Created
November 4, 2011 17:51
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D3 tooltip using SVG title element
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script type="text/javascript" src="http://mbostock.github.com/d3/d3.js"></script> | |
| </head> | |
| <body> | |
| <div id="chart"></div> | |
| <script type="text/javascript"> | |
| var w = 800, h = 500; | |
| var colors = d3.scale.category20(); | |
| var vis = d3.select("#chart").append("svg:svg") | |
| .attr("width", w) | |
| .attr("height", h); | |
| var data = d3.range(20).map(function() { return { x:Math.random()*w, y:Math.random()*h, r:Math.random()*30 } }); | |
| vis.selectAll("circle") | |
| .data(data) | |
| .enter().append("svg:circle") | |
| .attr("stroke", "black") | |
| .attr("fill", function(d, i) { return colors(i); }) | |
| .attr("cx", function(d, i) { return d.x; }) | |
| .attr("cy", function(d, i) { return d.y; }) | |
| .attr("r", function(d, i) { return d.r; }) | |
| // Here we add an SVG title element the contents of which is effectively rendered in a tooltip | |
| .append("svg:title") | |
| .text(function(d, i) { return "My color is " + colors(i); }); | |
| </script> | |
| </body> | |
| </html> | |
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It seems that it depends on the browser, check out this discussion. So instead of relying on the browsers' interpretation of svg:title it's better to use tooltips drawn manually, like for instance the one in the jQuery tipsy example.