Created
July 22, 2011 20:50
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zoom-pan-log
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| zoom-pan-log |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html;charset=utf-8"> | |
| <title>Zoom + Pan</title> | |
| <script type="text/javascript" src="http://mbostock.github.com/d3/d3.js"></script> | |
| <script type="text/javascript" src="http://mbostock.github.com/d3/d3.behavior.js"></script> | |
| <style type="text/css"> | |
| svg { | |
| font: 10px sans-serif; | |
| shape-rendering: crispEdges; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script type="text/javascript"> | |
| var size = [710, 300], // width height | |
| padding = [4, 4, 20, 50], // top right bottom left | |
| tx = function(d) { return "translate(" + x(d) + ",0)"; }, | |
| ty = function(d) { return "translate(0," + y(d) + ")"; }, | |
| stroke = function(d) { return d ? "#ccc" : "#666"; }; | |
| // x-scale (1.42 = 710/500) | |
| var x = d3.scale.log() | |
| .domain([0.1, +1.42]) | |
| .range([0, size[0]]); | |
| // y-scale (inverted domain) | |
| var y = d3.scale.log() | |
| .domain([+1.00, 0.1]) | |
| .range([0, size[1]]); | |
| var svg = d3.select("body") | |
| .append("svg:svg") | |
| .attr("width", size[0] + padding[3] + padding[1]) | |
| .attr("height", size[1] + padding[0] + padding[2]) | |
| .attr("pointer-events", "all") | |
| .call(d3.behavior.zoom() | |
| .on("zoom", redraw)) | |
| .append("svg:g") | |
| .attr("transform", "translate(" + padding[3] + "," + padding[0] + ")"); | |
| svg.append("svg:rect") | |
| .attr("width", size[0]) | |
| .attr("height", size[1]) | |
| .attr("stroke", stroke) | |
| .attr("fill", "none"); | |
| redraw(); | |
| function redraw() { | |
| if (d3.event) d3.event.transform(x, y); | |
| var fx = x.tickFormat(10), | |
| fy = y.tickFormat(10); | |
| // Regenerate x-ticks… | |
| var gx = svg.selectAll("g.x") | |
| .data(x.ticks(10), String) | |
| .attr("transform", tx); | |
| gx.select("text") | |
| .text(fx); | |
| var gxe = gx.enter().insert("svg:g", "rect") | |
| .attr("class", "x") | |
| .attr("transform", tx); | |
| gxe.append("svg:line") | |
| .attr("stroke", stroke) | |
| .attr("y1", 0) | |
| .attr("y2", size[1]); | |
| gxe.append("svg:text") | |
| .attr("y", size[1]) | |
| .attr("dy", "1em") | |
| .attr("text-anchor", "middle") | |
| .text(fx); | |
| gx.exit().remove(); | |
| // Regenerate y-ticks… | |
| var gy = svg.selectAll("g.y") | |
| .data(y.ticks(10), String) | |
| .attr("transform", ty); | |
| gy.select("text") | |
| .text(fy); | |
| var gye = gy.enter().insert("svg:g", "rect") | |
| .attr("class", "y") | |
| .attr("transform", ty); | |
| gye.append("svg:line") | |
| .attr("stroke", stroke) | |
| .attr("x1", 0) | |
| .attr("x2", size[0]); | |
| gye.append("svg:text") | |
| .attr("x", -3) | |
| .attr("dy", ".35em") | |
| .attr("text-anchor", "end") | |
| .text(fy); | |
| gy.exit().remove(); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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