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Testing map labels with background
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| license: mit | |
| height: 600 | |
| border: none |
This file contains hidden or 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.
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Testing map labels</title> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="http://d3js.org/d3.geo.projection.v0.min.js"></script> | |
| <script src="http://d3js.org/topojson.v1.min.js"></script> | |
| <style> | |
| body { | |
| font-family: 'Source Sans Pro', Arial, Helvetica, sans-serif; | |
| font-size: 62.5%; | |
| } | |
| path { | |
| stroke-linejoin: round; | |
| } | |
| .land-glow { | |
| fill-opacity: .2; | |
| filter: url(#blur); | |
| fill: #1e1e1e; | |
| } | |
| .land-fill { | |
| fill-opacity: 0; | |
| stroke: rgb(70, 70, 70); | |
| stroke-width: .35px; | |
| } | |
| .region { | |
| stroke: rgb(70, 70, 70); | |
| stroke-width: 0.01rem; | |
| } | |
| .label-bg { | |
| pointer-events: none; | |
| text-anchor: middle; | |
| fill: none; | |
| stroke: white; | |
| font-size: 0.9rem; | |
| stroke-width: 0.2rem; | |
| opacity: 0.9; | |
| } | |
| .label { | |
| z-index: 10; | |
| pointer-events: none; | |
| text-anchor: middle; | |
| font-size: 0.9rem; | |
| text-shadow: 0 0 3px #fff; | |
| fill: rgb(70, 70, 70); | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script type="text/javascript"> | |
| var width = 960, | |
| height = 600; | |
| var path = d3.geo.path() | |
| .projection(d3.geo.robinson() | |
| .scale(2700) | |
| .center([3.582022, 40.9582426]) | |
| .translate([width / 7, height / 1.8])); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .append('g'); | |
| var defs = svg.append("defs"); | |
| defs.append("filter") | |
| .attr("id", "blur") | |
| .append("feGaussianBlur") | |
| .attr("stdDeviation", 5); | |
| d3.json("italy.json", function(error, italy) { | |
| var map = topojson.feature(italy, italy.objects.reg2011); | |
| defs.append("path") | |
| .datum(map) | |
| .attr("id", "land") | |
| .attr("d", path); | |
| svg.append("use") | |
| .attr("class", "land-glow") | |
| .attr("xlink:href", "#land"); | |
| svg.append("use") | |
| .attr("class", "land-fill") | |
| .attr("xlink:href", "#land"); | |
| var color = d3.scale.quantize() | |
| .domain(d3.extent(map.features, function(d) { | |
| return d.properties.SHAPE_Leng; | |
| })) | |
| .range(["#fff7fb", "#ece7f2", "#d0d1e6", "#a6bddb", "#74a9cf"]); | |
| var region = svg.append("g").attr("class", "polygons"); | |
| region.selectAll(".region").data(map.features) | |
| .enter().insert("path") | |
| .attr("class", "region") | |
| .attr("d", path) | |
| .style("fill", function(d, i) { | |
| return color(d.properties.SHAPE_Leng); | |
| }); | |
| var labelsBg = svg.append("g").attr("class", "label-group-bg"); | |
| labelsBg.selectAll(".label-bg") | |
| .data(map.features) | |
| .enter() | |
| .append("text") | |
| .attr("class", "label-bg") | |
| .attr("x", function(d) { | |
| return path.centroid(d)[0]; | |
| }) | |
| .attr("y", function(d) { | |
| return path.centroid(d)[1]; | |
| }) | |
| .text(function(d) { | |
| return d.properties.NOME_REG; | |
| }); | |
| var labels = svg.append("g").attr("class", "label-group"); | |
| labels.selectAll(".label") | |
| .data(map.features) | |
| .enter() | |
| .append("text") | |
| .attr("class", "label") | |
| .attr("x", function(d) { | |
| return path.centroid(d)[0]; | |
| }) | |
| .attr("y", function(d) { | |
| return path.centroid(d)[1]; | |
| }) | |
| .text(function(d) { | |
| return d.properties.NOME_REG; | |
| }); | |
| }) | |
| </script> | |
| </body> | |
| </html> |
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