Europe in two projections:
Lambert Equal Area (green) - statistical analysis and display
Lambert Conformal Conic (red) - conformal pan-European mapping at
scales smaller or equal to 1:500,000
Source: Map Projections for Europe (pdf)
Last active
March 8, 2018 23:00
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Europe - LAEA vs LCC
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| license: gpl-3.0 | |
| height: 500 | |
| border: no |
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.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <script src="//d3js.org/d3.v4.min.js"></script> | |
| <script src="//d3js.org/topojson.v2.min.js"></script> | |
| <style> | |
| .lcc { | |
| fill: none; | |
| stroke: red; | |
| opacity: 0.5; | |
| } | |
| .laea { | |
| fill: none; | |
| stroke: green; | |
| opacity: 0.5; | |
| } | |
| </style> | |
| <body> | |
| <script> | |
| var width = 960, | |
| height = 500; | |
| var projLcc = d3.geoConicConformal() | |
| .rotate([-10.0, 0.0]) | |
| .center([0.0, 52.0]) | |
| .parallels([35.0, 65.0]) | |
| .scale(600) | |
| .precision(.1); | |
| var projLaea = d3.geoAzimuthalEqualArea() | |
| .rotate([-10.0, -52.0]) | |
| .scale(600) | |
| .precision(.1); | |
| var pathLcc = d3.geoPath() | |
| .projection (projLcc); | |
| var pathLaea = d3.geoPath() | |
| .projection (projLaea); | |
| var graticule = d3.geoGraticule(); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| var featuresLcc = svg.append("g") | |
| .attr("class", "lcc"); | |
| var featuresLaea = svg.append("g") | |
| .attr("class", "laea"); | |
| d3.json("110m.json", function (error, europe) { | |
| if (error) throw error; | |
| var countries = topojson.feature(europe, europe.objects.countries).features; | |
| featuresLcc.append("path") | |
| .datum(graticule) | |
| .attr("d", pathLcc); | |
| featuresLcc.selectAll("countries") | |
| .data(countries) | |
| .enter().append("path") | |
| .attr("d", pathLcc); | |
| featuresLaea.append("path") | |
| .datum(graticule) | |
| .attr("d", pathLaea); | |
| featuresLaea.selectAll("countries") | |
| .data(countries) | |
| .enter().append("path") | |
| .attr("d", pathLaea); | |
| }); | |
| </script> |
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