--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/htdocs/24hours.php	Mon Aug 25 12:34:26 2008 -0400
@@ -0,0 +1,60 @@
+<?php
+
+require('../stats-fe.php');
+require('../graphs.php');
+require('../timezone.php');
+
+$first_channel = array_keys($stats_data['messages']);
+$first_channel = $first_channel[0];
+$channel = ( isset($_REQUEST['channel']) && isset($stats_data['messages'][$_REQUEST['channel']]) ) ? $_REQUEST['channel'] : $first_channel;
+
+// generate the data
+// we're doing this by absolute hours, not by strictly "24 hours ago", e.g. on-the-hour stats
+$this_hour = gmmktime(gmdate('H'), 0, 0);
+$graphdata = array();
+
+for ( $i = 23; $i >= 0; $i-- )
+{
+  $basetime = $this_hour - ( $i * 3600 );
+  $ts = date('H:i', $basetime);
+  $basetime += 3600;
+  $graphdata[$ts] = stats_message_count($channel, 60, $basetime);
+}
+
+$max = max($graphdata);
+
+// Determine axis interval
+$interval = 2;
+if ( $max > 20 )
+  $interval = 4;
+if ( $max > 25 )
+  $interval = 5;
+if ( $max > 50 )
+  $interval = 10;
+if ( $max > 200 )
+  $interval = 40;
+if ( $max > 500 )
+  $interval = 80;
+if ( $max > 1000 )
+  $interval = 100;
+if ( $max > 2000 )
+  $interval = 200;
+if ( $max > 5000 )
+  $interval = 1000;
+if ( $max > 15000 )
+  $interval = 1500;
+if ( $max > 30000 )
+  $interval = round($max / 10);
+
+$g = new GraphMaker(); // _Compat();
+
+$g->SetGraphPadding(20, 30, 20, 15);
+$g->SetGraphAreaHeight(200);
+$g->SetBarPadding(10);
+$g->SetBarData($graphdata);
+$g->SetGraphBackgroundTransparent(240, 250, 255, 0);
+$g->SetGraphTransparency(25);
+$g->SetAxisStep($interval);
+$g->SetGraphTitle($channel . ' message count - last 24 hours');
+
+$g->DrawGraph();