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forked from anonymous's block: fresh block
forked from anonymous's block: fresh block
forked from anonymous's block: fresh block
Last active
January 26, 2017 02:52
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Example of slider
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| license: mit |
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <style> | |
| body { font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;} | |
| h1{font-size: 32px; color:#444;} | |
| #slider1{ | |
| width: 300px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <h1>Example of slider with D3.js</h1> | |
| <input id="slider1" type="range" min="2000" max="2020" step="1" value="2000"/> | |
| <div id="svg"></div> | |
| <script> | |
| // Feel free to change or delete any of the code you see in this editor! | |
| var width = 960, height = 500; | |
| var svg = d3.select("#svg").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| var padding = 30; | |
| var colors = d3.scaleOrdinal(d3.schemeCategory10); | |
| var data = d3.range(20).map((d)=>{ | |
| var values = d3.range(20).map((d)=>({id: d, x: Math.random()*300, y: Math.random()*100})); | |
| return {year: 2000 + d, values: values}; | |
| }); | |
| var yScale = d3.scaleLinear() | |
| .domain([0,100]) | |
| .range([height - padding, padding]); | |
| var xScale = d3.scaleLinear() | |
| .domain([0,300]) | |
| .range([padding, width - padding]); | |
| var xAxis = d3.axisBottom(xScale); | |
| var yAxis = d3.axisLeft(yScale); | |
| var gX = svg.append("g") | |
| .attr("transform", "translate(0," + (height - padding) + ")") | |
| .call(xAxis); | |
| var gY = svg.append("g") | |
| .attr("transform", "translate(" + padding + ",0)") | |
| .call(yAxis); | |
| var year = svg.append("text") | |
| .attr("font-family", "Helvetica") | |
| .attr("font-size", 18) | |
| .attr("y", 20) | |
| .attr("x", 800) | |
| .text("Year: 2000"); | |
| var circles = svg.selectAll(".circles") | |
| .data(data.filter(d=>d.year === 2000)[0].values, d=> d.id) | |
| .enter() | |
| .append("circle") | |
| .attr("cx", d=>xScale(d.x)) | |
| .attr("cy", d=>yScale(d.y)) | |
| .attr("r", 8) | |
| .attr("fill", d=> colors(d.id)); | |
| d3.select("input").on("input", function(){ | |
| updateCircles(this.value) | |
| }); | |
| function updateCircles(sliderYear){ | |
| console.log(sliderYear); | |
| var newData = data.filter(d=>d.year === +sliderYear)[0].values; | |
| circles.data(newData, d => d.id) | |
| .transition() | |
| .duration(250) | |
| .attr("cx", d=>xScale(d.x)) | |
| .attr("cy", d=>yScale(d.y)); | |
| year.text("Year: " + sliderYear); | |
| } | |
| </script> | |
| </body> |
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