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JavaScript - Google Maps Api - Compare Driving Distances Without Displaying Locations
I'm trying to make something a lot like a store locator where a user types in their address of origin and submits, then the script compares the driving distances between their entered address and the 4 destination locations that I will store in an array once the page loads.
It's kind of hard to describe. I have a form working to do the distance and driving directions once I know which destination will be chosen. This is what I have so far: http://rowsdower.freehostia.com/map_test.php That seems to be working just fine. The problem is that I just can't get anything working that will compare the distance between the origin and each of the options before choosing and displaying directions to the nearest destination. My ultimate goal is to update the list of <options> with PHP and maybe MySQL - though I really don't need this to be large-scale. Then, after the user inputs a starting address if they choose a specific location from the dropdown it will give those directions, otherwise (if the "choose closest location" option is still active) then I will run a comparison of driving distances for each option's address value and store them to an array. Once all locations are read and tested for driving distance I want to take the closest location set that option as selected, and then run the call for driving directions as usual. I know how to pull the option values, how to set and unset the "selected" attribute, and how to check to see if distances need to be compared. I can figure out how to do just about everything I need EXCEPT for getting the google maps API to play along. I've tried so many dead-end ideas that I have just reset my map code to square one. Any ideas for a script piece to run that will return only the driving distance for a list of locations? The onclick event listener would be something like this Code: Array.prototype.findIndex = function(value){
var ctr = "";
for (var i=0; i < this.length; i++) {
// use === to check for Matches. ie., identical (===), ;
if (this[i] == value) {
return i;
}
}
return ctr;
};
// ===== request the directions =====
function getDirections() {
document.getElementById("directions").style.display="block"; //displays the directions container
var saddr = document.getElementById("search1").value; //the user's origin
var daddr = document.getElementById("search2").value; //the selected destination
if (daddr=="Closest Location") {
var distances = [0];
for (i=1;i<document.getElementById("search2").options.length;i++) {
//setting i=1 so I skip the "closest Location" option...
if (document.getElementById("search2").options[i].selected) {
document.getElementById("search2").options[i].removeAttribute("selected"); // de-select each option as we go just in case...
}
var destination = document.getElementById("search2").options[i].value; // pulling up the stored address
//run driving directions comparison here then set "daddr" to the address whose driving distance is least
distances[i]=getDrivingDistance(saddr,destination); /* <----- I just made this up, I don't really know
how to get this done but I want it to be as
simple as this somehow...*/
}
daddr = distances.findIndex(distances.min()); // Finds index of the lowest driving distance
document.getElementById("search2").options[daddr].setAttribute("selected","selected"); // marks closest location as selected
daddr = document.getElementById("search2").options[daddr]; // sets destination address to same index as least distance index
}
// at this point I have either the user-defined destination or else the closest destination, so I find the directions...
var locale = getLocale();
var dirOpts = {
locale: locale,
getPolyline: true
};
if (document.getElementById("walkingDirections").checked) {dirOpts.travelMode = G_TRAVEL_MODE_WALKING;}
if (document.getElementById("avoidHighways").checked) {dirOpts.avoidHighways = true;}
if (mapPreserveViewport) {
dirOpts.preserveViewport = true
}
gdir.load("from: "+saddr+" to: "+daddr, dirOpts);
}
I'm going cross-eyed trying to get this working. Does anyone have any ideas for a code blurb to tie this all together? I think everything else should work once I get through the distance iterations but I'm useless with the google maps API... Similar TutorialsI am currently working on a project that requires me to get data from a mySQL database in order to create multiple (bar) graphs. I will then display these graphs in the corresponding location using Google Maps. I am having trouble trying to find out how to implement this. Do you guys have any suggestions. Thanks.
Hi, I'm not sure where I have translated this incorrectly. I have one google map embedded on my page which works fine. But I wanted to add a second one. I thought the easiest way to do this would be to have a second page which is called later on with all the details on it for the second map. However although I think (this I presume is where I went wrong) I have replicated the instructions correctly the place holder for the second map just remains blank. This is the code for my called page with the instructions for the second map: PHP Code: <?php echo $_POST['Map'] . '<br />'; ?> <div id="placemap_canvas"></div> <meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> <style type="text/css"> html {height:250px} body {height:250px} #placemap_canvas {width:100%; height:150px;} </style> <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true" /> </script> <script type="text/javascript"> var latlng = new google.maps.LatLng ( <?php include("dbconnect.php"); $result = mysql_query("SELECT * FROM regions WHERE RegionPId='{$_POST['Map']}'"); while($row = mysql_fetch_array($result)){ echo $row['maplink']; } mysql_close($con); ?> ); var myOptions = { zoom: 4, center: latlng, mapTypeId: google.maps.MapTypeId.ROADMAP }; var map = new google.maps.Map(document.getElementById("placemap_canvas"), myOptions); } </script> And this is the script of the main page, just in case I would be better off keeping them both in one place. Code: <head>
<script type="text/javascript">
function loadSubPlace(File,ID,Msg,Eile,EID,Esg){
loadXMLDoc1(File,ID,Msg);
var mimer = setTimeout(function(){loadXMLDoc1(Eile,EID,Esg)},5000);
}
</script>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
html {height:250px}
body {height:250px}
#map_canvas {width:30%; height:250px;}
</style>
<script type="text/javascript"
src="http://maps.google.com/maps/api/js?sensor=true" />
</script>
<script type="text/javascript">
function initialize() {
var latlng = new google.maps.LatLng (
<?php
include("dbconnect.php");
$result = mysql_query("SELECT * FROM countries
WHERE Country='{$_SESSION['Country']}'");
while($row = mysql_fetch_array($result)){
echo $row['Map'];
}
mysql_close($con);
?>);
var myOptions = {
zoom: 4,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"),
myOptions);
}
</script>
</head>
<body onload="initialize()">
<div class="countryright" id="map_canvas">
include("dbconnect.php");
$snowball=explode(';',$_POST['syringa']);
$turnsol=$snowball[1];
$violet =$snowball[2];
$wakerobin=$snowball[3];
global $turnsol;
global $violet;
global $wakerobin;
echo '<center><b><big>' . $wakerobin. '</big></b></center><br /><br />';
$result=mysql_query("SELECT * FROM regions
WHERE country='{$turnsol}' AND region='{$violet}' AND place='{$wakerobin}' AND sub !=''
ORDER BY sub ASC");
while($row = mysql_fetch_array($result)){
$wheat="{$row['RegionPId']};{$turnsol};{$violet};{$wakerobin};{$row['sub']}";
$tigerlilly=$row['RegionPId'];
echo '<input type="button" class="button3" name="place" id="place" value="' . $row['sub'] . '" onclick="loadSubPlace(\'getPlace.php\',\'txtHintPlaceSub\',\'hepatica=' . urlencode($wheat) . '\',\'getPlaceMap.php\',\'placemapcanvas\',\'Map=' . urlencode($tigerlilly) . '\');" />';
}
echo '<input type="button" class="button3" name="addplace" id="addplace" value="Add Place" onclick="loadXMLDoc1(\'getAddPlaceSub.php\',\'txtHintPlaceSub\', encodeURI(\'addsubplace=' . $_POST['syringa'] . '\'));" />';
echo '<br /><br /><div id="txtHintPlaceSub"></div><br /><br />';
mysql_close($con);
?>
I've cut out the script that doesn't relate to this so I hope I haven't missed anything important. Hey all I'm quite a newbie at javascript and I'm trying to have links to google maps markers. I have a page with my embeded google maps on it and some markers. What I'm basically looking to do is have a web page with a menu down the side and when you click the menu items, the google maps markers would pop up on the map. For example, city attractions down a side menu and when you click say restaurants, the markers would pop up the location restaurants in a certain place, then you could click pubs and the restaurant markers would dissapear and the pub markers would appear. Can anyboy help me with this or even direct me to some code that would help. Thanks all. I am using jMapping(http://vigetlabs.github.com/jmapping/) for using jQuery with google maps. What I'm trying to do is add an event listener so that when you click on a marker it will call a function I made within the jMapping function. Does anyone have any clues? everything I've tried doesn't work.
Hey I'm quite new at javascript and am currently in the process of creating a site that embeds google maps using an xml document. What I'm trying to do is categories the markers on my map. I am trying to make it so there are check boxes at the bottom and when i check the boxes, i.e. theatres, the markers will appear for the theatres and disappear when unchecked. Using some example code i have modified, i have so far got the maps to pickup the markers from the xml with the check boxes but the markers are all just on the page and the check boxes dont do anything and I am stuck as to of why. here's my code: Code: <!DOCTYPE HTML>
<html>
<head>
<title>Google Maps</title>
<script src="mykey"></script>
</head>
<body style="margin:0px; padding:0px;" onload="initialize()">
<table border=1>
<tr>
<td>
<div id="map" style="width: 550px; height: 450px"></div>
</td>
<td valign="top" style="width:150px; text-decoration: underline; color: #4444ff;">
<div id="side_bar"></div>
</td>
</tr>
</table>
<form action="#">
Theatres: <input type="checkbox" id="theatrebox" onclick="boxclick(this,'theatre')" />
Golf Courses: <input type="checkbox" id="golfbox" onclick="boxclick(this,'golf')" />
Tourist Information: <input type="checkbox" id="infobox" onclick="boxclick(this,'info')" /><br />
</form>
<script type="text/javascript">
_uacct = "UA-162157-1";
urchinTracker();
</script>
</body>
<script type="text/javascript">
//<![CDATA[
if (GBrowserIsCompatible()) {
var side_bar_html = "";
var gmarkers = [];
var map = null;
function createMarker(point,name,html,category) {
var marker = new GMarker(point);
GEvent.addListener(marker, "click", function() {
marker.openInfoWindowHtml(html);
});
marker.mycategory = category;
marker.myname = name;
gmarkers.push(marker);
side_bar_html += '<a href="javascript<b></b>:myclick(' + (gmarkers.length-1) + ')">' + name + '<\/a><br>';
return marker;
}
function show(category) {
for (var i=0; i<gmarkers.length; i++) {
if (gmarkers[i].mycategory == category) {
gmarkers[i].setVisible(true);
}
}
document.getElementById(category+"box").checked = true;
}
ensures the checkbox is cleared ==
function hide(category) {
for (var i=0; i<gmarkers.length; i++) {
if (gmarkers[i].mycategory == category) {
gmarkers[i].setVisible(false);
}
}
document.getElementById(category+"box").checked = false;
that we just hid
infowindow.close();
}
function boxclick(box,category) {
if (box.checked) {
show(category);
} else {
hide(category);
}
makeSidebar();
}
function myclick(i) {
google.maps.event.trigger(gmarkers[i],"click");
}
var map = new GMap2(document.getElementById("map"));
map.addControl(new GLargeMapControl());
map.addControl(new GMapTypeControl());
map.setCenter(new GLatLng( 53.8363,-3.03771), 11);
GDownloadUrl("categories.xml", function(doc) {
var xmlDoc = GXml.parse(doc);
var markers = xmlDoc.documentElement.getElementsByTagName("marker");
for (var i = 0; i < markers.length; i++) {
// obtain the attribues of each marker
var lat = parseFloat(markers[i].getAttribute("lat"));
var lng = parseFloat(markers[i].getAttribute("lng"));
var point = new google.maps.LatLng(lat,lng);
var address = markers[i].getAttribute("address");
var name = markers[i].getAttribute("name");
var html = "<b>"+name+"<\/b><p>"+address;
var category = markers[i].getAttribute("category");
// create the marker
var marker = createMarker(point,name,html,category);
map.addOverlay(marker);
}
document.getElementById("side_bar").innerHTML = side_bar_html;
show("theatre");
hide("golf");
hide("info");
});
}
else {
alert("Sorry, the Google Maps API is not compatible with this browser");
}
</script>
</body>
</html>
If anybody help with this and tell me where I am going wrong, it would be much appreciated. thanks I'm completely at a loss how to embed a map with the new google maps api setup. I found a snippet of code that I dropped in with some small database variables pulled in and was done. Then an error came that the API was no good. So I went in and set up an anaccount, got an api and now I just simply have no clue what their instructions are saying I need to do. Gah! Here's what I originally had: I now have a Client ID, client secret and stuff. But no clue how to set up this url, etc. Code: </script>
<script src="//maps.google.com/maps?file=api&v=2&key=AIzaSyD4iE2xVSpkLLOXoyqT-RuPwURN3ddScAI"
type="text/javascript"></script>
<script type="text/javascript">
function initialize() {
if (GBrowserIsCompatible()) {
var map = new GMap2(document.getElementById("map_canvas"));
map.setCenter(new GLatLng(<?php echo $c_row['location_longitude']; ?>,<?php echo $c_row['location_latitude']; ?>), 13);
// Add the latitude/longitude marker to the map
var point = new GLatLng(<?php echo $c_row['location_longitude']; ?>,<?php echo $c_row['location_latitude']; ?>);
map.addOverlay(new GMarker(point));
map.setUIToDefault();
}
}
</script>
<b>Map:<br><br><div id="map_canvas" style="width: 500px; height: 300px; z-index:4000;border-width:medium;border-color:#030;"></div></b>
Hi I have just started looking at the Google maps, and have atutorial that will get the co-ordinates. What I want this to do, is then populate two fields on a form one called longitude and one called latitude Code: function usePointFromPostcode(postcode, callbackFunction) {
localSearch.setSearchCompleteCallback(null,
function() {
if (localSearch.results[0]) {
var resultLat = localSearch.results[0].lat;
var resultLng = localSearch.results[0].lng;
var point = new GLatLng(resultLat,resultLng);
callbackFunction(point);
}else{
alert("Postcode not found!");
}
});
localSearch.execute(postcode + ", UK");
}
Any ideas/tips would be be much appreciated I have some problems with intergrating google maps into my page I cant seem to get a marker to appear on my map. I have tried numerous methods but non seem to work. I have integrated the google maps on my main site, repositioned and re-sized. The code below is a test page i work on to get code to work. It's just a map on a page entire code: <!DOCTYPE HTML> <html> <head> <meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> <style type="text/css"> html { height: 100% } body { height: 100%; margin: 25px; padding: 25px } #map_canvas { height: 100% } </style> <script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?key=AIzaSyDrxZnpYBNIwzBFVYaDY__BMONEjNEGZaI&sensor=false"> </script> <script type="text/javascript"> function initialize() { var myLatlng = new google.maps.LatLng(-25.363882,131.044922); var myOptions = { zoom: 4, center: myLatlng, mapTypeId: google.maps.MapTypeId.ROADMAP } var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);} var marker = new google.maps.Marker({ position: myLatlng, map: map, title:"Hello World!" }); </script> </head> <body onload="initialize()"> <div id="map_canvas" style="width:100%; height:100%"></div> </body> </html> can anybody tell my where i am going wrong and just the map appears with no marker? thanks I need help making this script output a route on the map on top of the dollar amount it outputs right now. Here is a link to what im working on http://stallionshockey.org/testweb/ Any help would be greatly appreciated Thanks, Josh My google maps is showing a grey box and no map?! Please help me, I got my code from he http://www.powerhut.co.uk/googlemaps/custom_markers.php and uploaded everything to the right place but it's just grey?! http://79.170.40.235/affordableappli...uk/contact.php Hi, Not sure how difficult this will be but im working on a javascript/HTML5 game, and thought it would be interesting to allow for people to add their score to a google map at their location. I can get the google map and allow people to add their own markers but i dont no how i would store them, and then reload them when someone plays the game. any ideas? Thanks, Luke hello all, what i would like to implement is the following : http://mon.grnet.gr/network/maps/lite/?load&ip but, the problem is that, although the numerical data that show the traffic volume passing through a link are available to me, i do not have clue on how i can display them onto the map ... ? i would be thankful, if you could give me a piece of advice. Hello! I'm developing a small application with Google Maps API for use in Wordpress and didn't want to place all the javascript into the Worpress page template file. But whenever I place the javascript that works fine in page tempalte into separate javascript file in Wordpress, all of the code using Google Maps API except the code that runs Maps itself stops working. So the Maps runs but for example Geocoder does not. I'm simulatenously using Google's jQuery API. I hope someone has experience with this and can help me. Hey all, I was wondering if someone would be able to help me with a problem I've been having. I'm attempting to find coordinates for several addresses at a time. I'm using a for-loop to loop through an array of addresses. I figured it would be best to have a separate function to evaluate the coordinate given an address, and just call it in every loop. Note that my code below is simplified (I removed the for loop because that's not where I'm having trouble). I know that the issue is probably because I'm trying to return a value from an anonymous function... I tried making the variable global, I tried having a return line from within the anonymous function, nothing has worked... any tips? Thanks -- Code follows Code: function initialize(){
var geocoder = new google.maps.Geocoder(); // creating a new geocode object
var locCood = findcood('44106', geocoder);
}
function findcood(addr, geocoder)
{
var cood;
if (geocoder) {
geocoder.geocode({'address': addr}, function(results, status, cood){
if (status == google.maps.GeocoderStatus.OK)
cood = results[0].geometry.location;
else {
cood = null;
alert("Geocode was not successful for the following reason: " + status);
}
});
}
else
{
alert("No Geocode");
cood = null;
}
alert(cood);
return cood;
}
Hi, I'm making a javascript with google maps API. The concept is that you have to fill in your desired location and that it shows you the route to that location. It has an unchangeable starting location. I also made it so that you have a description panel. Now when I try to make it so that the description panel is next to the map with the route on, my description panel just drops below my map. I believe this problem is either me f*cking up my div's or my CSS. Here's what i used for my CSS <style type="text/css"> html, body { height: 100%; margin: 0; padding: 0; } #map_canvas { height: 100%; width: 70% } #directionsPanel { float:right; width:30%; height 100% } @media print { html, body { height: auto; } #map_canvas { height: 650px; } } </style> And here's what i used for my div's <div id="main" style="width:100%;height:100%"> <div id="map_canvas" style="top:30px;width:70%;height:80%"></div> <div id="warnings_panel" style="width:100%;height:10%;text-align:center"></div> <div id="directionsPanel" style="float:right;width:30%;height 100%"></div> </div> Any help regarding this would be much appreciated. (And yes, I'm still new to scriptwriting/coding in general) Hello, I'm just beginning to work with javascript and having a heck of a time with the syntax. I've worked with PC's for over 25 years, but my programming skills are weak and rusty. I have a jpg image(s) that I'm trying to get to "overlay" a Google base map and I know I'm so close, but can't figure it out. I've looked at plenty of sample code on Google's code pages, as well as others but I'm missing something. I can send the code if someone could please help. Thanks in advance! Hey everyone! I have been fiddling with this for a while now. I cant seem to make anything work. I have tried geocoding services, get position etc. I am sure it can be done so I was hoping someone here may have some experience with the newest API for google maps, V3. In my code below I just have a simple map with a marker.. not important. What I am trying to do is, when you drag the little man to switch the map into streetview, I need to display the current latitude and longitude in some input boxes. This needs to happen in streetview mode though which I have not been able to make happen. Anyone care to lend a few minutes? It must be possible! Code: <html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title></title>
<style>
#map_canvas {height: 500px; width:800px;}
</style>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
function initialize() {
var map = new google.maps.Map(document.getElementById("map_canvas"), {
mapTypeId: google.maps.MapTypeId.ROADMAP,
streetViewControl: true
});
var markers = [
{ lat: 49.202612, lng: -122.879612, name: 'McDonalds', marker: 'default' }];
// Create the markers
for (index in markers) addMarker(markers[index]);
function addMarker(data) {
var marker = new google.maps.Marker({
position: new google.maps.LatLng(data.lat, data.lng),
map: map,
title: data.name
});
}
var bounds = new google.maps.LatLngBounds();
for (index in markers) {
var data = markers[index];
bounds.extend(new google.maps.LatLng(data.lat, data.lng));
}
map.fitBounds(bounds);
}
</script>
</head>
<body onload="initialize()">
<div id="map_canvas"></div>
Streetview Latitude: <input type="text" name="latitude" value="?"><br>
Streetview Longitude: <input type="text" name="longitude" value="?">
</body>
</html>
I'm trying to make a map that will show your current location, but also load an xml file to show certain attractions in your area. I have the code to work for getting your current location, but I can't figure out how to implement loading the xml file and placing markers based off of that xml file. Here is the code for getting my location: Code: function show_position(p)
{
document.getElementById('current').innerHTML="latitude="+p.coords.latitude.toFixed(2)+" longitude="+p.coords.longitude.toFixed(2);
var pos=new google.maps.LatLng(p.coords.latitude,p.coords.longitude);
map.setCenter(pos);
map.setZoom(14);
var infowindow = new google.maps.InfoWindow({
content: "<strong>yes</strong>"
});
var marker = new google.maps.Marker({
position: pos,
map: map,
title:"You are here"
});
google.maps.event.addListener(marker, 'click', function() {
infowindow.open(map,marker);
});
}
</script >
Can anybody help me figure this out? Thank you in advance We got a google maps with a bunch of pins. Each pin is setup to use our blue custom icon image. I'm trying to make it so that when you click on a pin, that particular pin changes to a green version of the icon, and all the reset stay blue. If the user clicks another pin, it turns green and the previous goes back to blue. Basicly only the clicked active pin should be green. Code: google.maps.event.addListener(markers[indx], 'click', function() {
this.setIcon("/images/greenmarker.png");
});
Here is my code so far that will change the clicked pin into a green version. My problem is all attempts to change all pins back to blue prior to changing this clicked pin to green fails bad. Anyone know how to do this or point me in the right direction? |
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