I have written a Google Fusion Tables script I'm happy with (below), but it's loading only 500 rows of points in my table, which has over 20,000 rows. This is my first time in this neighborhood and I was really surprised to find the limit. Is there some way to load all the rows?
<!doctype html>
<html class="no-js" lang="en">
<head>
<meta charset="utf-8">
<meta content="IE=edge,chrome=1" http-equiv="X-UA-Compatible">
<title>Points in box</title>
<link href="./stylesheets/example.css" media="screen" rel="stylesheet" type="text/css" />
<link rel="shortcut icon" href="/images/favicon.ico" />
<noscript><meta http-equiv="refresh" content="0;url=/no_javascript.html"></noscript>
<!-- Find box coordinates javascript -->
<script type ="text/javascript" src="http://www.movable-type.co.uk/scripts/latlon.js"></script>
<!-- Type label text javascript -->
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript" src="./js/label.js"></script>
<!-- Visulization javascript -->
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<!-- Initialize visualization -->
<script type="text/javascript">
google.load('visualization', '1', {});
</script>
</head>
<body class="developers examples examples_downloads examples_downloads_points-in-box examples_downloads_points-in-box_index">
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
var store_table = 4121905;
//send a call to GViz to retrieve lat/long coordinates of the stores
function getStoreData() {
//set the query using the input from the user
var queryText = encodeURIComponent("SELECT Latitude,Longitude,Impressions FROM " + store_table);
var query = new google.visualization.Query('http://www.google.com/fusiontables/gvizdata?tq=' + queryText);
//set the callback function
query.send(doLoop);
}
function drawBox(topleftx, toplefty, bottomrightx, bottomrighty) {
var bounds = new google.maps.LatLngBounds(
new google.maps.LatLng( topleftx, toplefty ),
new google.maps.LatLng( bottomrightx, bottomrighty )
);
var overlay = new google.maps.Rectangle({
map: carto_map,
bounds: bounds,
strokeColor: "#0000ff",
strokeOpacity: 0.20,
strokeWeight: 2,
fillColor: "#0000ff",
fillOpacity: 0.050,
});
}
function doLoop(response) {
numRows = response.getDataTable().getNumberOfRows();
//Basic
var cartodbMapOptions = {
zoom: 7,
center: new google.maps.LatLng( 37.926868, -121.68457 ),
// center: new google.maps.LatLng( 40.7248057566452, -74.003 ),
// disableDefaultUI: true,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
// Init the map
carto_map = new google.maps.Map(document.getElementById("map"),cartodbMapOptions);
for(i = 0; i < numRows; i++) {
var centerX = response.getDataTable().getValue(i,0);
var centerY = response.getDataTable().getValue(i,1);
var imps = response.getDataTable().getValue(i,2);
var centerPoint = new LatLon(centerX,centerY);
var latLng = new google.maps.LatLng(centerX,centerY);
var toplefty = centerPoint.destinationPoint(-45, 6)._lon;
var topleftx = centerPoint.destinationPoint(-45, 7.7)._lat;
var bottomrighty = centerPoint.destinationPoint(135, 6)._lon;
var bottomrightx = centerPoint.destinationPoint(135, 7.7)._lat;
drawBox(topleftx, toplefty, bottomrightx, bottomrighty);
var marker = new google.maps.Marker({
position: latLng,
draggable: false,
markertext: imps,
flat: true,
map: carto_map
});
var label = new Label({
map: carto_map,
position: latLng,
draggable: true
});
label.bindTo('text', marker, 'markertext');
marker.setMap(null);
}
}
$(function() {
getStoreData();
});
</script>
<div id="map"></div>
</body>
</html>
I solved the problem by using the json call method. Code below.
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>David's Build Up</title>
<link href="./stylesheets/example.css" media="screen" rel="stylesheet" type="text/css" />
<link rel="shortcut icon" href="/images/favicon.ico" />
<noscript><meta http-equiv="refresh" content="0;url=/no_javascript.html"></noscript>
<!-- Find box coordinates javascript -->
<script
src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js">
</script>
<script type ="text/javascript" src="http://www.movable-type.co.uk/scripts/latlon.js"></script>
<!-- Type label text javascript -->
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript" src="./js/label.js"></script>
<!-- Visulization javascript -->
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<!-- Initialize visualization -->
<script type="text/javascript">
google.load('visualization', '1', {});
</script>
<script type="text/javascript">
function drawBox(topleftx, toplefty, bottomrightx, bottomrighty) {
var bounds = new google.maps.LatLngBounds(
new google.maps.LatLng( topleftx, toplefty ),
new google.maps.LatLng( bottomrightx, bottomrighty )
);
var overlay = new google.maps.Rectangle({
map: carto_map,
bounds: bounds,
strokeColor: "#0000ff",
strokeOpacity: 0.20,
strokeWeight: 2,
fillColor: "#0000ff",
fillOpacity: 0.050,
});
}
function initialize() {
// Set the map parameters
var cartodbMapOptions = {
zoom: 5 ,
center: new google.maps.LatLng( 40.313043, -97.822266 ),
mapTypeId: google.maps.MapTypeId.ROADMAP
}
// Initialize the map
carto_map = new google.maps.Map(document.getElementById("map"),cartodbMapOptions);
// Query to grab the data
var query = "SELECT Latitude, Longitude, Impressions FROM " +
'[encrypted table ID here]';
var encodedQuery = encodeURIComponent(query);
// Construct the URL to grab the data
var url = ['https://www.googleapis.com/fusiontables/v1/query'];
url.push('?sql=' + encodedQuery);
url.push('&key=AIzaSyAm9yWCV7JPCTHCJut8whOjARd7pwROFDQ');
url.push('&callback=?');
// Set the number of rows
var numRows = 3500;
// Get the variables from the table, in a loop
$.ajax({
url: url.join(''),
dataType: 'jsonp',
success: function (data) {
var rows = data['rows'];
var ftData = document.getElementById('ft-data');
for (var i in rows) {
var centerX = rows[i][0];
var centerY = rows[i][1];
var imps = rows[i][2];
// Set the center points
var centerPoint = new LatLon(centerX,centerY);
var latLng = new google.maps.LatLng(centerX,centerY);
// Set top left points
var toplefty = centerPoint.destinationPoint(-45, 6)._lon;
var topleftx = centerPoint.destinationPoint(-45, 7.7)._lat;
// Set bottom right points
var bottomrighty = centerPoint.destinationPoint(135, 6)._lon;
var bottomrightx = centerPoint.destinationPoint(135, 7.7)._lat;
// Draw the box
drawBox(topleftx, toplefty, bottomrightx, bottomrighty);
// Drop markers
var marker = new google.maps.Marker({
position: latLng,
draggable: false,
markertext: imps,
flat: true,
map: carto_map
});
var label = new Label({
map: carto_map,
position: latLng,
draggable: true
});
label.bindTo('text', marker, 'markertext');
marker.setMap(null);
};
}
});
}
</script>
</head>
<body onload="initialize()">
<div id="map"></div>
<div id="ft-data"></div>
</body>
</html>
The Gviz API does have a 500 row limit for a given query.
Any table is limited to 100,000 mappable rows, but that's well outside your reported 20,000 rows.
The new Javascript API, currently accepting Trusted Testers, offers JSON format support for any number of rows returned for a query. You can apply for the TT program by requesting membership in this group:
https://groups.google.com/group/fusion-tables-api-trusted-testers
-Rebecca
The fusiontables/gvizdata URL is intended for Gviz charts and so is limited to 500 points. There are other ways to query that don't have that limitation. See https://developers.google.com/fusiontables/docs/sample_code for examples.
I routinely refresh a 2500 row table by deleting all rows and inserting new ones. The loop in my code that constructs the INSERT sql has a nested loop that just counts to 400, sends that sql, and then starts building another one with the next 400 records.
Related
I want to get all features when I click on heat map in openlayers 3...It is possible or not? How to count the features in heat map and give heat map total count features label? thanks
Openlayers3 can do this easily,You can use getFeatures() to get all the features.
var features = heatlayer.getSource().getFeatures()
alert('count: '+features.length);
This method returns an array containing all the features,so you can use length to count.
<!DOCTYPE html>
<html>
<head>
<title>heatlayer count example</title>
<link rel="stylesheet" href="https://openlayers.org/en/v3.20.1/css/ol.css" type="text/css">
<!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
<script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
<script src="https://openlayers.org/en/v3.20.1/build/ol.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.2.61/jspdf.min.js"></script>
<style>
.map {
max-width: 566px;
}
</style>
</head>
<body>
<div id="map" class="map"></div>
<script>
var raster = new ol.layer.Tile({
source: new ol.source.OSM()
});
var heatlayer = new ol.layer.Heatmap({
source: new ol.source.Vector(),
blur: parseInt(14),
radius: parseInt(8)
});
var adddata = [[104.807799,30.232233],[106.803599,31.233225]];
//addfeature
for(var i = 0;i < adddata.length ; i++){
var feature = new ol.Feature({
geometry:new ol.geom.Point([adddata[i][0],adddata[i][1]])
});
heatlayer.getSource().addFeature(feature);
}
var map = new ol.Map({
layers: [raster,heatlayer],
target: 'map',
controls: ol.control.defaults({
attributionOptions: /** #type {olx.control.AttributionOptions} */ ({
collapsible: false
})
}),
view: new ol.View({
projection: 'EPSG:4326',
center:[104.07, 30.7],
zoom: 2
})
});
map.on('click', function(event){
var features = heatlayer.getSource().getFeatures()
alert('count: '+features.length);
});
</script>
</body>
</html>
I've been working on this for a couple so getting to this point should make me very happy. However, I cannot figure out my infowindow output is adding "\n" to every new line. No idea how it's getting there. The geolocation is also being appended to the search result infowindow. I'd like to remove that as well.
Here is a link to the map: http://58design.com/gmaps/
Here is my code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Sheriff | Zone Leader Look Up</title>
<meta name="author" content="Santa Clarita Valley Sheriff" />
<meta name="copyright" content="Copyright 2013 SCV Sheriff" />
<meta name="keywords" content="Santa Clarita Valley Sheriff, SCV Sheriff, Canyon Country, Valencia, Saugus, Newhall, Castaic, Gorman, Stevenson Ranch, " />
<meta name="description" content="Santa Clarita Valley Sheriff Zone Leader Contact Inforamtion Look Up." />
<meta name="robots" content="index,follow" />
<meta name="Googlebot" content="follow" />
<meta name="googlebot" content="archive" />
<meta name="distribution" content="global" />
<!--Load the AJAX API-->
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
//<![CDATA[
google.load('visualization', '1', {'packages':['corechart', 'table', 'geomap']});
//var FusionTableID = 1931355;
var FusionTableID = '1uSGM1yPMJBlu74Znm4fPqdCsJjteB_kQ_nGz3tk';
var map = null;
var geocoder = null;
var infowindow = null;
var marker = null;
function initialize() {
geocoder = new google.maps.Geocoder();
infowindow = new google.maps.InfoWindow({size: new google.maps.Size(150,50) });
// create the map
var myOptions = {
zoom: 10,
center: new google.maps.LatLng(34.452789398370045, -118.51948001245114),
mapTypeControl: true,
mapTypeControlOptions: {style: google.maps.MapTypeControlStyle.DROPDOWN_MENU},
navigationControl: true,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
map = new google.maps.Map(document.getElementById("map_canvas"),
myOptions);
//layer = new google.maps.FusionTablesLayer(FusionTableID,{suppressInfoWindows:true});
layer = new google.maps.FusionTablesLayer({
map: map,
suppressInfoWindows: true,
heatmap: { enabled: false },
query: {
select: "col2",
from: "1uSGM1yPMJBlu74Znm4fPqdCsJjteB_kQ_nGz3tk",
where: "",
},
options: {
styleId: 2,
templateId: 2
}
});
layer.setMap(map);
google.maps.event.addListener(layer, "click", function(e) {
var content = e.row['description'].value+"<br><br>";
infowindow.setContent(content);
infowindow.setPosition(e.latLng);
infowindow.open(map);
});
}
function showAddress(address) {
var contentString = address+"<br>Outside Area";
geocoder.geocode( { 'address': address}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
var point = results[0].geometry.location;
contentString += "<br>"+point;
map.setCenter(point);
if (marker && marker.setMap) marker.setMap(null);
marker = new google.maps.Marker({
map: map,
position: point
});
// query FT for data
var queryText ="SELECT 'description', 'Zone Area' FROM "+FusionTableID+" WHERE ST_INTERSECTS(\'Zone Area\', CIRCLE(LATLNG(" + point.toUrlValue(6) + "),0.5));";
// document.getElementById('FTQuery').innerHTML = queryText;
queryText = encodeURIComponent(queryText);
var query = new google.visualization.Query('http://www.google.com/fusiontables/gvizdata?tq=' + queryText);
//set the callback function
query.send(openInfoWindowOnMarker);
} else {
alert("Geocode was not successful for the following reason: " + status);
}
});
}
function openInfoWindowOnMarker(response) {
if (!response) {
alert('no response');
return;
}
if (response.isError()) {
alert('Error in query: ' + response.getMessage() + ' ' + response.getDetailedMessage());
return;
}
FTresponse = response;
//for more information on the response object, see the documentation
//http://code.google.com/apis/visualization/documentation/reference.html#QueryResponse
numRows = response.getDataTable().getNumberOfRows();
numCols = response.getDataTable().getNumberOfColumns();
var content = "<b>Outside area</b><br><br>";
var unionBounds = null;
// alert(numRows);
for (var i=0; i < numRows; i++) {
var name = FTresponse.getDataTable().getValue(i,0);
var kml = FTresponse.getDataTable().getValue(i,1);
content = response.getDataTable().getValue(i,0)+"<br><br>";
}
infowindow.setContent(content+marker.getPosition().toUrlValue(6));
// zoom to the bounds
// map.fitBounds(unionBounds);
google.maps.event.addListener(marker, 'click', function() {
infowindow.open(map,marker);
});
google.maps.event.trigger(marker, 'click');
}
</script>
</head>
<body onload="initialize()">
<div id="content">
<h1>SCV Sheriff Reporting Zones</h1>
<p>Use the map below to determine your area's Zone Leader. Enter your street address, city and zip code in the search field below to view the Zone Leader's contact info.</p>
<form action="#" onsubmit="showAddress(this.address.value); return false" style="padding:10px 0px 30px 0px; background:none;">
<label>Address Search</label>
<input type="text" size="60" name="address" value="23920 Valencia Blvd. Santa Clarita, CA 91355" class="address" />
<input type="submit" value="Search" />
</p>
<div id="map_canvas" style="width: 516px; height: 387px; margin-bottom:30px; border:1px solid #999;"></div>
</form>
</div>
<div id="sidebar">
</div>
<div class="clear"><!--clear--></div>
</div>
</body>
</html>
The problem is in the data in your FusionTable (the line feeds are getting translated into "\n"). I fixed the entry for "Gorman" in my example (by removing the extraneous line feeds).
This line of my code is appending the geolocation to the search result infowindow:
infowindow.setContent(content+marker.getPosition().toUrlValue(6));
I'm working on an windows 8 app in html5 and now I'm stuck with the map that is going to find the users location I don't know whats wrong, it says it some error I hope someone can help me because I have more to work on and i have a deadline on this project
map.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>BingMapsJSIntro</title>
<script src="http://dev.virtualearth.net/mapcontrol/mapcontrol.ashx?v=7.0" type="text/javascript"></script>
<!-- WinJS references -->
<link href="//Microsoft.WinJS.1.0/css/ui-dark.css" rel="stylesheet" />
<script src="//Microsoft.WinJS.1.0/js/base.js"></script>
<script src="//Microsoft.WinJS.1.0/js/ui.js"></script>
<!-- BingMapsJSIntro references -->
<link href="/css/default.css" rel="stylesheet" />
<script src="/js/default.js"></script>
<!-- Bing Maps references -->
<script type="text/javascript"
src="ms-appx:///Bing.Maps.JavaScript//js/veapicore.js"></script>
<!-- Our Bing Maps JavaScript Code -->
<script src="/js/bing.js"></script>
</head>
<body>
<div id="myMap"></div>
</body>
</html>
bing.js
var map;
function showMap(position) {
var latitude = position.coords.latitude;
var longitude = position.coords.longitude;
var map = new Microsoft.Maps.Map($("mymap")[0],
{
credentials: "MYBINGMAPCODE",
center: new Microsoft.Maps.Location(latitude, longitude),
mapTypeId: Microsoft.Maps.MapTypeId.road,
zoom: 10
});
var center = map.getCenter();
var pin = new Microsoft.Maps.Pushpin(center, { width: 50, height: 50, draggable: false });
map.entities.push(pin);
}
//Initialization logic for loading the map control
(function () {
function initialize() {
Microsoft.Maps.loadModule('Microsoft.Maps.Map', { callback: GetMap });
}
document.addEventListener("DOMContentLoaded", initialize, false);
})();
Your modules callback method "GetMap" is non-existant in the code you provided.
Microsoft.Maps.loadModule('Microsoft.Maps.Map', { callback: GetMap });
You need something like...
function GetMap ()
{
var mapOptions = { credentials:"<Insert Your Bing Maps Key Here>" }
var map = new Microsoft.Maps.Map(document.getElementById("myMap"), mapOptions );
}
I have created a Google Fusion Map with 2 layers. All appears to be working correctly with 1 exception.
I have formatted the Info Window of both layers using the Google Fusion Table tool. However, the Info Window on layer 1 is not appearing as specified with the code below. It works fine in the Google Fusion Table tool itself.
Can anyone spot what I've done wrong? Thanks.
<meta charset="UTF-8">
<title>Smithfield Foods UK</title>
<link rel="stylesheet" type="text/css" media="all" href="FusionMapTemplate.css" />
<script type="text/javascript"
src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
function initialize() {
var defaultZoom = 10;
var defaultCenter = new google.maps.LatLng(52.6500, 1.2800)
var locationColumn = 'geometry'
var map = new google.maps.Map(document.getElementById('map-canvas'), {
center: defaultCenter,
zoom: defaultZoom,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var infoWindow = new google.maps.InfoWindow();
// Initialize the first layer
var FirstLayer = new google.maps.FusionTablesLayer({
query: {
select: 'geometry',
from: '1hpGzmMBg8bDgPOGrAXvc0_QVLSBqQ0O5vpLbfUE'
},
map: map,
styleId: 3,
templateID: 5,
suppressInfoWindows: true
});
google.maps.event.addListener(FirstLayer, 'click', function(e) {windowControl(e, infoWindow, map);
});
// Initialize the second layer
var SecondLayer = new google.maps.FusionTablesLayer({
query: {
select: 'PostCode',
from: '1RrCcRC-1vU0bfHQJTQWqToR-vllSsz9iKnI5WEk'
},
map: map,
styleId: 2,
templateId: 2,
suppressInfoWindows: true
});
google.maps.event.addListener(SecondLayer, 'click', function(e) {windowControl(e, infoWindow, map);
});
}
// Open the info window at the clicked location
function windowControl(e, infoWindow, map) {
infoWindow.setOptions({
content: e.infoWindowHtml,
position: e.latLng,
pixelOffset: e.pixelOffset
});
infoWindow.open(map);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="map-canvas"></div>
</body>
the issue:
templateID: 5,
//-------^
the D has to be lowercase
I'm trying to add a legend t a map i created from Google Fusion Table Layer Builder and nothing seem to be happening. The legend does not show. here's the sample code. Sample Code
<!DOCTYPE html>
<html>
<head>
<style>
#map-canvas { width:500px; height:400px; }
</style>
<script type="text/javascript"
src="http://maps.google.com/maps/api/js?sensor=false">
</script>
<script type="text/javascript">
var map;
var layerl0;
function initialize() {
map = new google.maps.Map(document.getElementById('map-canvas'), {
center: new google.maps.LatLng(0.428462803418747, 37.760009765625),
zoom: 6,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
layerl0 = new google.maps.FusionTablesLayer({
query: {
select: "'geometry'",
from: 3435376
},
map: map
});
// Create the legend and display on the map
var legend = document.createElement('div');
legend.id = 'legend';
var content = [];
content.push('<h3>Legend</h3>');
content.push('<p><div class="color red"></div>No</p>');
content.push('<p><div class="color green"></div>Yes</p>');
content.push('<p>*Data is fictional</p>');
legend.innerHTML = content.join('');
legend.index = 1;
map.controls[google.maps.ControlPosition.RIGHT_BOTTOM].push(legend);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="map-canvas"></div>
</body>
</html>
Your legend does show, well at the least the text. You'll need to add some CSS styles, e..g to set the background white, etc. There is a good example at
http://gmaps-samples.googlecode.com/svn/trunk/fusiontables/legend_template.html
See the Legend() and updateLegend() functions.
UPDATE This is really a CSS question. My changes are marked by ADDED or CHANGED
var legend = document.createElement('div');
legend.id = 'legend';
// ADDED
legend.style.padding = '10px';
legend.style.backgroundColor = 'white';
legend.style.borderStyle = 'solid';
legend.style.borderWidth = '1px';
legend.style.textAlign = 'left';
var content = [];
content.push('<h3>Legend</h3>');
// CHANGED
//content.push('<p><div class="color red"></div>No</p>');
//content.push('<p><div class="color green"></div>Yes</p>');
content.push('<p style="background-color: #51D950;">No</p>');
content.push('<p style="background-color: #C84939;">Yes</p>');
content.push('<p>*Data is fictional</p>');
legend.innerHTML = content.join('');
legend.index = 1;
map.controls[google.maps.ControlPosition.RIGHT_BOTTOM].push(legend);
The legend tag is ONLY allowed within fieldset tags.
http://www.w3schools.com/html5/tag_legend.asp