Line chart with points hoover triggering updates of information box on the right.
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September 3, 2016 09:50
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Line chart with information box
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .line { | |
| fill: none; | |
| stroke: steelblue; | |
| stroke-width: 1.5px; | |
| } | |
| </style> | |
| <head> | |
| <link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"> | |
| </head> | |
| <body> | |
| <script src="//d3js.org/d3.v4.min.js"></script> | |
| <div class="row" style="width:860px;"> | |
| <div class="col-sm-9" id="g1"></div> | |
| <div class="col-sm-3" id="g2" ><br/><br /><br /> | |
| <div id="point_info" class="alert" style="background-color:lightgray; visibility:hidden;"> | |
| <strong>Point Info!</strong><br/><br /> | |
| ID: <p id="point_id" style="display:inline;">...</p><br /> | |
| Value: <p id="point_value" style="display:inline;">...</p><br /> | |
| </div> | |
| </div> | |
| </div> | |
| <script> | |
| function randomData(samples) { | |
| var data = [], | |
| random = d3.randomNormal(); | |
| for (i = 0; i < samples; i++) { | |
| data.push({ | |
| id: i + 1, | |
| y: d3.format(".3")(random()) | |
| }); | |
| } | |
| return data; | |
| } | |
| var data = randomData(200); | |
| var margin = {top: 20, right: 20, bottom: 30, left: 50}, | |
| width = 560 - margin.left - margin.right, | |
| height = 300 - margin.top - margin.bottom; | |
| var x = d3.scaleLinear() | |
| .range([0, width]); | |
| var y = d3.scaleLinear() | |
| .range([height, 0]); | |
| var line = d3.line() | |
| .x(function(d) { return x(d.id); }) | |
| .y(function (d) { return y(d.y); }); | |
| var svg = d3.select("#g1").append("svg") | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height + margin.top + margin.bottom) | |
| .append("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| data.forEach(function (d) { | |
| Object.keys(data[0]).forEach(function (k) { | |
| d[k] = +d[k]; | |
| }); | |
| }); | |
| x.domain(d3.extent(data, function(d) { return d.id; })); | |
| y.domain(d3.extent(data, function (d) { return d.y; })); | |
| var gX = svg.append("g") | |
| .attr("class", "axis axis--x") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(d3.axisBottom(x)); | |
| var gY = svg.append("g") | |
| .attr("class", "axis axis--y") | |
| .call(d3.axisLeft(y)); | |
| svg.append("path") | |
| .datum(data) | |
| .attr("class", "line") | |
| .attr("d", line); | |
| svg.selectAll(".dot") | |
| .data(data) | |
| .enter().append("circle") | |
| .attr("class", "dot") | |
| .attr("r", 2.5) | |
| .attr("cx", function (d) { return x(d.id); }) | |
| .attr("cy", function (d) { return y(d.y); }) | |
| .attr("opacity", 1) | |
| .on("mouseover", function (d) { | |
| d3.selectAll(".focus_circle").transition() | |
| .duration(150).remove(); | |
| svg.append("circle") | |
| .attr("class", "focus_circle") | |
| .attr("cx", x(d.id)) | |
| .attr("cy", y(d.y)) | |
| .attr("r", 5) | |
| .style("opacity", 1.0) | |
| .style("fill", "#f46d43"); | |
| d3.select("#point_info").transition() | |
| .duration(700).style("visibility", "visible"); | |
| d3.select("#point_id").html(d.id); | |
| d3.select("#point_value").html(d.y); | |
| }); | |
| </script> | |
| </body> |
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