Created
June 23, 2012 21:09
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barStack (flex layout)
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script src="http://mbostock.github.com/d3/d3.v2.js"></script> | |
| <title>barStack</title> | |
| <style> | |
| .axis text { | |
| font: 10px sans-serif; | |
| } | |
| .axis path, .axis line { | |
| fill: none; | |
| stroke: #000; | |
| shape-rendering: crispEdges; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script type="text/javascript" > | |
| function barStack(d) { | |
| var l = d[0].length | |
| while (l--) { | |
| var posBase = 0, negBase = 0; | |
| d.forEach(function(d) { | |
| d=d[l] | |
| d.size = Math.abs(d.y) | |
| if (d.y<0) { | |
| d.y0 = negBase | |
| negBase-=d.size | |
| } else | |
| { | |
| d.y0 = posBase = posBase + d.size | |
| } | |
| }) | |
| } | |
| d.extent= d3.extent(d3.merge(d3.merge(d.map(function(e) { return e.map(function(f) { return [f.y0,f.y0-f.size]})})))) | |
| return d | |
| } | |
| /* Here is an example */ | |
| var data = [[{x:1,y:3},{x:2,y:6},{x:3,y:-3}], | |
| [{x:1,y:4},{x:2,y:-2},{x:3,y:-9}], | |
| [{x:1,y:10},{x:2,y:-3},{x:3,y:4}]] | |
| var h=500 | |
| ,w=500 | |
| ,margin=10 | |
| ,color = d3.scale.category10() | |
| ,x = d3.scale.ordinal() | |
| .domain(d3.range(data[0].length+1)) | |
| .rangeRoundBands([margin,w-margin], .1) | |
| ,y = d3.scale.linear() | |
| .range([h-margin,0+margin]) | |
| ,xAxis = d3.svg.axis().scale(x).orient("bottom").tickSize(6, 0) | |
| ,yAxis = d3.svg.axis().scale(y).orient("left") | |
| barStack(data) | |
| y.domain(data.extent) | |
| svg = d3.select("body") | |
| .append("svg") | |
| .attr("height",h) | |
| .attr("width",w) | |
| svg.selectAll(".series").data(data) | |
| .enter().append("g").classed("series",true).style("fill", function(d,i) { return color(i)}) | |
| .selectAll("rect").data(Object) | |
| .enter().append("rect") | |
| svg.append("g").attr("class","axis x") | |
| svg.append("g").attr("class","axis y") | |
| var layout = 0,dur=0 | |
| redraw() | |
| dur = 1500 | |
| function redraw() { | |
| if (layout=!layout) { | |
| /* Readjust the range to witdh and height */ | |
| x.rangeRoundBands([margin,w-margin], .1) | |
| y.range([h-margin,0+margin]) | |
| /* Reposition and redraw axis */ | |
| svg.select(".x.axis") | |
| .transition().duration(dur) | |
| .attr("transform","translate (0 "+y(0)+")") | |
| .call(xAxis.orient("bottom")) | |
| svg.select(".y.axis") | |
| .transition().duration(dur) | |
| .attr("transform","translate ("+x(0)+" 0)") | |
| .call(yAxis.orient("left")) | |
| /* Reposition the elements */ | |
| svg.selectAll(".series rect") | |
| .transition().duration(dur) | |
| .attr("x",function(d,i) { return x(d.x)}) | |
| .attr("y",function(d) { return y(d.y0)}) | |
| .attr("height",function(d) { return y(0)-y(d.size)}) | |
| .attr("width",x.rangeBand()) | |
| } else { | |
| /* Readjust the range to witdh and height */ | |
| x.rangeRoundBands([h-margin,0+margin], .1) | |
| y.range([margin,w-margin]) | |
| /* Reposition and redraw axis */ | |
| svg.select(".x.axis") | |
| .transition().duration(dur) | |
| .attr("transform","translate ("+y(0)+" 0)") | |
| .call(xAxis.orient("left")) | |
| svg.select(".y.axis") | |
| .transition().duration(dur) | |
| .attr("transform","translate (0 "+x(0)+")") | |
| .call(yAxis.orient("bottom")) | |
| /* Reposition the elements */ | |
| svg.selectAll(".series rect") | |
| .transition().duration(dur) | |
| .attr("y",function(d,i) { return x(d.x)}) | |
| .attr("x",function(d) { return y(d.y0-d.size)}) | |
| .attr("width",function(d) { return y(d.size)-y(0)}) | |
| .attr("height",x.rangeBand()) | |
| } | |
| d3.select("body").append("button") | |
| .attr("type","button") | |
| .text("Change Layout") | |
| .style("position","absolute") | |
| .style("left","5px") | |
| .style("top","5px") | |
| .on("click",redraw) | |
| } | |
| </script> | |
| </body> | |
| </html> |
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