Tag Archives: HTML

An Interactive Route Map for my Travel Blog

travelMap

See the finished project at: http://everett.x10.mx/maps/

For the last three months I have been on a backpacking trip, which is part of the reason why this blog has been so neglected for the past few months. A travel blog hosted at meandmypack.wordpress.com had taken precedence, and I habitually kept that one updated throughout my trip. With all of that over though, I’ve had to find things to do in my time to keep my self from becoming bored and lethargic with life back home in Canada. One such activity is the tying up of loose ends as far as documentation of my trip is concerned, and from early on I had it in my mind to make a nice map of all the places I went. Over time this idea evolved into a whole project in it’s own right, using Google maps and becoming more interactive and feature rich every time my mind drifted back to the idea of it. I couldn’t really spare the time to design it while in Europe, and that probably would have been a waste of the limited time I had there any way. So I stored the idea away and made a promise to my self to figure it out back home. Now some two weeks later, I’ve pulled it off.

To start, I began with the Google Maps API v3 Simple Polylines example code and then added in this code for adding in markers to the map. The poly line consists of a large number of latitude and longitude coordinates that I fetched from Google maps using the LatLng Marker plugin available through Google Maps Labs. With a stubbornness that could be mistaken for OCD, I made sure the PolyLine at least vaguely resembled my true route between major destinations by routing them through all of the intermediate stations that the train called at along the way. This was accomplished with the travel report from my Eurail Pass ( I knew I diligently filled it out for a reason), and the Eurail timetables. With these two tools, I could easily go back and find the true route of most of the train travel I did during my trip. Elsewhere when I didn’t travel by train I figured the route out through some combination of memory and Google. The markers for all of the main cities and attractions that I visited were simply made by selectively harvesting those coordinates from the Polyline list and then adding them to their own modified list with extra fields for the associated tag on my blog, and the blurb for the popup info box. I modified the marker code to put a link to the associated content on meandmypack.wordpress.com inside that popup box.  Finally I felt that it would be nice to calculate the distance travelled from the Polyline, which I did with the help of this code.

With all of the main features of the map coded, and a few hours spent finding the geospatial coordinates of my route, I had a decent looking finished product. I spent just a little more time on the layout and design of the page so that some information about the map was presented in a permanent box in the top left hand corner. I’ve also decided to post the final draft of the code below for easy viewing by all interested parties:

index.html


<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Me and My Pack Interactive Route Map</title>
    <link href="/maps/default.css" rel="stylesheet">
    <script type="text/javascript"
      src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCIxpXOSPJWNG7TnhMYq-Q2hPcM7zEQs8g&sensor=false">
    </script>
    <script>
	//Standard Google Maps API code with project specific values
	function initialize() {
	  var middleEarth = new google.maps.LatLng(52.01254, 8.2133);
	  var mapOptions = {
	    zoom: 5,
	    center: middleEarth,
	    mapTypeId: google.maps.MapTypeId.ROADMAP
	  };
	
	  var map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
	
	  //The Polyline coordinates. Lots and Lots of them.
	  var routeCoordinates = [
	      new google.maps.LatLng(51.51120, -0.11978), 	//London
	      new google.maps.LatLng(53.95795, -1.0934),
	      new google.maps.LatLng(54.9681, -1.6173),
	      new google.maps.LatLng(55.7743, -2.0110),
	      new google.maps.LatLng(55.95324, -3.18827), 	//Edinburgh
	      new google.maps.LatLng(55.982, -3.616),
	      new google.maps.LatLng(56.077, -3.923),
	      new google.maps.LatLng(56.1387, -3.9179), 	//Wallace monument
	      new google.maps.LatLng(56.17843, -4.3821), 	//Aberfoyle
	      new google.maps.LatLng(56.23381, -4.4290),	//loch katrine
	      new google.maps.LatLng(56.2440, -4.2158),
	      new google.maps.LatLng(56.18932, -4.0510),	//doune
	      new google.maps.LatLng(56.077, -3.923),
	      new google.maps.LatLng(55.982, -3.616),
	      new google.maps.LatLng(55.95324, -3.18827), 	//Edinburgh
	      new google.maps.LatLng(55.85931, -4.25836),
	      new google.maps.LatLng(54.9617, -5.0142),
	      new google.maps.LatLng(55.0317, -5.1047),
	      new google.maps.LatLng(55.0271, -5.3356),
	      new google.maps.LatLng(54.7595, -5.6473),
	      new google.maps.LatLng(54.5971, -5.930),		//Belfast
	      new google.maps.LatLng(54.852, -5.811),
	      new google.maps.LatLng(54.982, -5.996),
	      new google.maps.LatLng(55.058, -6.062),
	      new google.maps.LatLng(55.200, -6.239),
	      new google.maps.LatLng(55.24881, -6.48898),	//Giants causeway
	      new google.maps.LatLng(54.745, -6.23),
	      new google.maps.LatLng(54.5971, -5.930),		//Belfast
	      new google.maps.LatLng(54.0011, -6.4129),
	      new google.maps.LatLng(53.34980, -6.26028),	//Dublin
	      new google.maps.LatLng(53.435, -7.941),
	      new google.maps.LatLng(53.27055, -9.0566),	//Galway
	      new google.maps.LatLng(53.271, -8.918),
	      new google.maps.LatLng(53.207, -8.868),
	      new google.maps.LatLng(53.139, -8.931),
	      new google.maps.LatLng(53.114, -9.148),
	      new google.maps.LatLng(53.016, -9.375),
	      new google.maps.LatLng(52.97184, -9.42649),	//Cliffs of Moher
	      new google.maps.LatLng(53.016, -9.375),
	      new google.maps.LatLng(53.114, -9.148),
	      new google.maps.LatLng(53.139, -8.931),
	      new google.maps.LatLng(53.207, -8.868),
	      new google.maps.LatLng(53.271, -8.918),
	      new google.maps.LatLng(53.27055, -9.0566),	//Galway
	      new google.maps.LatLng(53.435, -7.941),
	      new google.maps.LatLng(53.34980, -6.26028),	//Dublin
	      new google.maps.LatLng(53.3076, -4.6310),
	      new google.maps.LatLng(53.204, -4.141),
	      new google.maps.LatLng(53.287, -3.716),	
	      new google.maps.LatLng(53.1968, -2.8798),
	      new google.maps.LatLng(51.5901, -2.9984),
	      new google.maps.LatLng(51.572, -2.649),
	      new google.maps.LatLng(51.44877, -2.5800),
	      new google.maps.LatLng(51.37737, -2.35709),    	//Bath
	      new google.maps.LatLng(51.0705, -1.8066),     	//Salisbury
	      new google.maps.LatLng(51.17885, -1.82618),    	//Stonehenge
	      new google.maps.LatLng(51.0705, -1.8066),     	//Salisbury
	      new google.maps.LatLng(51.53216, -0.12680),  	//London
	      new google.maps.LatLng(51.1086, 1.2870),
	      new google.maps.LatLng(50.9143, 1.805),
	      new google.maps.LatLng(50.62706, 3.0853),
	      new google.maps.LatLng(50.8354, 4.3355),       	//Brussels
	      new google.maps.LatLng(51.2094, 3.2246),	    	//Bruges
	      new google.maps.LatLng(50.8453, 4.3567),       	//Brussels
	      new google.maps.LatLng(51.2191, 4.421),		//Antwerp
	      new google.maps.LatLng(51.809, 4.658),
	      new google.maps.LatLng(52.0598, 4.3099),		//Den Haag
	      new google.maps.LatLng(52.3879, 4.6386),		//Haarlem
	      new google.maps.LatLng(52.3786, 4.9004),		//Amsterdam
	      new google.maps.LatLng(52.3144, 5.113),
	      new google.maps.LatLng(52.549, 5.639),
	      new google.maps.LatLng(52.514, 6.079),		//Zwolle
	      new google.maps.LatLng(53.2173, 6.564),		//Groningen
	      new google.maps.LatLng(53.2316, 7.4657),
	      new google.maps.LatLng(53.0827, 8.815),
	      new google.maps.LatLng(53.5544, 10.005),		//Hamburg
	      new google.maps.LatLng(53.8679, 10.6700),
	      new google.maps.LatLng(54.502, 11.228),
	      new google.maps.LatLng(54.652, 11.36),
	      new google.maps.LatLng(54.7671, 11.8772),
	      new google.maps.LatLng(55.6388, 12.0887),
	      new google.maps.LatLng(55.6730, 12.564),		//Copenhagen
	      new google.maps.LatLng(55.9155, 12.5007),
	      new google.maps.LatLng(55.9641, 12.5333),		//Humlebaek
	      new google.maps.LatLng(55.9155, 12.5007),
	      new google.maps.LatLng(55.6730, 12.564),		//Copenhagen
	      new google.maps.LatLng(55.6314, 12.6768),
	      new google.maps.LatLng(55.5655, 12.8917),
	      new google.maps.LatLng(55.7048, 13.1871),
	      new google.maps.LatLng(56.0443, 12.6954),
	      new google.maps.LatLng(56.5018, 12.9995),
	      new google.maps.LatLng(56.6692, 12.8658),
	      new google.maps.LatLng(57.7104, 11.9819),		//Gothenburg
	      new google.maps.LatLng(58.2876, 12.2990),
	      new google.maps.LatLng(58.9134, 11.9315),
	      new google.maps.LatLng(58.9659, 11.552),
	      new google.maps.LatLng(59.1206, 11.3859),
	      new google.maps.LatLng(59.2857, 11.1183),
	      new google.maps.LatLng(59.4319, 10.6565),
	      new google.maps.LatLng(59.7195, 10.8347),
	      new google.maps.LatLng(59.9095, 10.7598),		//Oslo
	      new google.maps.LatLng(59.913, 10.626),
	      new google.maps.LatLng(59.7407, 10.2042),
	      new google.maps.LatLng(59.7616, 9.919),
	      new google.maps.LatLng(60.052, 10.050),
	      new google.maps.LatLng(60.1688, 10.2490),
	      new google.maps.LatLng(60.4321, 9.4734),
	      new google.maps.LatLng(60.6991, 8.9698),
	      new google.maps.LatLng(60.6261, 8.5623),
	      new google.maps.LatLng(60.5356, 8.2068),
	      new google.maps.LatLng(60.4989, 8.0399),
	      new google.maps.LatLng(60.5607, 7.5869),
	      new google.maps.LatLng(60.6019, 7.5042),
	      new google.maps.LatLng(60.7352, 7.1229),
	      new google.maps.LatLng(60.6293, 6.4098),
	      new google.maps.LatLng(60.5869, 5.8148),
	      new google.maps.LatLng(60.455, 5.736),
	      new google.maps.LatLng(60.3894, 5.3354),		//Bergen
	      new google.maps.LatLng(60.455, 5.736),
	      new google.maps.LatLng(60.5869, 5.8148),
	      new google.maps.LatLng(60.6293, 6.4098),
	      new google.maps.LatLng(60.7352, 7.1229),
	      new google.maps.LatLng(60.6019, 7.5042),
	      new google.maps.LatLng(60.6019, 7.5042),
	      new google.maps.LatLng(60.5607, 7.5869),
	      new google.maps.LatLng(60.4989, 8.0399),
	      new google.maps.LatLng(60.5356, 8.2068),
	      new google.maps.LatLng(60.6261, 8.5623),
	      new google.maps.LatLng(60.6991, 8.9698),
	      new google.maps.LatLng(60.4321, 9.4734),
	      new google.maps.LatLng(60.1688, 10.2490),
	      new google.maps.LatLng(60.052, 10.050),
	      new google.maps.LatLng(59.7616, 9.919),
	      new google.maps.LatLng(59.7407, 10.2042),
 	      new google.maps.LatLng(59.913, 10.626),
	      new google.maps.LatLng(59.9095, 10.7598),		//Oslo
	      new google.maps.LatLng(60.189, 12.005),
	      new google.maps.LatLng(59.6533, 12.5912),
	      new google.maps.LatLng(59.3776, 13.4994),
	      new google.maps.LatLng(59.4182, 13.6920),
	      new google.maps.LatLng(59.2292, 14.4394),
	      new google.maps.LatLng(59.0668, 15.1098),
	      new google.maps.LatLng(58.9964, 16.2101),
	      new google.maps.LatLng(59.1790, 17.6459),
	      new google.maps.LatLng(59.3311, 18.0551),		//Stockholm
	      new google.maps.LatLng(59.3363, 18.2067),
	      new google.maps.LatLng(59.3794, 18.2948),
	      new google.maps.LatLng(59.3594, 18.4460),
	      new google.maps.LatLng(59.3970, 18.4426),
	      new google.maps.LatLng(59.4377, 18.3880),
	      new google.maps.LatLng(59.4482, 18.4287),
	      new google.maps.LatLng(59.4769, 18.4407),
	      new google.maps.LatLng(59.5045, 18.479),
	      new google.maps.LatLng(59.5757, 18.680),
	      new google.maps.LatLng(59.7195, 19.115),
	      new google.maps.LatLng(59.759, 19.319),
	      new google.maps.LatLng(60.068, 19.925),
	      new google.maps.LatLng(60.09231, 19.9279),
	      new google.maps.LatLng(60.068, 19.925),
	      new google.maps.LatLng(60.0130, 19.8542),
	      new google.maps.LatLng(59.807, 19.878),
	      new google.maps.LatLng(59.353, 22.72),
	      new google.maps.LatLng(60.146, 25.001),
	      new google.maps.LatLng(60.16780, 24.9528),	//Helsinki
	      new google.maps.LatLng(52.51630, 13.37769),	//Berlin
	      new google.maps.LatLng(51.0398, 13.7324),
	      new google.maps.LatLng(50.901, 14.221),
	      new google.maps.LatLng(50.7726, 14.2008),
	      new google.maps.LatLng(50.6595, 14.0448),
	      new google.maps.LatLng(50.5093, 14.0601),
	      new google.maps.LatLng(50.0826, 14.4353),		//Prague
	      new google.maps.LatLng(50.0309, 15.7563),
	      new google.maps.LatLng(49.8967, 16.4462),
	      new google.maps.LatLng(49.1898, 16.6130),
	      new google.maps.LatLng(48.7545, 16.8954),
	      new google.maps.LatLng(48.17483, 16.33662),	//Vienna
	      new google.maps.LatLng(48.2082, 15.6257),
	      new google.maps.LatLng(48.2896, 14.2928),
	      new google.maps.LatLng(47.8129, 13.0470),
	      new google.maps.LatLng(48.1405, 11.5569),		//Munich
	      new google.maps.LatLng(47.9854, 10.1867),
	      new google.maps.LatLng(47.54470, 9.6803),
	      new google.maps.LatLng(47.5509, 9.7194),
	      new google.maps.LatLng(47.5155, 9.7557),
	      new google.maps.LatLng(47.5035, 9.7419),
	      new google.maps.LatLng(47.4234, 9.3690),
	      new google.maps.LatLng(47.5002, 8.7228),
	      new google.maps.LatLng(47.3784, 8.5382),		//Zurich
	      new google.maps.LatLng(47.2958, 8.5636),
	      new google.maps.LatLng(47.1736, 8.5156),
	      new google.maps.LatLng(47.1801, 8.4634),
	      new google.maps.LatLng(47.0503, 8.3093),
	      new google.maps.LatLng(46.762, 8.139),
	      new google.maps.LatLng(46.7264, 8.1843),
	      new google.maps.LatLng(46.7548, 8.0368),
	      new google.maps.LatLng(46.6913, 7.8701),		//Interlaken
	      new google.maps.LatLng(46.5989, 7.9081),
	      new google.maps.LatLng(46.5753, 7.9390),
	      new google.maps.LatLng(46.5844, 7.9601),
	      new google.maps.LatLng(46.5745, 7.9742),		//Eiger trail
	      new google.maps.LatLng(46.62418, 8.0337),
	      new google.maps.LatLng(46.6328, 7.9009),
	      new google.maps.LatLng(46.6913, 7.8701),		//Interlaken
	      new google.maps.LatLng(46.7547, 7.6290),
	      new google.maps.LatLng(46.9496, 7.4396),
	      new google.maps.LatLng(46.8028, 7.1511),
	      new google.maps.LatLng(46.5161, 6.6290),
	      new google.maps.LatLng(46.5178, 6.5081),
	      new google.maps.LatLng(46.3851, 6.2366),
	      new google.maps.LatLng(46.21013, 6.1422),		//Geneva
	      new google.maps.LatLng(45.9021, 6.1204),		//Annecy
	      new google.maps.LatLng(45.6878, 5.9084),
	      new google.maps.LatLng(45.802, 5.853),
	      new google.maps.LatLng(45.95342, 5.3423),
	      new google.maps.LatLng(45.7605, 4.8613),
	      new google.maps.LatLng(43.9412, 4.8049),
	      new google.maps.LatLng(43.6849, 4.6327),
	      new google.maps.LatLng(43.5801, 4.9996),
	      new google.maps.LatLng(43.4879, 5.2307),
	      new google.maps.LatLng(43.3042, 5.3838),		//Marseille
	      new google.maps.LatLng(43.4879, 5.2307),
	      new google.maps.LatLng(43.5801, 4.9996),
	      new google.maps.LatLng(43.6849, 4.6327),
	      new google.maps.LatLng(43.8329, 4.3658),
	      new google.maps.LatLng(43.6050, 3.8816),
	      new google.maps.LatLng(43.3370, 3.2190),
	      new google.maps.LatLng(43.1899, 3.0065),
	      new google.maps.LatLng(42.544, 2.848),
	      new google.maps.LatLng(42.2649, 2.9683),
	      new google.maps.LatLng(41.9784, 2.8171),
	      new google.maps.LatLng(41.7753, 2.7407),
	      new google.maps.LatLng(41.548, 2.227),
	      new google.maps.LatLng(41.3795, 2.1418),		//Barcelona
	      new google.maps.LatLng(41.548, 2.227),
	      new google.maps.LatLng(41.7753, 2.7407),
	      new google.maps.LatLng(41.9784, 2.8171),
	      new google.maps.LatLng(42.2649, 2.9683),
	      new google.maps.LatLng(42.544, 2.848),
	      new google.maps.LatLng(43.1899, 3.0065),
	      new google.maps.LatLng(43.2172, 2.3502),
	      new google.maps.LatLng(43.61116, 1.45425),
	      new google.maps.LatLng(43.7035, 1.8137),
	      new google.maps.LatLng(43.5995, 2.2302),		//Castres
	      new google.maps.LatLng(43.7035, 1.8137),
	      new google.maps.LatLng(43.61116, 1.45425),
	      new google.maps.LatLng(44.0139, 1.3405),
	      new google.maps.LatLng(44.2079, 0.6214),
	      new google.maps.LatLng(44.8258, -0.5553),		//Bordeaux
	      new google.maps.LatLng(44.6222, -1.002),
	      new google.maps.LatLng(44.6585, -1.1653),
	      new google.maps.LatLng(44.65592, -1.25991),	//Cap ferret
	      new google.maps.LatLng(44.6585, -1.1653),
	      new google.maps.LatLng(44.6222, -1.002),
	      new google.maps.LatLng(44.8258, -0.5553),		//Bordeaux
	      new google.maps.LatLng(44.9918, -0.440),
	      new google.maps.LatLng(45.7482, -0.6182),
	      new google.maps.LatLng(46.1528, -1.1431),
	      new google.maps.LatLng(46.409, -0.892),
	      new google.maps.LatLng(47.2182, -1.5363),
	      new google.maps.LatLng(48.1027, -1.6725),		//Rennes
	      new google.maps.LatLng(48.6357, -1.5112),		//Mont Saint Michel
	      new google.maps.LatLng(48.1027, -1.6725),
	      new google.maps.LatLng(47.99541, 0.1911),
	      new google.maps.LatLng(48.8778, 2.3605),		//Paris gare de lest
	      new google.maps.LatLng(49.2588, 4.0241),
	      new google.maps.LatLng(49.1096, 6.1771),
	      new google.maps.LatLng(49.5994, 6.1355),		//Luxembourg
	      new google.maps.LatLng(49.1096, 6.1771),
	      new google.maps.LatLng(48.5851, 7.7336),		//Strasbourg	
	      new google.maps.LatLng(48.47824, 7.9475),
	      new google.maps.LatLng(48.9936, 8.4013),
	      new google.maps.LatLng(48.7848, 9.1827),		//Stuttgart
	      new google.maps.LatLng(48.9936, 8.4013),
	      new google.maps.LatLng(50.0507, 8.5709),
	      new google.maps.LatLng(50.9433, 6.9587),		//Cologne
	      new google.maps.LatLng(51.2196, 6.7936),
	      new google.maps.LatLng(51.4291, 6.7765),
	      new google.maps.LatLng(51.53123, 7.1659),
	      new google.maps.LatLng(51.9564, 7.6352),
	      new google.maps.LatLng(52.2759, 7.4342),
	      new google.maps.LatLng(52.2092, 5.9692),
	      new google.maps.LatLng(52.1541, 5.3728),
	      new google.maps.LatLng(52.3786, 4.9004),		//Amsterdam
	      new google.maps.LatLng(52.3879, 4.6386),		//Haarlem
	      new google.maps.LatLng(52.0598, 4.3099),		//Den Haag
	      new google.maps.LatLng(51.809, 4.658),
	      new google.maps.LatLng(51.2191, 4.421),		//Antwerp
	      new google.maps.LatLng(50.8453, 4.3567),       	//Brussels
	      new google.maps.LatLng(50.8354, 4.3355),       	//Brussels
	      new google.maps.LatLng(50.62706, 3.0853),
	      new google.maps.LatLng(48.8822, 2.3563)		//Paris gare du nord 
	  ];
	  
	  var routePath = new google.maps.Polyline({
	    path: routeCoordinates,
	    strokeColor: '#FF0000',
	    strokeOpacity: 1.0,
	    strokeWeight: 2
	  });
	  
	  //Use the Polyline to calculate the distance travelled for later
	  document.getElementById("distanceTravelled").innerHTML = Math.round(routePath.inKm())+' km';
	  
	  //Add the Polyline to the map canvas
	  routePath.setMap(map);
	  
	  //variables and list for the marker's to link back to the travel blog
	  var tagURL = 'http://meandmypack.wordpress.com/tag/';
	  
	  var mainCities = [
	      [51.51120, -0.11978, 'london', 'London'],
	      [55.95324, -3.18827, 'edinburgh', 'Edinburgh'],
	      [56.23381, -4.4290, 'highlands', 'Scottish Highlands'],
	      [54.5971, -5.930, 'belfast', 'Belfast'],
	      [55.24881, -6.48898, 'giants-causeway', 'Giant\'s Causeway'],
	      [53.27055, -9.0566, 'galway', 'Galway'],
	      [52.97184, -9.42649, 'cliffs-of-moher', 'Cliffs of Moher'],
	      [53.34980, -6.26028, 'dublin', 'Dublin'],
	      [51.37737, -2.35709, 'bath', 'Bath'],
	      [51.0705, -1.8066, 'salisbury', 'Salisbury'],
	      [51.17885, -1.82618, 'stonehenge', 'Stonehenge'],
	      [51.2094, 3.2246, 'bruges', 'Bruges'],
	      [50.8354, 4.3355, 'brussels', 'Brussels'],
	      [52.3786, 4.9004, 'amsterdam', 'Amsterdam'],
	      [53.2173, 6.564, 'groningen', 'Groningen'],
	      [53.5544, 10.005, 'hamburg', 'Hamburg'],
	      [55.6730, 12.564, 'copenhagen', 'Copenhagen'],
	      [57.7104, 11.9819, 'gothenburg', 'Gothenburg'],
	      [59.9095, 10.7598, 'oslo', 'Oslo'],
	      [60.3894, 5.3354, 'bergen', 'Bergen'],
	      [59.3311, 18.0551, 'stockholm', 'Stockholm'],
	      [60.16780, 24.9528, 'helsinki', 'Helsinki'],
	      [52.51630, 13.37769, 'berlin', 'Berlin'],
	      [50.0826, 14.4353, 'prague', 'Prague'],
	      [48.17483, 16.33662, 'vienna', 'Vienna'],
	      [48.1405, 11.5569, 'munich', 'Munich'],
	      [47.3784, 8.5382, 'zurich', 'Zurich'],
	      [46.6913, 7.8701, 'interlaken', 'Interlaken'],
	      [46.5745, 7.9742, 'eiger-trail', 'The Eiger Trail'],
	      [45.9021, 6.1204, 'annecy', 'Annecy'],
	      [43.3042, 5.3838, 'marseille', 'Marseille'],
	      [41.3795, 2.1418, 'barcelona', 'Barcelona'],
	      [43.5995, 2.2302, 'castres', 'Castres'],
	      [44.8258, -0.5553, 'bordeaux', 'Bordeaux'],
	      [44.65592, -1.25991, 'cap-ferret', 'Arcachon and Cap Ferret'],
	      [48.1027, -1.6725, 'rennes', 'Rennes'],
	      [48.6357, -1.5112, 'mont-saint-michel', 'Mont Saint Michel'],
	      [49.5994, 6.1355, 'luxembourg', 'Luxembourg'],
	      [48.5851, 7.7336, 'strasbourg', 'Strasbourg'],
	      [48.7848, 9.1827, 'stuttgart', 'Stuttgart'],
	      [50.9433, 6.9587, 'cologne', 'Cologne'],
	      [52.3879, 4.6386, 'haarlem', 'Haarlem'],
	      [48.8822, 2.3563, 'paris', 'Paris']	      
	  ];
	  
	  var markers = [];
	  
	  //Stick those markers into the map canvas
	  for (var i = 0; i < mainCities.length; i++) {
	    var marker = new google.maps.Marker({
	      position: new google.maps.LatLng(mainCities[i][0], mainCities[i][1]),
	      map: map
	    });
	    var infowindow = new google.maps.InfoWindow({
	      content: '<a href="'+tagURL+mainCities[i][2]+'/" target="blank">'+mainCities[i][3]+'</a>'
	    });
	
	    makeInfoWindowEvent(map, infowindow, marker);
	    
	    markers.push(marker);
	  }
	}
	
	//The info window function from http://jsfiddle.net/yV6xv/161/
	function makeInfoWindowEvent(map, infowindow, marker) {
	  google.maps.event.addListener(marker, 'click', function() {
	    infowindow.open(map, marker);
	  });
	}
	
	//The polyline distance code from https://groups.google.com/forum/#!topic/google-maps-js-api-v3/Op87g7lBotc
	google.maps.LatLng.prototype.kmTo = function(a){ 
    	  var e = Math, ra = e.PI/180; 
    	  var b = this.lat() * ra, c = a.lat() * ra, d = b - c; 
    	  var g = this.lng() * ra - a.lng() * ra; 
    	  var f = 2 * e.asin(e.sqrt(e.pow(e.sin(d/2), 2) + e.cos(b) * e.cos(c) * e.pow(e.sin(g/2), 2))); 
    	  return f * 6378.137; 
  	}
  	
  	google.maps.Polyline.prototype.inKm = function(n){ 
    	  var a = this.getPath(n), len = a.getLength(), dist = 0; 
    	    for(var i=0; i<len-1; i++){ 
      	    dist += a.getAt(i).kmTo(a.getAt(i+1)); 
    	  } 
    	  return dist; 
  	}
  	
	
	google.maps.event.addDomListener(window, 'load', initialize);
	
    </script>
  </head>
  <body>
        <div id="map-canvas" style="float:left;width:100%;height:100%;"></div>
        <div id="info-panel" style="float:right;text-align:left;">
        <div style="margin:10px;border-width:2px;float:center;text-align:center;">
          <h3>Me and My Pack Interactive Route Map</h3>
          <b>Distance Travelled: </b>
          <div id="distanceTravelled"></div><br>
          <a href="http://meandmypack.wordpress.com" target="blank">meandmypack.wordpress.com</a><br>
          <a href="http://everettsprojects.com" target="blank">everettsprojects.com</a>
    	</div>
  </body>
</html>

default.css

html, body {
  background-color:#b0c4de;
  height: 100%;
  margin: 0;
  padding: 0;
}

#map-canvas, #map_canvas {
  height: 100%;
}

@media print {
  html, body {
    height: auto;
  }

  #map-canvas, #map_canvas {
    height: 650px;
  }
}

#info-panel {
  width: 25%;
  font-size: 12px;
  position: absolute;
  top: 10px;
  left: 90px;
  background-color: #fff;
  padding: 2px;
  border: 1px solid #999;
  background: rgba(255, 255, 255, 1);
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  -ms-border-radius: 5px;
  -o-border-radius: 5px;
  border-radius: 5px;
  border: outset 1px #a1b5cf;
}

Arduino: Super Graphing Data Logger

The intensity of natural light in my basement.
Sections:

  1. Introduction
  2. The Results
  3. How to Make One For Yourself

Introduction

What is the Super Graphing Data Logger (SGDL)? It is an Arduino project that integrates data logging and the graphing of this data online using little more than an Arduino with the appropriate shields and sensors.   It differs from similar projects in that it doesn’t require a separate server or system to collect the data or to run script for the actual plot. Between the Arduino and the user’s browser, everything is taken care of.

If you just want to dive right in, the code is now posted on GitHub: https://github.com/evjrob/super-graphing-data-logger

Some time back I came across this neat javaScript based library for plotting and graphing called Highcharts JS. It didn’t take long for me to realize that charting with javaScript is very convenient for projects in which the server is limited in it’s capabilities, such as when using an Arduino with the Ethernet shield. Since the user’s browser does all the heavy lifting, the Arduino only needs to serve the files which is something it is perfectly capable of. This is especially true now that the Ethernet and SD libraries included in 1.0 support opening of multiple files simultaneously amongst other things. Thus the use of Highcharts allows us to create beautiful interactive charts based on data logged by the Arduino using nothing but the Arduino (and your browser, and a public javaScript CDN).

The Results

The best way to appreciate the final product is to actually play with it. While I’m not going to open up my home network and Arduino to the big wide internet, I have mirrored the pages and datafiles it produces on the webhost I used for my Has the World Ended Yet? project. You can find them here. These won’t be updated with new datapoints like the actual Arduino version will be, but they should at least give a fair impression of how the project looks and feels without the need to actually implement it.

For those who are unsure what they are looking at, I’ll offer a quick interpretation:

The list of data files available for graphing.
The list of data files available for graphing.

Going to the above page, we see that we are presented with a very basic list of the data files that can be selected from. Clicking any of them will cause  the graph for that datafile to be loaded (much more quickly than the Arduino can manage).

A graph for the first week of data collected.
A graph for the first week of data collected.

This chart for the 25-12-12.CSV file is already complete, and won’t have any new data added to it in the future, because the files for subsequent weeks have already been made. There is a lot to see though. The two data points that are at 1000 on the y-axis are from when I pointed a bright flashlight directly at the photo sensor. All of the data points between 300 and 400 on the y-axis are the result of the basement lights being on. The abnormally large gaps in the data are periods when the Arduino was powered off because I was still tweaking and developing it. Finally, the short humps that occur everyday are the result of natural light coming through one of the basement windows. By zooming in on one of them, we can see even more detail:

The intensity of natural light in my basement.
The intensity of natural light in my basement.

The first thing we notice is that the levels rise from zero to about 65 before falling and levelling out at close to 35 for two hours. This is followed by a another small increase before it ultimately decreases down to a value of ~10 where it levels out. That middle valley where the light levels are equal to 35 is due to the shadow cast  on the basement window by our neighbour’s house to the south of us. The levelling out of the light intensity at 10 after all the daylight has disappeared is because a light out in the hallway is usually on in the evening. It is eventually turned off for the night, causing the light levels to drop to zero where they will usually remain until the next morning. I must admit, I’m impressed that the cheap $1.00 photoresistor is capable of capturing this level of detail, and that these trends are so easily interpreted from the graphs.

How to Make One For Yourself

All of the code below is now conveniently hosted on GitHub (https://github.com/evjrob/super-graphing-data-logger) so you no longer need to copy and paste it if you don’t want to.

To replicate this project, a few things are necessary. You’ll obviously need an Arduino capable of connecting over Ethernet and storing files on an SD card. In my case, this is achieved through the use of an Uno with the Ethernet shield. Presumably an Arduino Ethernet model will also work fine, though I have not personally tested it. Other non official Ethernet shields and SD card adapters may also work if they use the same libraries, though I make no guarantees. For the more adventurous, it may be possible to adapt my code to achieve the same functionality using a Wifi shield. You will also need a data source of some sort. For my project I chose to use a very cheap photoresistor, which I rigged up on a small perf board to plug directly into the 5v, gnd, and A0 pins of my Arduino (or more precisely,  the headers on the Ethernet shield). It is set up in such a way that the minimum recordable light intensity is zero, while the maximum is 1024.

The photo sensor board fits like a charm.
The photo sensor board fits like a charm.

DSCF2931
One header is bent to reach A0.

The pins on the male headers don’t quite line up, so I intentionally used extra long ones and added a slight S-curve to the one that goes to A0. This can be seen in better detail above. For those who are interested, the circuit is very simple:

The circuit.
The circuit.

Before we get started, we need to make sure our SD card is good to go. It should be formatted as a FAT16 or FAT32 filesystem, the details of which are available on the official Arduino website. Once that is done, we need to ensure two things are present in the root directory of the card: the HC.htm file, and a data/ directory for our datafiles. The data directory is easily made with the same computer that was used to format the card provided one has an SD card reader of some sort. The HC.htm simply consists of the following code:

You will need to edit this file first to make sure it points towards the preferred  location of your highcharts.js files. You can leave this as the public CDN: http://cdnjs.cloudflare.com/ajax/libs/highcharts/2.3.5/highcharts.js, change it to point towards your own webhost, or it can even be on the Arduino’s SD card (this will be slow). It is not necessary to create a datafile before hand, the SGDL sketch will take care of that when it decides to record its first data point. Before we get that far though, it is necessary to make sure we have configured the EEPROM memory for the SGDL sketch. This is very easily accomplished using a separate sketch, which I have called EEPROM_config. This sketch (along with SGDL itself) requires an extra library called EEPROMAnything, which needs to be added to the Arduino’s libraries folder wherever one’s sketchbook folder is. While you’re at it, you should also add the Time library which we need for SGDL.

I have intentionally commented out the write line so that no one writes junk to the EEPROM by accident. While the EEPROM has a life of ~100,000 write cycles, I’d rather not waste any of them. Please review the sketch carefully and ensure you’ve adjusted it accordingly before uploading it to the Arduino. The most important thing is to ensure that your newFileTime is something sensible (in the near future most of all).

Now that that’s all taken care of, we’re ready to get SGDL all set up! The code will need a few adjustments for your own specific setup, mostly in regards to the Ethernet MAC and IP addresses. I trust that anyone making use of this code already knows how to configure their router to work with the Arduino, and that they can find the appropriate local IP address to update this sketch with. You may also wish to change the timeserver IP address to one that is geographically closer to yourself.

I currently have my code set up to make a measurement every 10 minutes, and to create a new data file every week. You are welcome to change those parameters, just be aware that the current data file management names files using a dd-mm-yy.csv date format, so the new file interval should be at least 24 hours. Another concern, is that the shorter the measurement interval and the longer the new data file interval is, the larger the files will be. Because the Arduino is not especially powerful, this will have consequences for the loading times of each chart.

Has the world ended yet? A first attempt at web development

Despite the sheer nuttiness of it, everyone keeps going on about the end of the world as “predicted” by the Mayan calendar. National Geographic even had and entire day devoted to it. Building on that theme, I decided to make a very convenient (and pretty much useless) webpage that helps you figure out if the world has in fact ended: http://everett.x10.mx/end-of-the-world.php. This project was really simple, didn’t involve a lot of code or design, and was basically thrown together over the course of an hour and a half. It turns out PHP is extremely easy if your host is already configured for it, and I’m looking forward to doing some more web development related stuff both with PHP and other languages or tools. The HTML side of the page was also relatively straightforward. I’m impressed by what’s possible design wise using modern HTML and CSS3. My inspiration on that front was this amazing site: http://www.tubalr.com/

screenshot

It works as the page implies, by polling google.com for a response. If google is down, then it is assumed the world has ended, and the result is Yes.in big red letters. The PHP that does the trick is a slightly modified version of what’s posted at the following site: http://css-tricks.com/snippets/php/check-if-website-is-available/. The background is not mine, but I’ve left attribution on the image, and you can find the originals here: http://m3-f.deviantart.com/gallery/?offset=24#/d3b4qgn.

And because I see no reason not to release it, here is the entire source code for the page:

 <?php
   function Visit($url){
     $agent = "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)";$ch=curl_init();
     curl_setopt ($ch, CURLOPT_URL,$url );
     curl_setopt($ch, CURLOPT_USERAGENT, $agent);
     curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
     curl_setopt ($ch,CURLOPT_VERBOSE,false);
     curl_setopt($ch, CURLOPT_TIMEOUT, 5);
     curl_setopt($ch,CURLOPT_SSL_VERIFYPEER, FALSE);
     curl_setopt($ch,CURLOPT_SSLVERSION,3);
     curl_setopt($ch,CURLOPT_SSL_VERIFYHOST, FALSE);
     $page=curl_exec($ch);
     //echo curl_error($ch);
     $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
     curl_close($ch);
     if($httpcode>=200 && $httpcode<300) return true;
     else return false;
   }
   if (Visit("http://www.google.com")){
     $answer = "No.";
     $colour = "green";
   }
   else{
     $answer = "Yes.";
     $colour = "red";
   }
?>

<!DOCTYPE html>
<html>
  <head>
    <title>Has the World Ended Yet?</title>
<style>
  a:link {color:#FFFFFF;}
  a:visited {color:#FFFFFF;}

html {
  overflow-y: scroll;
  background: url(/backgrounds/eow.jpg) no-repeat center center fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;

}

body {
  font-family: 'Open Sans', sans-serif;
  font-size: 24px;
  color: #fff;
  padding-bottom: 20px;
}

#main
{
  text-align: center;
  margin-top: 50px;
  margin-bottom: 20px;
  background: #000;
  background: rgba(0, 0, 0, 0.85);
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  -ms-border-radius: 5px;
  -o-border-radius: 5px;
  border-radius: 5px;
  -webkit-box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
  -moz-box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
  border: solid 1px #000;
  width:800px;
  margin-left:auto;
  margin-right:auto;
}
#result
{
  font-family: 'Open Sans', sans-serif;
  font-size: 112px;
  color: <?=$colour?>;
}

#disclaimer
{
  font-family: 'Open Sans', sans-serif;
  font-size: 12px;
  color: #fff;
  margin-top: 80px;
  margin-left: 100px;
  margin-right: 100px;
  margin-bottom: 50px;
}
</style>

  </head>
  <body>
    <div id="main">
        <H1>Has the world ended yet? <sup>*</sup></H1>
        <br>
        <div id="result">
            <b> <?=$answer?></b>
        </div>
        <div id="disclaimer">
            <sup>*</sup> Does not actually check if the world has ended. Result is based on the assumption that if Google.com is not responding, the world has probably ended. <br><br> <a href="http://everettsprojects.com">http://everettsprojects.com/</a>
        </div>
    </div>
</body>
</html>