.polytechnique.org/                                   *
   5  *                                                                         *
   6  *  This program is free software; you can redistribute it and/or modify   *
   7  *  it under the terms of the GNU General Public License as published by   *
   8  *  the Free Software Foundation; either version 2 of the License, or      *
   9  *  (at your option) any later version.                                    *
  10  *                                                                         *
  11  *  This program is distributed in the hope that it will be useful,        *
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
  14  *  GNU General Public License for more details.                           *
  15  *                                                                         *
  16  *  You should have received a copy of the GNU General Public License      *
  17  *  along with this program; if not, write to the Free Software            *
  18  *  Foundation, Inc.,                                                      *
  19  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                *
  20  ***************************************************************************/
  21
  22 require_once("xorg.inc.php");
  23
  24 new_skinned_page('index.tpl', AUTH_COOKIE);
  25 $promo = Env::getInt('promo', Session::getInt('promo'));
  26
  27 // date de départ
  28 $depart = 1920;
  29
  30 //recupere le nombre d'inscriptions par jour sur la plage concernée
  31 $res = $globals->xdb->iterRow(
  32         "SELECT  promo, SUM(perms IN ('admin', 'user')) / COUNT(*) * 100
  33            FROM  auth_user_md5
  34           WHERE  promo >= $depart AND deces = 0
  35        GROUP BY  promo");
  36
  37 //genere des donnees compatibles avec GNUPLOT
  38 $inscrits='';
  39
  40 // la première ligne contient le total des inscrits avant la date de départ
  41 list($annee, $nb) = $res->next();
  42
  43 for ($i=$depart;$i<=date("Y");$i++) {
  44     if ($annee<$i) {
  45         if(!list($annee, $nb) = $res->next()) {
  46             $annee = 0;
  47             $nb = 0;
  48         }
  49     }
  50     if ($nb > 0 || $i < date("Y"))
  51         $inscrits .= $i." ".$nb."\n";
  52 }
  53
  54 //Genere le graphique à la volée avec GNUPLOT
  55 header( "Content-type: image/png");
  56
  57 $ymin = 0;
  58 $ymax = 100;
  59
  60 $fin = $i+10;
  61
  62 $gnuplot = <<<EOF2
  63 gnuplot <<EOF
  64
  65 set term png small color
  66 set size 640/480
  67 set timefmt "%d/%m/%y"
  68
  69 set xr [$depart:$fin]
  70 set yr [$ymin:$ymax]
  71
  72 set title "Nombre d'inscrits par promotion depuis $depart."
  73
  74 plot "-" using 1:2 title 'inscrits' with boxes;
  75 {$inscrits}
  76 EOF
  77 EOF2;
  78
  79 passthru($gnuplot);
  80 ?>