$max_time = 0;
$min_val = 0;
$max_val = 0;
while ($rsrow = mysql_fetch_assoc($res)) {
if ($i == 0) {
$min_time = $rsrow['time'];
$min_val = $rsrow['value'];
}
if ($min_val > $rsrow['value']) {
$min_val = $rsrow['value'];
}
if ($max_val < $rsrow['value']) {
$max_val = $rsrow['value'];
}
$max_time = $rsrow['time'];
$graph->addPoint($rsrow['value'], $rsrow['time'] - $min_time);
++$i;
}
if ($end_date == 0) {
$end_date = mktime(0, 0, 0, date('m'), date('d'), date('Y'));
}
$val_dif = $max_val - $min_val;
$yscale = 7;
for ($i = 4; $i <= 10; ++$i) {
// find a divisor
if ($val_dif % $i == 0) {
$yscale = $i;
break;
}
}
$graph->setProp('scale', 'date');
