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D3 - using SVG Bounding Box to get the "automatic padding"
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script type="text/javascript" src="http://mbostock.github.com/d3/d3.js?2.0.0"></script> | |
| <style> | |
| path { fill:none;stroke:black} | |
| </style> | |
| <head>. | |
| <body> | |
| <script type="text/javascript"> | |
| var w=960, | |
| h=450; | |
| svg=d3.select("body").append("svg:svg").attr("height",h).attr("width",w) | |
| x = d3.scale.linear().range([0, w]).domain([0,100]), | |
| y = d3.scale.linear().range([h, 0]) | |
| xAxis = d3.svg.axis().scale(x).tickSize(-h).ticks(5), | |
| yAxis = d3.svg.axis().scale(y).tickSize(-w).orient("left"); | |
| var domain=100 | |
| // Add the x-axis. | |
| x_svg=svg.append("svg:g") | |
| .attr("class", "x axis") | |
| .attr("transform", "translate(0," + h + ")") | |
| .call(xAxis) | |
| // Add the y-axis. | |
| y_svg=axis = svg.append("svg:g") | |
| .attr("class", "y axis") | |
| // Add y-title - we position it when we change the domain | |
| y_title = svg.append("svg:g") | |
| .append("svg:text") | |
| .text("This is the title of the y-axis") | |
| .style("text-anchor","middle") | |
| // add Chart Title | |
| svg.append("svg:text") | |
| .text("THIS IS THE CHART TITLE") | |
| .attr("x",w/2) | |
| .attr("dy","-1em") | |
| .style("text-anchor","middle") | |
| // add x-title | |
| svg.append("svg:text") | |
| .text("And here is the x-title") | |
| .attr("x",w/2) | |
| .attr("y",h) | |
| .attr("dy","2em") | |
| .style("text-anchor","middle") | |
| // add a circle | |
| svg.append("svg:circle") | |
| .attr("cx", w/2) | |
| .attr("cy", h/2) | |
| .attr("r", 100) | |
| .attr("fill", "#f00") | |
| .attr("stroke", "#000") | |
| function changeDomain() { | |
| domain = (domain==100) ? 999999999 : 100; | |
| y.domain([0,domain]) | |
| x.domain([0,domain]) | |
| y_svg.call(yAxis) | |
| x_svg.call(xAxis) | |
| // update the location of y_title | |
| y_title.attr("transform","translate("+ | |
| (parseFloat(y_svg[0][0].getBBox().x)-10)+" " | |
| +h/2+") rotate(-90)") | |
| //update the viewBox to capture the svg bbox | |
| bbox = svg[0][0].getBBox() | |
| svg.attr("viewBox",bbox.x+" "+bbox.y+" "+bbox.width+" "+bbox.height) | |
| } | |
| changeDomain(); | |
| setInterval(changeDomain,1000); | |
| </script> | |
| </body> |
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