-
Notifications
You must be signed in to change notification settings - Fork 23
/
dcopendata_income_choropleth_arcgis.html
331 lines (293 loc) · 11.7 KB
/
dcopendata_income_choropleth_arcgis.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
<!DOCTYPE html>
<html>
<head>
<!-- Description: This sample demonstrates how to create a colorful interactive choropleth map of census tracts using data from DC Open Data with the help of Esri ArcGIS JS API -->
<!-- Attribution:
Esri ArcGIS JS API Samples, Url: https://developers.arcgis.com/javascript/3/jssamples/fl_hover.html
Styling inspired by Esri Story Map: https://storymaps.esri.com/stories/2016/top-stories/
-->
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
<title>Census Tracts by Median Income - 2010 @ Washington, DC</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.27/dijit/themes/tundra/tundra.css">
<link rel="stylesheet" href="https://js.arcgis.com/3.27/esri/css/esri.css">
<link rel="shortcut icon" type="image/x-icon" href="https://dc.gov/sites/default/files/favicon_0.ico">
<style>
body {
margin: 0;
padding: 0;
font-family: "open_sanssemi", sans-serif;
}
#map {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
a {
color: #fff;
font-family: 'open_sansregular', sans-serif;
}
.esriSimpleSliderTL {
top: 100px;
}
#info {
position: absolute;
left: 0;
bottom: 0;
padding: 10px;
background-color: rgba(73, 73, 73, 0.8);
font-size: 14px;
font-family: "open_sanssemibold", sans-serif;
width: 200px;
text-align: center;
border-radius: 0 10px 0 0;
color: white;
}
</style>
<style>
/*styling for title bar and about pop over */
#title {
color: #fff;
font-family: "open_sanssemibold", sans-serif;
padding: 3 0 0 4;
font-size: 24px;
line-height: 30px;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
.header {
position: relative;
padding: 15px 30px 25px 30px;
margin: auto;
z-index: 500;
background-color: rgb(12, 12, 12);
box-shadow: 0 3px 5px 0 rgba(0, 0, 0, .75);
opacity: 0.8;
}
#about {
padding: 10px 20px 20px 20px;
z-index: 4000;
position: absolute;
background-color: #505050;
color: white;
width: 700px;
left: 50%;
margin-left: -300px;
height: calc(100% - 200px);
top: 100px;
display: none;
overflow: hidden;
opacity: 0.95;
}
#dismiss-about {
cursor: pointer;
font-size: 30px;
float: right;
margin-bottom: 10px;
}
#inner {
width: 100%;
height: calc(100% - 60px);
overflow-y: auto;
-webkit-overflow-scrolling: touch;
}
</style>
<script src="https://js.arcgis.com/3.19/"></script>
<!-- Load the main Terraformer Core library for transforming GeoJSON -->
<script src="https://esri.github.io/geojson-layer-js/vendor/terraformer/terraformer.min.js"></script>
<!-- Load Terraformer ArcGIS Parser plugin library, which handles two way conversion between GeoJson and the ArcGIS Geometry format used by esri -->
<script src="https://esri.github.io/geojson-layer-js/vendor/terraformer-arcgis-parser/terraformer-arcgis-parser.min.js"></script>
<script>
var map;
//Data source from DC Open Data
var censusGeoJsonUrl = "https://opendata.arcgis.com/datasets/6969dd63c5cb4d6aa32f15effb8311f3_8.geojson";
require([
"esri/map", "esri/layers/FeatureLayer",
"esri/dijit/InfoWindow", "esri/InfoTemplate",
"esri/symbols/SimpleFillSymbol", "esri/renderers/SimpleRenderer",
"https://esri.github.io/geojson-layer-js/src/geojsonlayer.js",
"esri/symbols/SimpleLineSymbol",
"esri/Color", "esri/lang", "esri/graphic", "dojo/dom-style",
"esri/dijit/Legend",
"esri/renderers/ClassBreaksRenderer",
"dijit/TooltipDialog", "dijit/popup",
"dojo/dom-construct", "dojo/dom-class",
"dojo/number", "dojo/dom-attr", "dojo/on", "dojo/dom", "dojo/domReady!"
], function(
Map, FeatureLayer,
InfoWindow, InfoTemplate,
SimpleFillSymbol, SimpleRenderer,
GeoJsonLayer, SimpleLineSymbol, Color, esriLang, Graphic, domStyle,
Legend,
ClassBreaksRenderer,
TooltipDialog, dijitPopup,
domConstruct, domClass,
number, domAttr, on, dom, parser
) {
// Use the info window instead of the popup.
var infoWindow = new InfoWindow(null, domConstruct.create("div"));
infoWindow.startup();
map = new Map("map", {
basemap: "gray",
center: [-122.5, 45.5],
infoWindow: infoWindow,
zoom: 5
});
map.infoWindow.resize(275, 275);
var symbol = new SimpleFillSymbol();
symbol.setColor(new Color([150, 150, 150, 0.5]));
var renderer = new ClassBreaksRenderer(symbol, "FAGI_MEDIAN_2010");
renderer.addBreak({
minValue: 0,
maxValue: 20000,
symbol: new SimpleFillSymbol().setColor(new Color([56, 168, 0, 0.5])),
label: "0 - 20,000"
});
renderer.addBreak({
minValue: 20000,
maxValue: 30000,
symbol: new SimpleFillSymbol().setColor(new Color([139, 209, 0, 0.5])),
label: "20,000 - 30,000"
});
renderer.addBreak({
minValue: 30000,
maxValue: 50000,
symbol: new SimpleFillSymbol().setColor(new Color([255, 255, 0, 0.5])),
label: "30,000 - 50,000"
});
renderer.addBreak({
minValue: 50000,
maxValue: 80000,
symbol: new SimpleFillSymbol().setColor(new Color([255, 128, 0, 0.5])),
label: "50,000 - 80,000"
});
renderer.addBreak({
minValue: 80000,
maxValue: 100000,
symbol: new SimpleFillSymbol().setColor(new Color([255, 0, 0, 0.5])),
label: "80,000 - 100,000"
});
renderer.addBreak({
minValue: 100000,
maxValue: Infinity,
symbol: new SimpleFillSymbol().setColor(new Color([153, 0, 79, 0.5])),
label: "> 100,000"
});
//featureLayer derived from ArcGIS Server map service Url
var featureLayer = new FeatureLayer("https://maps2.dcgis.dc.gov/dcgis/rest/services/DCGIS_DATA/Demographic_WebMercator/MapServer/8", {
mode: FeatureLayer.MODE_SNAPSHOT,
outFields: ["*"]
});
featureLayer.setRenderer(renderer);
var legend = new Legend({
map: map,
layerInfos: [{
title: "Family Meidan Income",
layer: featureLayer
}]
}, "legend");
function addGeoJsonLayer(url) {
// A GeoJsonLayer derived from GeoJSON Url
var geoJsonLayer = new GeoJsonLayer({
url: url,
maxdraw: 10000
});
geoJsonLayer._simplePolygonSym = new SimpleFillSymbol("solid", new SimpleLineSymbol("solid", new Color([255, 0, 0, 0.9]), 1), new Color([150, 255, 150, 0.0]));
// Zoom to layer
geoJsonLayer.on("update-end", function(e) {
map.setExtent(e.target.extent.expand(1.2));
});
// Add to map
map.addLayer(geoJsonLayer);
}
map.infoWindow.resize(245, 125);
dialog = new TooltipDialog({
id: "tooltipDialog",
style: "position: absolute; width: 250px; font: normal normal normal 10pt Helvetica;z-index:100"
});
dialog.startup();
var highlightSymbol = new SimpleFillSymbol(
SimpleFillSymbol.STYLE_SOLID,
new SimpleLineSymbol(
SimpleLineSymbol.STYLE_SOLID,
new Color([255, 0, 0]), 3
),
new Color([125, 125, 125, 0.35])
);
//listen for when the onMouseOver event fires on the GraphicsLayer
//when fired, create a new graphic with the geometry from the event.graphic and add it to the maps graphics layer
featureLayer.on("mouse-over", function(evt) {
var t = "<b>Census Tract: ${TRACT}</b><hr>" + "<b>Population: </b>${P0010001:NumberFormat}<br>" + "<b>Area (Sq. Mi.): </b>${SQ_MILES:NumberFormat}<br>" + "<b>2010 Median Income: </b>$${FAGI_MEDIAN_2010:NumberFormat}";
var content = esriLang.substitute(evt.graphic.attributes, t);
var highlightGraphic = new Graphic(evt.graphic.geometry, highlightSymbol);
map.graphics.add(highlightGraphic);
dialog.setContent(content);
domStyle.set(dialog.domNode, "opacity", 1);
dijitPopup.open({
popup: dialog,
x: evt.pageX,
y: evt.pageY
});
});
function closeDialog() {
map.graphics.clear();
dijitPopup.close(dialog);
}
map.on("load", function() {
addGeoJsonLayer(censusGeoJsonUrl);
map.addLayer(featureLayer);
legend.startup();
map.graphics.enableMouseEvents();
map.graphics.on("mouse-out", closeDialog);
});
on(dom.byId("aboutTheMap"), "click", function() {
domStyle.set("about", "display", "block");
return false;
});
on(dom.byId("dismiss-about"), "click", function() {
domStyle.set("about", "display", "none");
return false;
});
});
</script>
</head>
<body class="tundra">
<div id="map">
</div>
<div class='header'>
<div id="title">Census Tracts by Median Income - 2010 @ Washington, DC</div>
<div id="sourceUrls" style="float:right">
<a id="dcOpenDataUrl" style="color:rgb(206,206,206);font-size:14px;margin-right: 10px;" href="https://github.com/DCgov/opendatadc-starterkit">This on Github</a>
<a id="aboutTheMap" style="color:rgb(206,206,206); font-size:14px; " href="javascript:void(0)">About This Map</a>
</div>
</div>
<div id="info">
<div id="legend"></div>
</div>
<div id="about">
<a id="dismiss-about">×</a>
<div id="inner">
<p style="font-size: 1.4em; text-transform: uppercase; text-align: center">About this map
</p>
<p style="font-size: 1.2em;">This sample demonstrates how to create a colorful interactive choropleth map of census tracts using data from DC Open Data with the help of Esri ArcGIS JS API.</p>
<p><strong>Instructions</strong>
<br/> Mouse over on census tracts for more information.</p>
<p><strong>Built with...</strong>
<br/> <a href="https://dojotoolkit.org/">Dojo</a>, <a href="https://developers.arcgis.com/javascript/">ArcGIS JS API</a></p>
<p><strong>Download Census Tracts - 2010 data in GeoJSON</strong>
<br/><a href="https://opendata.arcgis.com/datasets/6969dd63c5cb4d6aa32f15effb8311f3_8.geojson" target="_blank">https://opendata.arcgis.com/datasets/6969dd63c5cb4d6aa32f15effb8311f3_8.geojson</a></p>
<p><strong>View Census Tracts - 2010 data on DC Open Data</strong>
<br/><a href="http://opendata.dc.gov/datasets/census-tracts-2010" target="_blank">https://opendata.arcgis.com/datasets/6969dd63c5cb4d6aa32f15effb8311f3_8</a></p>
<p><strong>DC Open Data</strong>
<br/><a href="http://opendata.dc.gov" target="_blank">http://opendata.dc.gov</a></p>
<p><strong>DC Open Data Samples</strong>
<br/><a href="https://github.com/DCgov/opendatadc-starterkit" target="_blank">https://github.com/DCgov/opendatadc-starterkit</a></p>
<div id="logos" style="text-align: center">
<img src="images\WeAreWashintgonDCFinalLogo-Website.png" title="We are DC logo">
</div>
</div>
</div>
</body>
</html>