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Created
January 29, 2018 17:00
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Map with Custom Graticule
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| license: mit |
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> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| background: white; | |
| } | |
| .stroke { | |
| fill: none; | |
| stroke: #000; | |
| stroke-width: 1.5px; | |
| } | |
| .fill { | |
| fill: #fff; | |
| } | |
| .graticule { | |
| fill: none; | |
| stroke: #777; | |
| stroke-width: .5px; | |
| stroke-opacity: .5; | |
| } | |
| .land { | |
| fill: #222; | |
| } | |
| .boundary { | |
| fill: none; | |
| stroke: #fff; | |
| stroke-width: .5px; | |
| } | |
| </style> | |
| <body> | |
| <div id="map"></div> | |
| <script src="https://unpkg.com/d3@4"></script> | |
| <script src="https://unpkg.com/d3-geo-projection@2"></script> | |
| <script src="https://unpkg.com/topojson-client@3"></script> | |
| <script> | |
| const map = d3.select("#map"); | |
| const width = map.node().getBoundingClientRect().width; | |
| const height = width / 2; | |
| const color = d3.scaleThreshold() | |
| .domain(d3.range(9)) | |
| .range(d3.schemeCategory10); | |
| const projection = d3.geoNaturalEarth2().rotate([-11.5,0]); | |
| const path = d3.geoPath().projection(projection); | |
| const zoom = d3.zoom() | |
| .scaleExtent([1, 40]) | |
| .translateExtent([[0,0], [width, height]]) | |
| .extent([[0, 0], [width, height]]) | |
| .on("zoom", zoomed); | |
| const svg = map.append("svg") | |
| .attr("xmlns:xlink","http://www.w3.org/1999/xlink") | |
| .attr("width", width) | |
| .attr("height", height); | |
| const g = svg.append('g'); | |
| /* | |
| const graticule = d3.geoGraticule(); | |
| */ | |
| const graticule = d3.geoGraticule10(); | |
| //console.log(grat.coordinates[4]=grat.coordinates[3]); | |
| svg.append("path") | |
| .datum(graticule) | |
| .attr("class", "graticule") | |
| .attr("d", path); | |
| d3.json("https://unpkg.com/world-atlas@1/world/110m.json", function(error, world) { | |
| if (error) throw error; | |
| svg.selectAll("path") | |
| .data(topojson.feature(world, world.objects.countries).features) | |
| .enter().append("path") | |
| .attr("class",".border") | |
| .attr('fill', d => color( Math.random() * 10 )) | |
| .attr("d", path); | |
| }); | |
| function zoomed(){ | |
| g.attr("transform", d3.event.transform); | |
| } | |
| </script> | |
| </body> |
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