function ConfigureTimeAxis(INTERVAL $iv, array &$data, array &$spec)
{
global $GRAPH_SUBSECOND_THRESHOLD;
$from = $spec['from'];
$to = $spec['to'];
if ($this->set_time_axes || $spec['from'] == $spec['to']) {
$spec['from'] = $iv->GetRequestWindowStart();
$spec['to'] = $iv->GetRequestWindowEnd();
}
$spec['length'] = dsMathPreciseSubstract($spec['to'], $spec['from']);
$from = $spec['from'];
$to = $spec['to'];
$length = $spec['length'];
if ($length > $GRAPH_SUBSECOND_THRESHOLD) {
$this->scale_start = 0;
$this->scale_coef = 1;
}
$afrom = getdate($from);
$ato = getdate($to);
$axis_info = array('ticks' => false);
if ($this->set_time_axes && $from != $to) {
$axis_info['from'] = $from;
$axis_info['to'] = $to;
} else {
// According to jpgraph.php SetScale default values
$axis_info['from'] = 1;
$axis_info['to'] = 1;
}
if ($length > 315360000) {
// 10 years
$date_format = 'Y';
$label_interval = 1;
$date_title = "";
} elseif ($length > 31104000) {
// 1 year
if ($afrom['year'] == $ato['year']) {
$date_format = 'M';
$label_interval = 2;
$date_title = $afrom['year'];
} else {
$date_format = 'M, Y';
$label_interval = 2;
$date_title = $afrom['year'] . " - " . $ato['year'];
}
} elseif ($length > 1036800) {
// 12 days
$date_format = 'M d';
$label_interval = 3;
if ($afrom['year'] == $ato['year']) {
if ($afrom['mon'] == $ato['mon']) {
$date_title = $afrom['month'] . ", " . $afrom['year'];
} else {
$date_title = $afrom['year'];
}
} else {
$date_title = $afrom['year'] . " - " . $ato['year'];
}
} elseif ($length > 86400) {
// 1 day
$date_format = 'M d, H:i';
$label_interval = 4;
if ($afrom['year'] == $ato['year']) {
if ($afrom['mon'] == $ato['mon']) {
$date_title = $afrom['month'] . ", " . $afrom['year'];
} else {
$date_title = $afrom['year'];
}
} else {
$date_title = $afrom['year'] . " - " . $ato['year'];
}
} elseif ($length > 14400) {
// 4 hours
$date_format = 'H:i';
$label_interval = 2;
if ($afrom['year'] == $ato['year']) {
if ($afrom['mon'] == $ato['mon']) {
if ($afrom['mday'] == $ato['mday']) {
$date_title = $afrom['month'] . " " . $afrom['mday'] . ", " . $afrom['year'];
} else {
$date_title = $afrom['month'] . " " . $afrom['mday'] . " - " . $ato['mday'] . ", " . $afrom['year'];
}
} else {
$date_title = date("M", $from) . " " . $afrom['mday'] . " - " . date("M", $to) . " " . $ato['mday'] . ", " . $afrom['year'];
}
} else {
$date_title = date("M j, Y", $from) . " - " . date("M j, Y", $to);
}
} else {
if ($length > $GRAPH_SUBSECOND_THRESHOLD) {
$date_format = 'H:i:s';
$label_interval = 4;
if ($afrom['year'] == $ato['year']) {
if ($afrom['mon'] == $ato['mon']) {
if ($afrom['mday'] == $ato['mday']) {
$date_title = $afrom['month'] . " " . $afrom['mday'] . ", " . $afrom['year'];
} else {
$date_title = $afrom['month'] . " " . $afrom['mday'] . " - " . $ato['mday'] . ", " . $afrom['year'];
}
} else {
$date_title = date("M", $from) . " " . $afrom['mday'] . " - " . date("M", $to) . " " . $ato['mday'] . ", " . $afrom['year'];
}
} else {
$date_title = date("M j, Y", $from) . " - " . date("M j, Y", $to);
}
} else {
$ifrom = floor($from);
if (is_float($from)) {
$rfrom = substr(printf("%.9F", $from - $ifrom), 2);
} else {
$pos = strpos($from, ".");
if ($pos === false) {
$rfrom = 0;
} else {
$rfrom = substr($from, $pos + 1);
}
}
$date_title = date("M j, Y H:i:s", $ifrom);
if ($rfrom) {
$date_title .= "." . $rfrom;
$rfrom = "0.{$rfrom}";
}
if ($length > $this->width / 1000) {
$coef = 1000;
$suffix = "ms";
} elseif ($length > $this->width / 1000000) {
$coef = 1000000;
$suffix = "us";
} else {
$coef = 1000000000;
$suffix = "ns";
}
$reallength = floor($length * $coef);
$rem = ($reallength + 10) % 1000;
if ($rem < 20) {
$ilength = $reallength - ($rem - 10);
} else {
$ilength = $reallength;
}
$date_title .= " + " . $ilength . $suffix;
$first_num = substr($ilength, 0, 1);
$second_num = substr($ilength, 1, 1);
if ($second_num > 4) {
if (++$first_num == 10) {
$istep = "1" . str_repeat("0", strlen($ilength) - 1);
} else {
$istep = $first_num . str_repeat("0", strlen($ilength) - 2);
}
} else {
$istep = $first_num . str_repeat("0", strlen($ilength) - 2);
}
$axis_info['from'] = 0;
$axis_info['to'] = $reallength;
// + 1;
$axis_info['ticks'] = array($istep, $istep / 4);
$ticks = floor(($ilength + 1) / $istep);
if ($this->width < 350) {
if ($this->width < 70) {
$lpt = $ticks;
} else {
$lpt = ceil($ticks / ($this->width / 70));
}
} else {
$lpt = round($ticks / 5);
}
$date_format = false;
$label_interval = $lpt;
// Replacing timings with offsets from interval begining (in ns/us/ms)
foreach ($data as &$gdate) {
foreach ($gdate['time'] as &$t) {
strstr($t, ".");
$it = floor($t);
$pos = strpos($t, ".");
if ($pos === false) {
$rt = 0;
} else {
$rt = "0." . substr($t, $pos + 1);
}
$t = ($it - $ifrom) * $coef + floor(($rt - $rfrom) * $coef);
}
}
$this->scale_start = $from;
$this->scale_coef = $coef;
}
}
$axis_info['date_title'] = $date_title;
$axis_info['date_format'] = $date_format;
$axis_info['label_interval'] = $label_interval;
return $axis_info;
}
