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milkbread/GET_test.html

Created September 4, 2013 19:42
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JavaScript: GeoJSONSimplifier_0.1
Raw
data.js
var LineString = {
"type": "LineString",
"coordinates": [
[-101.744384765625, 39.32155002466662],
[-101.5521240234375, 39.330048552942415],
[-101.40380859375, 39.330048552942415],
[-101.33239746093749, 39.364032338047984],
[-101.041259765625, 39.36827914916011],
[-100.975341796875, 39.30454987014581],
[-100.9149169921875, 39.24501680713314],
[-100.843505859375, 39.16414104768742],
[-100.8050537109375, 39.104488809440475],
[-100.491943359375, 39.10022600175347],
[-100.43701171875, 39.095962936305476],
[-100.338134765625, 39.095962936305476],
[-100.1953125, 39.027718840211605],
[-100.008544921875, 39.01064750994083],
[-99.86572265625, 39.00211029922512],
[-99.6844482421875, 38.97222194853654],
[-99.51416015625, 38.929502416386605],
[-99.38232421875, 38.92095542046727],
[-99.3218994140625, 38.89530825492018],
[-99.1131591796875, 38.86965182408357],
[-99.0802001953125, 38.85682013474361],
[-98.82202148437499, 38.85682013474361],
[-98.44848632812499, 38.84826438869913],
[-98.20678710937499, 38.84826438869913],
[-98.02001953125, 38.8782049970615],
[-97.635498046875, 38.87392853923629]
]
};
Raw
GET_test.html
<!DOCTYPE html>
<html>
<head>
<script src="http://d3js.org/d3.v3.min.js"></script>
</head>
<body>
</body>
<script>
//!!!Cross-origin not allowed!!!
/*You have to build a test-environment ... needs a local version of WebGen-WPS (http://kartographie.geo.tu-dresden.de/webgen_docs/index.php?option=com_content&view=article&id=52&Itemid=82&lang=de)
1. Start Tomcat
- start Eclipse: Workspace = /home/klammer/Software/WebGen-WPS/wps-eclipse-workspace
- start Tomcat
(- login on server with browser: username="tomcat" password="s3cret")
2. Throw this file on local 'server'
- goto: /usr/local/tomcat/webapps
- goto OR make: /html_stuff
- make sure there is a simple 'index.html' inside, containing a link on this file
- copy this file into '/usr/local/tomcat/webapps/html_stuff'
3. Start it
- along the tomcat manager:
- http://localhost:8080/
- /html_stuff
- click the link
- directly:
- http://localhost:8080/html_stuff/GET_test.html
*/
//Help: http://bl.ocks.org/mbostock/3750941
var url = 'http://localhost:8080/wps-origin/wps?service=WPS&Request=GetCapabilities&AcceptVersions=1.0.0&language=en-GB';
//url = 'http://localhost:8080/wps-origin/wps?service=WPS&Request=DescribeProcess&version=1.0.0&language=en-GB&Identifier=ch.unizh.geo.webgen.service.LineSmoothing';
//url = "https://api.github.com/repos/mbostock/d3/git/blobs/2e0e3b6305fa10c1a89d1dfd6478b1fe7bc19c1e?" + Math.random();
d3.json(url)
.on("progress", function() {
console.log('hey')
})
.get(function(error, data) {
console.log(data)
});
</script>
</html>
Raw
index.html
<!DOCTYPE html>
<html>
<head>
<link type="text/css" rel="stylesheet" href="stylesheet.css"/>
<link type="text/css" rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.6.1/leaflet.css"/>
<title>Result</title>
<script src="http://cdn.leafletjs.com/leaflet-0.6.1/leaflet.js"></script>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script src="http://mourner.github.io/simplify-js/simplify.js"></script>
<script src="http://bl.ocks.org/milkbread/raw/5909613/simplify_RK_1.1.js"></script>
<script src="route.js"></script>
</head>
<body>
<div class='block'>
<textarea id="geojson-input" placeholder="Paste GeoJSON here"></textarea>
</div>
<div class='block'>
<div id="map"></div>
</div>
<div class='block'>
<textarea id="geojson-output" placeholder="Resulting GeoJSON will be displayed here"></textarea>
</div>
<div class='footer'>
<div>
<p class='block' id='head'>Simplify your GeoJSON-Linestring, with:</p>
<div class='block2'>
<input id='d_p' type="radio" name="algo" value="d_p" checked><a href='http://mourner.github.io/simplify-js/' target='blank_'>Douglas-Peucker</a><br>
</div>
<div class='block2'>
<input id='vis' type="radio" name="algo" value="vis"><a href='http://bost.ocks.org/mike/simplify/' target='blank_'>Visvalingam</a><br>
</div>
</div>
<p class='block'>Tolerance:</p>
<input class='block' id='tol' name='text' onChange='enter(value)' size='10px'></input>
<p class='block' id='go'>Go</p>
<p class='block' id='convert'>LatLng/LngLat</p>
</div>
</body>
<script>
//Help: http://bl.ocks.org/mbostock/3750941
/*var url = 'http://kartographie.geo.tu-dresden.de/webgen_wps/wps?service=WPS&Request=DescribeProcess&Service=WPS&Version=1.0.0&Identifier=ch.unizh.geo.webgen.service.LineSmoothing'
d3.json("https://api.github.com/repos/mbostock/d3/git/blobs/2e0e3b6305fa10c1a89d1dfd6478b1fe7bc19c1e?" + Math.random())
.on("progress", function() {
console.log('hey')
})
.get(function(error, data) {
console.log(data)
});
*/
//initialise map
var map = L.map('map').setView([52.67, 21.97], 4);
var stamen = L.tileLayer('http://{s}.tile.stamen.com/toner/{z}/{x}/{y}.png', {attribution: 'Add some attributes here!'}).addTo(map);
var baseLayers = {"stamen": stamen};
//initialise input of textarea
//var cache = LineString;
//cache.coordinates = LineString.coordinates.map(function(d){return [d[1],d[0]]});
d3.select('#geojson-input').text(JSON.stringify(LineString, null, 4));
//initialize textarea-input AND polyline
var input = $('#geojson-input').val();
var polyline = new L.polyline(JSON.parse(input).coordinates, {color: '#41b611'}).addTo(map);
//addpolyline to and add layer control
var overlays = {"line": polyline};
var control = L.control.layers(baseLayers, overlays).addTo(map);
//Simplify for 1st time
var tol = d3.select('#tol').attr('value',0.05)
var tolerance = tol.attr('value');
process(tol.attr('value'));
//initialize visvalingam_simplification
var d3Simplify = d3.simplify();
d3Simplify.projection(function (point){return point});
map.fitBounds(polyline.getBounds());
d3.select('#go').on('mouseover',function(){d3.select('#go').style('background-color','#999');})
.on('mouseout',function(){d3.select('#go').style('background-color','#ddd');})
.on('mousedown',function(){d3.select('#go').style('background-color','#000');})
.on('mouseup',function(){d3.select('#go').style('background-color','#999'); process();})
d3.select('#convert').on('mousedown',function(){d3.select('#convert').style('background-color','#000');})
.on('mouseup',function(){d3.select('#convert').style('background-color','#999'); convert();})
function enter(d){
tolerance=d;
process();
}
function convert(){
var input_ = $('#geojson-input').val();
var line_ = JSON.parse(input_);
line_.coordinates = line_.coordinates.map(function (d){return [d[1],d[0]]})
d3.select('#geojson-input').text(JSON.stringify(line_, null, 4));
polyline.setLatLngs(line_.coordinates);
map.fitBounds(polyline.getBounds());
//!!!PROBLEM: Loads too slowly!!!
}
function process(){
var algorithm;
if (d3.select('#d_p')[0][0].checked == true)algorithm='d_p';
else if (d3.select('#vis')[0][0].checked == true)algorithm='vis';
else return;
//console.log(d);
input = $('#geojson-input').val();
var line = JSON.parse(input);
//console.log(algorithm);
switch(algorithm){
case 'd_p':
line.coordinates = simplify_geom(line, tolerance);
break;
case 'vis':
line.coordinates=line.coordinates.map(function(p){return [p[1],p[0]]})
d3Simplify( {'type':'LineString', 'coordinates':line.coordinates})
line.coordinates=line.coordinates.filter(function(point,i){return point[2]>tolerance || i==0 || i==line.coordinates.length-1;});
break;
default:
//line.coordinates = simplify_geom(line, d);
}
//line.coordinates = simplify_geom(line, d);
polyline.setLatLngs(line.coordinates);
d3.select('#geojson-output').text(JSON.stringify(polyline.toGeoJSON().geometry, null, 4));
}
function simplify_geom(line_, tolerance){
var allPointObjects = pointsConversion(line_.coordinates, 'toObject')
allPointObjects = simplify(allPointObjects,tolerance,true);
return pointsConversion(allPointObjects, 'toArray');
}
function pointsConversion(points, direction){
var cache;
if(direction=='toObject'){
cache = points.map(function(point){return {'y':point[1],'x':point[0]}});
}
else if(direction=='toArray'){
cache = points.map(function(point){return [point.y,point.x]});
}
return cache;
}
</script>
</html>
Raw
route.js
var LineString = {
"type": "LineString",
"coordinates": [
[
2.32986,
48.86005
],
[
2.35093,
48.863411
],
[
2.43115,
48.940418
],
[
2.54246,
48.960732
],
[
2.63999,
49.001961
],
[
2.72844,
49.08049
],
[
2.73925,
49.098728
],
[
2.77004,
49.111778
],
[
2.80339,
49.144669
],
[
2.85119,
49.15979
],
[
2.99549,
49.23616
],
[
3.03301,
49.241539
],
[
3.08543,
49.26516
],
[
3.13198,
49.266472
],
[
3.18086,
49.294731
],
[
3.21429,
49.302959
],
[
3.28301,
49.356419
],
[
3.3289,
49.35873
],
[
3.35653,
49.368698
],
[
3.37508,
49.387329
],
[
3.3684,
49.40694
],
[
3.40955,
49.42358
],
[
3.43405,
49.446411
],
[
3.51661,
49.463291
],
[
3.58582,
49.519058
],
[
3.59405,
49.535789
],
[
3.62701,
49.551029
],
[
3.63567,
49.573921
],
[
3.65985,
49.59404
],
[
3.71867,
49.705761
],
[
3.80852,
49.78054
],
[
3.9306,
49.8503
],
[
4.00552,
49.867611
],
[
4.02625,
49.889511
],
[
4.06293,
49.90406
],
[
4.09659,
49.905418
],
[
4.10586,
49.934929
],
[
4.14826,
49.948738
],
[
4.16724,
49.974251
],
[
4.20531,
49.97723
],
[
4.31856,
50.0275
],
[
4.37885,
50.030609
],
[
4.46792,
50.070969
],
[
4.46888,
50.083069
],
[
4.49986,
50.102741
],
[
4.49368,
50.127609
],
[
4.50478,
50.152081
],
[
4.52658,
50.17326
],
[
4.53016,
50.19585
],
[
4.55226,
50.203079
],
[
4.57809,
50.246059
],
[
4.60485,
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],
[
4.65955,
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],
[
4.71331,
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],
[
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],
[
4.74492,
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[
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[
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[
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],
[
4.86628,
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],
[
4.85599,
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],
[
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],
[
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],
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],
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],
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],
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],
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],
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],
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