Built with blockbuilder.org
Created
May 16, 2018 02:44
-
-
Save VictorHom/5788d6241bc18457aac1f7eb0c06d48c to your computer and use it in GitHub Desktop.
fresh block
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| license: mit |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Point on a map D3</title> | |
| <script src="http://d3js.org/d3.v4.min.js" charset="utf-8"></script> | |
| <script src="http://d3js.org/topojson.v1.min.js"></script> | |
| <style type="text/css"> | |
| .feature { | |
| fill: none; | |
| stroke: grey; | |
| stroke-width: 1px; | |
| stroke-linejoin: round; | |
| } | |
| .mesh { | |
| fill: none; | |
| stroke: lightgrey; | |
| stroke-width: 2px; | |
| stroke-linejoin: round; | |
| } | |
| h1 { | |
| font-family: sans-serif; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <h1>Point in the north west part of SF</h1> | |
| <script type="text/javascript"> | |
| var width = 950, | |
| height = 550; | |
| // set projection | |
| var projection = d3.geoMercator(); | |
| // create path variable | |
| var path = d3.geoPath() | |
| .projection(projection); | |
| d3.json("us.json", function(error, topo) { console.log(topo); | |
| states = topojson.feature(topo, topo.objects.states).features | |
| // set projection parameters | |
| projection | |
| .scale(1000) | |
| .center([-106, 37.5]) | |
| // create svg variable | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| // points | |
| aa = [-122.490402, 37.786453]; | |
| bb = [-122.389809, 37.72728]; | |
| console.log(projection(aa),projection(bb)); | |
| // add states from topojson | |
| svg.selectAll("path") | |
| .data(states).enter() | |
| .append("path") | |
| .attr("class", "feature") | |
| .style("fill", "steelblue") | |
| .attr("d", path); | |
| // put boarder around states | |
| svg.append("path") | |
| .datum(topojson.mesh(topo, topo.objects.states, function(a, b) { return a !== b; })) | |
| .attr("class", "mesh") | |
| .attr("d", path); | |
| // add circles to svg | |
| svg.selectAll("circle") | |
| .data([aa,bb]).enter() | |
| .append("circle") | |
| .attr("cx", function (d) { console.log(projection(d)); return projection(d)[0]; }) | |
| .attr("cy", function (d) { return projection(d)[1]; }) | |
| .attr("r", "8px") | |
| .attr("fill", "red") | |
| }); | |
| </script> | |
| </body> | |
| </html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment