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d3.js matrix visualization
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <script src="http://d3js.org/d3.v2.min.js?2.8.1"></script> | |
| <body> | |
| <script> | |
| var margin = {top: 100, right: 100, bottom: 100, left: 100}, | |
| width = 384, | |
| height = 256; | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height + margin.top + margin.bottom) | |
| .style("margin-left", -margin.left + "px") | |
| .append("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| svg.append("rect") | |
| .attr("class", "background") | |
| .attr("width", width) | |
| .attr("height", height); | |
| var numrows = 15; | |
| var numcols = 10; | |
| var matrix = new Array(numrows); | |
| for (var i = 0; i < numrows; i++) { | |
| matrix[i] = new Array(numcols); | |
| for (var j = 0; j < numcols; j++) { | |
| matrix[i][j] = Math.random()*2 - 1; | |
| } | |
| } | |
| var x = d3.scale.ordinal() | |
| .domain(d3.range(numcols)) | |
| .rangeBands([0, width]); | |
| var y = d3.scale.ordinal() | |
| .domain(d3.range(numrows)) | |
| .rangeBands([0, height]); | |
| var rowLabels = new Array(numrows); | |
| for (var i = 0; i < numrows; i++) { | |
| rowLabels[i] = "Row "+(i+1); | |
| } | |
| var columnLabels = new Array(numrows); | |
| for (var i = 0; i < numcols; i++) { | |
| columnLabels[i] = "Column "+(i+1); | |
| } | |
| var colorMap = d3.scale.linear() | |
| .domain([-1, 0, 1]) | |
| .range(["red", "white", "blue"]); | |
| //.range(["red", "black", "green"]); | |
| //.range(["brown", "#ddd", "darkgreen"]); | |
| var row = svg.selectAll(".row") | |
| .data(matrix) | |
| .enter().append("g") | |
| .attr("class", "row") | |
| .attr("transform", function(d, i) { return "translate(0," + y(i) + ")"; }); | |
| row.selectAll(".cell") | |
| .data(function(d) { return d; }) | |
| .enter().append("rect") | |
| .attr("class", "cell") | |
| .attr("x", function(d, i) { return x(i); }) | |
| .attr("width", x.rangeBand()) | |
| .attr("height", y.rangeBand()) | |
| .style("stroke-width", 0); | |
| row.append("line") | |
| .attr("x2", width); | |
| row.append("text") | |
| .attr("x", 0) | |
| .attr("y", y.rangeBand() / 2) | |
| .attr("dy", ".32em") | |
| .attr("text-anchor", "end") | |
| .text(function(d, i) { return i; }); | |
| var column = svg.selectAll(".column") | |
| .data(columnLabels) | |
| .enter().append("g") | |
| .attr("class", "column") | |
| .attr("transform", function(d, i) { return "translate(" + x(i) + ")rotate(-90)"; }); | |
| column.append("line") | |
| .attr("x1", -width); | |
| column.append("text") | |
| .attr("x", 6) | |
| .attr("y", y.rangeBand() / 2) | |
| .attr("dy", ".32em") | |
| .attr("text-anchor", "start") | |
| .text(function(d, i) { return d; }); | |
| row.selectAll(".cell") | |
| .data(function(d, i) { return matrix[i]; }) | |
| .style("fill", colorMap); | |
| </script> |
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