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Simple Scatter Chart Example
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>The d3 test</title> | |
| <style> | |
| .chart { | |
| shape-rendering: crispEdges; | |
| } | |
| .main text { | |
| font: 12px sans-serif; | |
| } | |
| .axis line, .axis path { | |
| stroke: black; | |
| } | |
| </style> | |
| <script type="text/javascript" src="http://mbostock.github.com/d3/d3.v2.js"></script> | |
| </head> | |
| <body> | |
| <div class='content'> | |
| <!-- /the chart goes here --> | |
| </div> | |
| <script type="text/javascript" src="scatterchart.js"></script> | |
| </body> | |
| </html> |
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| var xdata = [5, 10, 15, 20], | |
| ydata = [3, 17, 4, 6]; | |
| var margin = {top: 20, right: 15, bottom: 60, left: 60} | |
| , width = 960 - margin.left - margin.right | |
| , height = 500 - margin.top - margin.bottom; | |
| var x = d3.scale.linear() | |
| .domain([0, d3.max(xdata)]) | |
| .range([ 0, width ]); | |
| var y = d3.scale.linear() | |
| .domain([0, d3.max(ydata)]) | |
| .range([ height, 0 ]); | |
| var chart = d3.select('body') | |
| .append('svg:svg') | |
| .attr('width', width + margin.right + margin.left) | |
| .attr('height', height + margin.top + margin.bottom) | |
| .attr('class', 'chart') | |
| var main = chart.append('g') | |
| .attr('transform', 'translate(' + margin.left + ',' + margin.top + ')') | |
| .attr('width', width) | |
| .attr('height', height) | |
| .attr('class', 'main') | |
| // draw the x axis | |
| var xAxis = d3.svg.axis() | |
| .scale(x) | |
| .orient('bottom'); | |
| main.append('g') | |
| .attr('transform', 'translate(0,' + height + ')') | |
| .attr('class', 'main axis date') | |
| .call(xAxis); | |
| // draw the y axis | |
| var yAxis = d3.svg.axis() | |
| .scale(y) | |
| .orient('left'); | |
| main.append('g') | |
| .attr('transform', 'translate(0,0)') | |
| .attr('class', 'main axis date') | |
| .call(yAxis); | |
| var g = main.append("svg:g"); | |
| function redraw(){ | |
| dots = g.selectAll("scatter-dots") | |
| .data(ydata) | |
| dots.enter().append("svg:circle") | |
| .attr("cy", function (d) { return y(d); } ) | |
| .attr("cx", function (d,i) { return x(xdata[i]); } ) | |
| .attr("r", 10) | |
| .style("opacity", 0.6); | |
| dots.exit().remove(); | |
| } |
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