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4.0 Color Scales - Sequential
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| <!DOCTYPE html> | |
| <html> | |
| <body> | |
| <style> | |
| body { | |
| font: 12px sans-serif; | |
| } | |
| div { | |
| max-width: 950px; | |
| } | |
| </style> | |
| <div class="container"></div> | |
| <div class="sequentialButtons">Sequential Color Scales: </div> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script src="//d3js.org/d3-scale-chromatic.v0.3.min.js"></script> | |
| <script> | |
| //JS to go here | |
| var interpolators = [ | |
| // These are from d3-scale. | |
| "Viridis", | |
| "Inferno", | |
| "Magma", | |
| "Plasma", | |
| "Warm", | |
| "Cool", | |
| "Rainbow", | |
| "CubehelixDefault", | |
| // These are from d3-scale-chromatic | |
| "Blues", | |
| "Greens", | |
| "Greys", | |
| "Oranges", | |
| "Purples", | |
| "Reds", | |
| "BuGn", | |
| "BuPu", | |
| "GnBu", | |
| "OrRd", | |
| "PuBuGn", | |
| "PuBu", | |
| "PuRd", | |
| "RdPu", | |
| "YlGnBu", | |
| "YlGn", | |
| "YlOrBr", | |
| "YlOrRd" | |
| ]; | |
| var width = 960, | |
| height = 500; | |
| var svg = d3.select("body") | |
| .append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .append("g") | |
| var colorScale = d3.scaleQuantize() | |
| .domain([0, width]).range(Array.from({length: 9}).map((_, i) => d3.interpolateViridis(i * 1 / 9))) | |
| var bars = svg.selectAll(".bars") | |
| .data(d3.range(width), function (d) { return d; }) | |
| .enter().append("rect") | |
| .attr("class", "bars") | |
| .attr("x", function (d, i) { return i; }) | |
| .attr("y", 0) | |
| .attr("height", height) | |
| .attr("width", 1) | |
| .style("fill", function (d, i) { return colorScale(d); }) | |
| var sequentialButtons = d3.select(".sequentialButtons") | |
| .selectAll("button") | |
| .data(interpolators) | |
| .enter().append("button") | |
| .text(function (d) { return d; }) | |
| .on("click", function (buttonValue) { | |
| var colorScale = d3.scaleQuantize() | |
| .domain([0, width]).range(Array.from({length: 9}).map((_, i) => d3[`interpolate${buttonValue}`](i * 1 / 9))) | |
| svg.selectAll(".bars") | |
| .transition() | |
| .style("fill", function (d) { return colorScale(d); }); | |
| }); | |
| </script> |
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