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Multiple polygons with d3.js
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; | |
| margin: auto; | |
| position: relative; | |
| width: 960px; | |
| } | |
| </style> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 700, | |
| svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height), | |
| scaleX = d3.scale.linear() | |
| .domain([-30,30]) //Give appropriate range in the scale | |
| .range([0,width]), | |
| scaleY = d3.scale.linear() | |
| .domain([0,50]) //Give appropriate range in the scale | |
| .range([height,0]); | |
| d3.json("polygons.json", function(data) { | |
| svg.selectAll("polygon") | |
| .data(data.Polygons) | |
| .enter().append("polygon") | |
| .attr("points",function(d) { | |
| return d.points.map(function(d) { return [scaleX(d.x),scaleY(d.y)].join(","); }).join(" ");}) | |
| .attr("stroke","black") | |
| .attr("stroke-width",2); | |
| }); | |
| </script> |
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| { | |
| "Polygons": [{ | |
| "name": "polygon 1", | |
| "points":[ | |
| {"x":0.0, "y":25.0}, | |
| {"x":8.5,"y":23.4}, | |
| {"x":13.0,"y":21.0}, | |
| {"x":19.0,"y":15.5} | |
| ] | |
| }, | |
| { | |
| "name": "polygon 2", | |
| "points":[ | |
| {"x":0.0, "y":50.0}, | |
| {"x":15.5,"y":23.4}, | |
| {"x":18.0,"y":30.0}, | |
| {"x":20.0,"y":16.5} | |
| ] | |
| }, | |
| { | |
| "name": "polygon 3", | |
| "points":[ | |
| {"x":10, "y":30.0}, | |
| {"x":19,"y":15.4}, | |
| {"x":18.4,"y":46.0}, | |
| {"x":15.8,"y":19.5} | |
| ] | |
| } | |
| ] | |
| } |
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