From 6b6842c72b28c1346ef501bc656ec3016d00e1c7 Mon Sep 17 00:00:00 2001
From: Jacek Kowalski <Jacek@jacekk.info>
Date: Mon, 10 Jun 2019 20:49:08 +0000
Subject: [PATCH] Add procedure to match TTSS to GTFS via bus positions
---
lib/mapper.php | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
parse.php | 5 +++++
2 files changed, 55 insertions(+), 0 deletions(-)
diff --git a/lib/mapper.php b/lib/mapper.php
index 453db3f..933305f 100644
--- a/lib/mapper.php
+++ b/lib/mapper.php
@@ -9,6 +9,8 @@
private $ttssTrips = [];
private $gtfsrtDate = NULL;
private $gtfsrtTrips = [];
+ private $gtfsTrips = [];
+ private $gtfsRoutes = [];
private $logger = NULL;
private $specialNames = [
@@ -42,8 +44,11 @@
continue;
}
}
+ $name = explode(' ', $vehicle->name, 2);
$this->ttssTrips[(int)$vehicle->tripId] = [
'id' => $vehicle->id,
+ 'line' => $name[0],
+ 'direction' => $name[1],
'latitude' => (float)$vehicle->latitude / 3600000.0,
'longitude' => (float)$vehicle->longitude / 3600000.0,
];
@@ -53,6 +58,29 @@
public function getTTSSDate() {
return $this->ttssDate / 1000.0;
+ }
+
+ public function loadGTFS($file) {
+ $buffer_size = 512;
+
+ $routes = fopen('phar://'.$file.'/routes.txt', 'r');
+ $route_header = fgetcsv($routes, $buffer_size);
+ while(($route = fgetcsv($routes, $buffer_size)) !== FALSE) {
+ $this->gtfsRoutes[$route[0]] = $route[2];
+ }
+ fclose($routes);
+
+ $trips = fopen('phar://'.$file.'/trips.txt', 'r');
+ $trip_header = fgetcsv($trips, $buffer_size);
+ var_dump($trip_header);
+ while(($trip = fgetcsv($trips, $buffer_size)) !== FALSE) {
+ $this->gtfsTrips[$trip[0]] = [
+ 'line' => $this->gtfsRoutes[$trip[1]] ?? NULL,
+ 'route' => $trip[1],
+ 'direction' => $trip[3],
+ ];
+ }
+ fclose($trips);
}
public function loadGTFSRT($file) {
@@ -81,6 +109,28 @@
return $this->gtfsrtDate;
}
+ public function mapUsingCoords() {
+ $level = 0.002;
+ foreach($this->gtfsrtTrips as $gkey => $gtrip) {
+ $trip = $this->gtfsTrips[$gtrip['tripId']] ?? NULL;
+
+ if($trip === NULL) continue;
+
+ foreach($this->ttssTrips as $jkey => $jtrip) {
+ echo $gtrip['latitude'].' '.$jtrip['latitude']."\n";
+ echo $gtrip['longitude'].' '.$jtrip['longitude']."\n";
+ echo $jtrip['line'].' '.$trip['line']."\n";
+ echo "\n";
+
+ if($jtrip['line'] != $trip['line']) continue;
+ if(abs($gtrip['latitude'] - $jtrip['latitude']) > $level) continue;
+ if(abs($gtrip['longitude'] - $jtrip['longitude']) < $level) continue;
+
+ echo 'MATCH '.$gtrip['num'].' '.$gkey.' '.$jkey.' ('.($jkey-$gkey).')'."\n";
+ }
+ }
+ }
+
public function findOffset() {
if(count($this->ttssTrips) == 0 || count($this->gtfsrtTrips) == 0) {
return NULL;
diff --git a/parse.php b/parse.php
index b3014b8..4651082 100644
--- a/parse.php
+++ b/parse.php
@@ -7,6 +7,8 @@
$sources = [
'bus' => [
+ 'gtfs' => 'ftp://ztp.krakow.pl/GTFS_KRK_A.zip',
+ 'gtfs_file' => 'GTFS_KRK_A.zip',
'gtfsrt' => 'ftp://ztp.krakow.pl/VehiclePositions_A.pb',
'gtfsrt_file' => 'VehiclePositions_A.pb',
'ttss' => 'http://91.223.13.70/internetservice/geoserviceDispatcher/services/vehicleinfo/vehicles',
@@ -38,6 +40,7 @@
$mapper = new Mapper();
$mapper->loadTTSS($source['ttss_file']);
+
$timeDifference = time() - $mapper->getTTSSDate();
if(abs($timeDifference) > 60) {
throw new Exception('TTSS timestamp difference ('.$timeDifference.'s) is too high, aborting!');
@@ -49,6 +52,8 @@
throw new Exception('GTFSRT timestamp difference ('.$timeDifference.'s) is too high, aborting!');
}
+ $mapper->loadGTFS($source['gtfs_file']);
+
$db = new Database($source['database']);
$logger->info('Finding correct offset...');
--
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