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Travelling all routes thought experiment
Travelling all routes thought experiment

file:a/.box -> file:b/.box
shared_writable_dirs: shared_writable_dirs:
- /labs/tiles - /labs/tiles
- /lib/staticmaplite/cache - /lib/staticmaplite/cache
php_extensions: [pgsql,pdo,pdo_pgsql,curl] php_extensions: [pgsql, pdo, pdo_pgsql, curl]
   
file:a/include/db/trip-dao.inc.php -> file:b/include/db/trip-dao.inc.php
<?php <?php
function getTrip($tripID) function getTrip($tripID)
{ {
global $conn; global $conn;
$query = "Select * from trips $query = "Select * from trips
join routes on trips.route_id = routes.route_id join routes on trips.route_id = routes.route_id
where trip_id = :tripID where trip_id = :tripID
LIMIT 1"; LIMIT 1";
debug($query, "database"); debug($query, "database");
$query = $conn->prepare($query); $query = $conn->prepare($query);
$query->bindParam(":tripID", $tripID); $query->bindParam(":tripID", $tripID);
$query->execute(); $query->execute();
if (!$query) { if (!$query) {
databaseError($conn->errorInfo()); databaseError($conn->errorInfo());
return Array(); return Array();
} }
return $query->fetch(PDO::FETCH_ASSOC); return $query->fetch(PDO::FETCH_ASSOC);
} }
function getTripShape($tripID) function getTripShape($tripID)
{ {
global $conn; global $conn;
$query = "SELECT ST_AsKML(ST_MakeLine(geometry(a.position))) as the_route $query = "SELECT ST_AsKML(ST_MakeLine(geometry(a.position))) as the_route
FROM (SELECT position, FROM (SELECT position,
stop_sequence, trips.trip_id stop_sequence, trips.trip_id
FROM stop_times FROM stop_times
join trips on trips.trip_id = stop_times.trip_id join trips on trips.trip_id = stop_times.trip_id
join stops on stops.stop_id = stop_times.stop_id join stops on stops.stop_id = stop_times.stop_id
WHERE trips.trip_id = :tripID ORDER BY stop_sequence) as a group by a.trip_id"; WHERE trips.trip_id = :tripID ORDER BY stop_sequence) as a group by a.trip_id";
debug($query, "database"); debug($query, "database");
$query = $conn->prepare($query); $query = $conn->prepare($query);
$query->bindParam(":tripID", $tripID); $query->bindParam(":tripID", $tripID);
$query->execute(); $query->execute();
if (!$query) { if (!$query) {
databaseError($conn->errorInfo()); databaseError($conn->errorInfo());
return Array(); return Array();
} }
return $query->fetchColumn(0); return $query->fetchColumn(0);
} }
function getTimeInterpolatedTrip($tripID, $range = "") function getTimeInterpolatedTrip($tripID, $range = "")
{ {
global $conn; global $conn;
$query = "SELECT stop_times.trip_id,arrival_time,stop_times.stop_id,stop_lat,stop_lon,stop_name,stop_code, $query = "SELECT stop_times.trip_id,arrival_time,stop_times.stop_id,stop_lat,stop_lon,stop_name,stop_code,
stop_sequence,service_id,trips.route_id,route_short_name,route_long_name stop_sequence,service_id,trips.route_id,route_short_name,route_long_name
FROM stop_times FROM stop_times
join trips on trips.trip_id = stop_times.trip_id join trips on trips.trip_id = stop_times.trip_id
join routes on trips.route_id = routes.route_id join routes on trips.route_id = routes.route_id
join stops on stops.stop_id = stop_times.stop_id join stops on stops.stop_id = stop_times.stop_id
WHERE trips.trip_id = :tripID $range ORDER BY stop_sequence"; WHERE trips.trip_id = :tripID $range ORDER BY stop_sequence";
debug($query, "database"); debug($query, "database");
$query = $conn->prepare($query); $query = $conn->prepare($query);
$query->bindParam(":tripID", $tripID); $query->bindParam(":tripID", $tripID);
$query->execute(); $query->execute();
if (!$query) { if (!$query) {
databaseError($conn->errorInfo()); databaseError($conn->errorInfo());
return Array(); return Array();
} }
$stopTimes = $query->fetchAll(); $stopTimes = $query->fetchAll();
$cur_timepoint = Array(); $cur_timepoint = Array();
$next_timepoint = Array(); $next_timepoint = Array();
$distance_between_timepoints = 0.0; $distance_between_timepoints = 0.0;
$distance_traveled_between_timepoints = 0.0; $distance_traveled_between_timepoints = 0.0;
$rv = Array(); $rv = Array();
foreach ($stopTimes as $i => $stopTime) { foreach ($stopTimes as $i => $stopTime) {
if ($stopTime['arrival_time'] != "") { if ($stopTime['arrival_time'] != "") {
// is timepoint // is timepoint
$cur_timepoint = $stopTime; $cur_timepoint = $stopTime;
$distance_between_timepoints = 0.0; $distance_between_timepoints = 0.0;
$distance_traveled_between_timepoints = 0.0; $distance_traveled_between_timepoints = 0.0;
if ($i + 1 < sizeof($stopTimes)) { if ($i + 1 < sizeof($stopTimes)) {
$k = $i + 1; $k = $i + 1;
$distance_between_timepoints+= distance($stopTimes[$k - 1]["stop_lat"], $stopTimes[$k - 1]["stop_lon"], $stopTimes[$k]["stop_lat"], $stopTimes[$k]["stop_lon"]); $distance_between_timepoints+= distance($stopTimes[$k - 1]["stop_lat"], $stopTimes[$k - 1]["stop_lon"], $stopTimes[$k]["stop_lat"], $stopTimes[$k]["stop_lon"]);
while ($stopTimes[$k]["arrival_time"] == "" && $k + 1 < sizeof($stopTimes)) { while ($stopTimes[$k]["arrival_time"] == "" && $k + 1 < sizeof($stopTimes)) {
$k+= 1; $k+= 1;
//echo "k".$k; //echo "k".$k;
$distance_between_timepoints+= distance($stopTimes[$k - 1]["stop_lat"], $stopTimes[$k - 1]["stop_lon"], $stopTimes[$k]["stop_lat"], $stopTimes[$k]["stop_lon"]); $distance_between_timepoints+= distance($stopTimes[$k - 1]["stop_lat"], $stopTimes[$k - 1]["stop_lon"], $stopTimes[$k]["stop_lat"], $stopTimes[$k]["stop_lon"]);
} }
$next_timepoint = $stopTimes[$k]; $next_timepoint = $stopTimes[$k];
} }
$rv[] = $stopTime; $rv[] = $stopTime;
} }
else { else {
// is untimed point // is untimed point
//echo "i".$i; //echo "i".$i;
$distance_traveled_between_timepoints+= distance($stopTimes[$i - 1]["stop_lat"], $stopTimes[$i - 1]["stop_lon"], $stopTimes[$i]["stop_lat"], $stopTimes[$i]["stop_lon"]); $distance_traveled_between_timepoints+= distance($stopTimes[$i - 1]["stop_lat"], $stopTimes[$i - 1]["stop_lon"], $stopTimes[$i]["stop_lat"], $stopTimes[$i]["stop_lon"]);
//echo "$distance_traveled_between_timepoints / $distance_between_timepoints<br>"; //echo "$distance_traveled_between_timepoints / $distance_between_timepoints<br>";
$distance_percent = $distance_traveled_between_timepoints / $distance_between_timepoints; $distance_percent = $distance_traveled_between_timepoints / $distance_between_timepoints;
if ($next_timepoint["arrival_time"] != "") { if ($next_timepoint["arrival_time"] != "") {
$total_time = strtotime($next_timepoint["arrival_time"]) - strtotime($cur_timepoint["arrival_time"]); $total_time = strtotime($next_timepoint["arrival_time"]) - strtotime($cur_timepoint["arrival_time"]);
//echo strtotime($next_timepoint["arrival_time"])." - ".strtotime($cur_timepoint["arrival_time"])."<br>"; //echo strtotime($next_timepoint["arrival_time"])." - ".strtotime($cur_timepoint["arrival_time"])."<br>";
$time_estimate = ($distance_percent * $total_time) + strtotime($cur_timepoint["arrival_time"]); $time_estimate = ($distance_percent * $total_time) + strtotime($cur_timepoint["arrival_time"]);
$stopTime["arrival_time"] = date("H:i:s", $time_estimate); $stopTime["arrival_time"] = date("H:i:s", $time_estimate);
} }
else { else {
$stopTime["arrival_time"] = $cur_timepoint["arrival_time"]; $stopTime["arrival_time"] = $cur_timepoint["arrival_time"];
} }
$rv[] = $stopTime; $rv[] = $stopTime;
} }
} }
//var_dump($rv); //var_dump($rv);
return $rv; return $rv;
} }
function getTripPreviousTimePoint($tripID, $stop_sequence) function getTripPreviousTimePoint($tripID, $stop_sequence)
{ {
global $conn; global $conn;
$query = " SELECT trip_id,stop_id, $query = " SELECT trip_id,stop_id,
stop_sequence stop_sequence
FROM stop_times FROM stop_times
WHERE trip_id = :tripID and stop_sequence < :stop_sequence WHERE trip_id = :tripID and stop_sequence < :stop_sequence
and stop_times.arrival_time IS NOT NULL ORDER BY stop_sequence DESC LIMIT 1"; and stop_times.arrival_time IS NOT NULL ORDER BY stop_sequence DESC LIMIT 1";
debug($query, "database"); debug($query, "database");
$query = $conn->prepare($query); $query = $conn->prepare($query);
$query->bindParam(":tripID", $tripID); $query->bindParam(":tripID", $tripID);
$query->bindParam(":stop_sequence", $stop_sequence); $query->bindParam(":stop_sequence", $stop_sequence);
$query->execute(); $query->execute();
if (!$query) { if (!$query) {
databaseError($conn->errorInfo()); databaseError($conn->errorInfo());
return Array(); return Array();
} }
return $query->fetch(PDO::FETCH_ASSOC); return $query->fetch(PDO::FETCH_ASSOC);
} }
function getTripNextTimePoint($tripID, $stop_sequence) function getTripNextTimePoint($tripID, $stop_sequence)
{ {
global $conn; global $conn;
$query = " SELECT trip_id,stop_id, $query = " SELECT trip_id,stop_id,
stop_sequence stop_sequence
FROM stop_times FROM stop_times
WHERE trip_id = :tripID and stop_sequence > :stop_sequence WHERE trip_id = :tripID and stop_sequence > :stop_sequence
and stop_times.arrival_time IS NOT NULL ORDER BY stop_sequence LIMIT 1"; and stop_times.arrival_time IS NOT NULL ORDER BY stop_sequence LIMIT 1";
debug($query, "database"); debug($query, "database");
$query = $conn->prepare($query); $query = $conn->prepare($query);
$query->bindParam(":tripID", $tripID); $query->bindParam(":tripID", $tripID);
$query->bindParam(":stop_sequence", $stop_sequence); $query->bindParam(":stop_sequence", $stop_sequence);
$query->execute(); $query->execute();
if (!$query) { if (!$query) {
databaseError($conn->errorInfo()); databaseError($conn->errorInfo());
return Array(); return Array();
} }
return $query->fetch(PDO::FETCH_ASSOC); return $query->fetch(PDO::FETCH_ASSOC);
} }
function getTimeInterpolatedTripAtStop($tripID, $stop_sequence) function getTimeInterpolatedTripAtStop($tripID, $stop_sequence)
{ {
global $conn; global $conn;
// limit interpolation to between nearest actual points. // limit interpolation to between nearest actual points.
$prevTimePoint = getTripPreviousTimePoint($tripID, $stop_sequence); $prevTimePoint = getTripPreviousTimePoint($tripID, $stop_sequence);
$nextTimePoint = getTripNextTimePoint($tripID, $stop_sequence); $nextTimePoint = getTripNextTimePoint($tripID, $stop_sequence);
//echo " prev {$lowestDelta['stop_sequence']} next {$nextTimePoint['stop_sequence']} "; //echo " prev {$lowestDelta['stop_sequence']} next {$nextTimePoint['stop_sequence']} ";
$range = ""; $range = "";
if ($prevTimePoint != "") $range .= " AND stop_sequence >= '{$prevTimePoint['stop_sequence']}'"; if ($prevTimePoint != "") $range .= " AND stop_sequence >= '{$prevTimePoint['stop_sequence']}'";
if ($nextTimePoint != "") $range .= " AND stop_sequence <= '{$nextTimePoint['stop_sequence']}'"; if ($nextTimePoint != "") $range .= " AND stop_sequence <= '{$nextTimePoint['stop_sequence']}'";
foreach (getTimeInterpolatedTrip($tripID, $range) as $tripStop) { foreach (getTimeInterpolatedTrip($tripID, $range) as $tripStop) {
if ($tripStop['stop_sequence'] == $stop_sequence) return $tripStop; if ($tripStop['stop_sequence'] == $stop_sequence) return $tripStop;
} }
return Array(); return Array();
} }
function getTripStartTime($tripID) function getTripStartTime($tripID)
{ {
global $conn; global $conn;
$query = "Select * from stop_times $query = "Select * from stop_times
where trip_id = :tripID where trip_id = :tripID
AND arrival_time IS NOT NULL AND arrival_time IS NOT NULL
AND stop_sequence = '1'"; AND stop_sequence = '1'";
debug($query, "database"); debug($query, "database");
$query = $conn->prepare($query); $query = $conn->prepare($query);
$query->bindParam(":tripID", $tripID); $query->bindParam(":tripID", $tripID);
$query->execute(); $query->execute();
if (!$query) { if (!$query) {
databaseError($conn->errorInfo()); databaseError($conn->errorInfo());
return Array(); return Array();
} }
$r = $query->fetch(PDO::FETCH_ASSOC); $r = $query->fetch(PDO::FETCH_ASSOC);
return $r['arrival_time']; return $r['arrival_time'];
} }
  function getTripEndTime($tripID)
  {
  global $conn;
  $query = "SELECT trip_id,max(arrival_time) as arrival_time from stop_times
  WHERE stop_times.arrival_time IS NOT NULL and trip_id = :tripID group by trip_id";
  debug($query, "database");
  $query = $conn->prepare($query);
  $query->bindParam(":tripID", $tripID);
  $query->execute();
  if (!$query) {
  databaseError($conn->errorInfo());
  return Array();
  }
  $r = $query->fetch(PDO::FETCH_ASSOC);
  return $r['arrival_time'];
  }
function getActiveTrips($time) function getActiveTrips($time)
{ {
global $conn; global $conn;
if ($time == "") $time = current_time(); if ($time == "") $time = current_time();
$query = "Select distinct stop_times.trip_id, start_times.arrival_time as start_time, end_times.arrival_time as end_time from stop_times, (SELECT trip_id,arrival_time from stop_times WHERE stop_times.arrival_time IS NOT NULL $query = "Select distinct stop_times.trip_id, start_times.arrival_time as start_time, end_times.arrival_time as end_time from stop_times, (SELECT trip_id,arrival_time from stop_times WHERE stop_times.arrival_time IS NOT NULL
AND stop_sequence = '1') as start_times, (SELECT trip_id,max(arrival_time) as arrival_time from stop_times WHERE stop_times.arrival_time IS NOT NULL group by trip_id) as end_times AND stop_sequence = '1') as start_times, (SELECT trip_id,max(arrival_time) as arrival_time from stop_times WHERE stop_times.arrival_time IS NOT NULL group by trip_id) as end_times
WHERE start_times.trip_id = end_times.trip_id AND stop_times.trip_id = end_times.trip_id AND :time > start_times.arrival_time AND :time < end_times.arrival_time"; WHERE start_times.trip_id = end_times.trip_id AND stop_times.trip_id = end_times.trip_id AND :time > start_times.arrival_time AND :time < end_times.arrival_time";
debug($query, "database"); debug($query, "database");
$query = $conn->prepare($query); $query = $conn->prepare($query);
$query->bindParam(":time", $time); $query->bindParam(":time", $time);
$query->execute(); $query->execute();
if (!$query) { if (!$query) {
databaseError($conn->errorInfo()); databaseError($conn->errorInfo());
return Array(); return Array();
} }
return $query->fetchAll(); return $query->fetchAll();
} }
function viaPoints($tripID, $stop_sequence = "") function viaPoints($tripID, $stop_sequence = "")
{ {
global $conn; global $conn;
$query = "SELECT stops.stop_id, stop_name, arrival_time $query = "SELECT stops.stop_id, stop_name, arrival_time
FROM stop_times join stops on stops.stop_id = stop_times.stop_id FROM stop_times join stops on stops.stop_id = stop_times.stop_id
WHERE stop_times.trip_id = :tripID WHERE stop_times.trip_id = :tripID
" . ($stop_sequence != "" ? " AND stop_sequence > :stop_sequence " : "") . "AND substr(stop_code,1,2) != 'Wj' ORDER BY stop_sequence"; " . ($stop_sequence != "" ? " AND stop_sequence > :stop_sequence " : "") . "AND substr(stop_code,1,2) != 'Wj' ORDER BY stop_sequence";
debug($query, "database"); debug($query, "database");
$query = $conn->prepare($query); $query = $conn->prepare($query);
if ($stop_sequence != "") $query->bindParam(":stop_sequence", $stop_sequence); if ($stop_sequence != "") $query->bindParam(":stop_sequence", $stop_sequence);
$query->bindParam(":tripID", $tripID); $query->bindParam(":tripID", $tripID);
$query->execute(); $query->execute();
if (!$query) { if (!$query) {
databaseError($conn->errorInfo()); databaseError($conn->errorInfo());
return Array(); return Array();
} }
return $query->fetchAll(); return $query->fetchAll();
} }
function viaPointNames($tripid, $stop_sequence = "") function viaPointNames($tripid, $stop_sequence = "")
{ {
$viaPointNames = Array(); $viaPointNames = Array();
foreach (viaPoints($tripid, $stop_sequence) as $point) { foreach (viaPoints($tripid, $stop_sequence) as $point) {
$viaPointNames[] = $point['stop_name']; $viaPointNames[] = $point['stop_name'];
} }
if (sizeof($viaPointNames) > 0) { if (sizeof($viaPointNames) > 0) {
return r_implode(", ", $viaPointNames); return r_implode(", ", $viaPointNames);
} }
else { else {
return ""; return "";
} }
} }
?> ?>
file:b/labs/travelAllRoutes.php (new)
  <?php
  include ('../include/common.inc.php');
  $query = "Select route_short_name,max(route_id) as route_id from routes where route_short_name NOT LIKE '7__' AND route_short_name != '170' AND route_short_name NOT LIKE '9__' group by route_short_name order by route_short_name ;";
  debug($query, "database");
  $query = $conn->prepare($query);
  $query->execute();
  echo "<table><tr><th>Route Number</th><th>First Trip Start</th><th>First Trip End</th><th>Length</th>";
  $total = 0;
  $count = 0;
  foreach($query->fetchAll() as $r) {
  $trips = getRouteTrips($r['route_id']);
  $startTime = $trips[0]['arrival_time'];
  $endTime = getTripEndTime($trips[0]['trip_id']);
  $timeDiff = strtotime($endTime) - strtotime($startTime);
  $total += $timeDiff;
  $count ++;
  echo "<tr><td>{$r['route_short_name']}</td><td>$startTime</td><td>$endTime</td><td>$timeDiff seconds ie. ". ($timeDiff/60). " minutes</td></tr>";
 
  }
  echo "</table>";
  echo "Total time: $total seconds ie. " .($total/60/60). " hours<br>";
  echo "$count Routes";
  ?>
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GitPHP by Chris Han