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March 20, 2017 17:02
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User Input Coordinate
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| // https://d3js.org/d3-polygon/ Version 1.0.2. Copyright 2016 Mike Bostock. | |
| !function(n,r){"object"==typeof exports&&"undefined"!=typeof module?r(exports):"function"==typeof define&&define.amd?define(["exports"],r):r(n.d3=n.d3||{})}(this,function(n){"use strict";function r(n,r){return n[0]-r[0]||n[1]-r[1]}function e(n){for(var r=n.length,e=[0,1],t=2,o=2;o<r;++o){for(;t>1&&f(n[e[t-2]],n[e[t-1]],n[o])<=0;)--t;e[t++]=o}return e.slice(0,t)}var t=function(n){for(var r,e=-1,t=n.length,o=n[t-1],f=0;++e<t;)r=o,o=n[e],f+=r[1]*o[0]-r[0]*o[1];return f/2},o=function(n){for(var r,e,t=-1,o=n.length,f=0,u=0,l=n[o-1],i=0;++t<o;)r=l,l=n[t],i+=e=r[0]*l[1]-l[0]*r[1],f+=(r[0]+l[0])*e,u+=(r[1]+l[1])*e;return i*=3,[f/i,u/i]},f=function(n,r,e){return(r[0]-n[0])*(e[1]-n[1])-(r[1]-n[1])*(e[0]-n[0])},u=function(n){if((o=n.length)<3)return null;var t,o,f=new Array(o),u=new Array(o);for(t=0;t<o;++t)f[t]=[+n[t][0],+n[t][1],t];for(f.sort(r),t=0;t<o;++t)u[t]=[f[t][0],-f[t][1]];var l=e(f),i=e(u),g=i[0]===l[0],a=i[i.length-1]===l[l.length-1],c=[];for(t=l.length-1;t>=0;--t)c.push(n[f[l[t]][2]]);for(t=+g;t<i.length-a;++t)c.push(n[f[i[t]][2]]);return c},l=function(n,r){for(var e,t,o=n.length,f=n[o-1],u=r[0],l=r[1],i=f[0],g=f[1],a=!1,c=0;c<o;++c)f=n[c],e=f[0],t=f[1],t>l!=g>l&&u<(i-e)*(l-t)/(g-t)+e&&(a=!a),i=e,g=t;return a},i=function(n){for(var r,e,t=-1,o=n.length,f=n[o-1],u=f[0],l=f[1],i=0;++t<o;)r=u,e=l,f=n[t],u=f[0],l=f[1],r-=u,e-=l,i+=Math.sqrt(r*r+e*e);return i};n.polygonArea=t,n.polygonCentroid=o,n.polygonHull=u,n.polygonContains=l,n.polygonLength=i,Object.defineProperty(n,"__esModule",{value:!0})}); |
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| <html><head><meta charset="utf-8"> | |
| <title>User Input County Selection</title> | |
| <style> | |
| .button { | |
| font-family: Play; | |
| color: #ffffff; | |
| font-size: 16px; | |
| text-align: center; | |
| display: inline-block; | |
| -webkit-user-select: none; | |
| width: 3.2%; | |
| background: #303030; | |
| padding: 10px 20px 10px 20px; | |
| } | |
| .button:hover { | |
| background: #4c4d4d; | |
| cursor:default; | |
| } | |
| </style> | |
| </head><body> | |
| <script src="https://d3js.org/d3.v3.min.js"></script> | |
| <script src="d3-polygon.v1.min.js"></script> | |
| <script src="topojson.v1.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 500; | |
| var margins = { left: 0, top: 0, right: 0, bottom: 0 }; | |
| var projection = d3.geo.albersUsa() | |
| .scale(1070) | |
| .translate([width / 2, height / 2]); | |
| var path = d3.geo.path() | |
| .projection(projection); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr('class','main_svg') | |
| .attr("height", height+margins.top); | |
| var g = svg.append("g"); | |
| var countiesG = g.append("g") | |
| .attr("id", "counties"); | |
| d3.json("us_ap.json", function(error, us) { | |
| countiesG | |
| .selectAll("path") | |
| .data(topojson.feature(us, us.objects.counties).features) | |
| .enter().append("path") | |
| .attr("d", path) | |
| .attr("stroke-width",'.5px') | |
| .attr('stroke','#fff') | |
| .attr('fill','#aaa'); | |
| var lat = d3.select("#latValue").node(); | |
| var long = d3.select("#lonValue").node(); | |
| var search = d3.select('#button_search'); | |
| search.on('click', function() { | |
| console.log(long.value) | |
| var containing_county = us.objects.counties.geometries.filter(function(polygon) { | |
| return d3.polygonContains(polygon, [long.value, lat.value]); | |
| }); | |
| console.log(containing_county) | |
| }); | |
| }); | |
| </script> | |
| <p> | |
| <label for="latValue" | |
| style="display: inline-block;width:240px;text-align:right;font-size:18px;font-family:Play"> | |
| Latitude:<span id="latValue-value"></span> | |
| </label> | |
| <input type="number"min="-360"max="360"step="1"value="0" id="latValue"> | |
| <label for="lonValue" | |
| style="display: inline-block;width:240px;text-align:right;font-size:18px;font-family:Play"> | |
| Longitude:<span id="lonValue-value"></span> | |
| </label> | |
| <input type="number"min="-360"max="360"step="1"value="0" id="lonValue"> | |
| </p> | |
| <div id="button_search" class="button"> Search</div> | |
| </body> | |
| </html> |
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| // https://github.com/topojson/topojson-client Version 1.8.0. Copyright 2016 Mike Bostock. | |
| !function(n,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t(n.topojson=n.topojson||{})}(this,function(n){"use strict";function t(n){if(!n)return h;var t,r,e=n.scale[0],o=n.scale[1],i=n.translate[0],u=n.translate[1];return function(n,f){f||(t=r=0),n[0]=(t+=n[0])*e+i,n[1]=(r+=n[1])*o+u}}function r(n){if(!n)return h;var t,r,e=n.scale[0],o=n.scale[1],i=n.translate[0],u=n.translate[1];return function(n,f){f||(t=r=0);var c=Math.round((n[0]-i)/e),a=Math.round((n[1]-u)/o);n[0]=c-t,n[1]=a-r,t=c,r=a}}function e(n,t){for(var r,e=n.length,o=e-t;o<--e;)r=n[o],n[o++]=n[e],n[e]=r}function o(n,t){for(var r=0,e=n.length;r<e;){var o=r+e>>>1;n[o]<t?r=o+1:e=o}return r}function i(n,t){var r={type:"Feature",id:t.id,properties:t.properties||{},geometry:u(n,t)};return null==t.id&&delete r.id,r}function u(n,r){function o(n,t){t.length&&t.pop();for(var 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