// Taken from: http://bl.ocks.org/jensgrubert/7789216 // Altered to work with D3 v4 (function() { // Inspired by http://informationandvisualization.de/blog/box-plot d3.box = function() { var width = 1, height = 1, duration = 0, domain = null, value = Number, whiskers = boxWhiskers, quartiles = boxQuartiles, showLabels = true, // whether or not to show text labels showOutliers = true, maxVal = -Infinity, minVal = Infinity, numBars = 4, curBar = 1, tickFormat = null; // For each small multiple… function box(g) { //console.log(domain); g.each(function(data, i) { var d = data.d = data[1].sort(d3.ascending); var n = d.length; var min = d[0]; var max = d[n - 1]; // Compute quartiles. Must return exactly 3 elements. var quartileData = data.quartileData = d.quartiles = quartiles(d); // Compute whiskers. Must return exactly 2 elements, or null. var whiskerIndices = whiskers && whiskers.call(this, d, i); var whiskerData = data.whiskerData = whiskerIndices && whiskerIndices.map(function(i) { return d[i]; }); // Compute outliers. If no whiskers are specified, all data are "outliers". // We compute the outliers as indices, so that we can join across transitions! var outlierIndices = whiskerIndices ? d3.range(0, whiskerIndices[0]).concat(d3.range(whiskerIndices[1] + 1, n)) : d3.range(n); if (showOutliers == false) { max = d3.max(d, function(d, i) { return $.inArray(i, outlierIndices)!=-1? -Infinity : d; }); min = d3.min(d, function(d, i) { return $.inArray(i, outlierIndices)!=-1? Infinity : d; }); outlierIndices = []; } data.outlierIndices = outlierIndices; maxVal = Math.max(maxVal, max); minVal = Math.min(minVal, min); }); g.each(function(data, i) { var d = data.d; var g = d3.select(this); // Compute the new x-scale. var x1 = d3.scaleLinear() .domain(domain && domain.call(this, d, i) || [minVal, maxVal]) .range([height, 0]); // Retrieve the old x-scale, if this is an update. var x0 = this.__chart__ || d3.scaleLinear() .domain([0, Infinity]) // .domain([0, max]) .range(x1.range()); // Stash the new scale. this.__chart__ = x1; // Note: the box, median, and box tick elements are fixed in number, // so we only have to handle enter and update. In contrast, the outliers // and other elements are variable, so we need to exit them! Variable // elements also fade in and out. // Update center line: the vertical line spanning the whiskers. var center = g.selectAll("line.center") .data(data.whiskerData ? [data.whiskerData] : []); //vertical line center.enter().insert("line", "rect") .attr("class", "center") .attr("x1", width / 2) .attr("y1", function(d) { return x0(d[0]); }) .attr("x2", width / 2) .attr("y2", function(d) { return x0(d[1]); }) .style("opacity", 1e-6) .transition() .duration(duration) .style("opacity", 1) .attr("y1", function(d) { return x1(d[0]); }) .attr("y2", function(d) { return x1(d[1]); }); center.transition() .duration(duration) .style("opacity", 1) .attr("y1", function(d) { return x1(d[0]); }) .attr("y2", function(d) { return x1(d[1]); }); center.exit().transition() .duration(duration) .style("opacity", 1e-6) .attr("y1", function(d) { return x1(d[0]); }) .attr("y2", function(d) { return x1(d[1]); }) .remove(); // Update innerquartile box. var box = g.selectAll("rect.box") .data([data.quartileData]); box.enter().append("rect") .attr("class", "box") .attr("x", 0) .attr("y", function(d) { return x0(d[2]); }) .attr("width", width) .attr("height", function(d) { return x0(d[0]) - x0(d[2]); }) .transition() .duration(duration) .attr("y", function(d) { return x1(d[2]); }) .attr("height", function(d) { return x1(d[0]) - x1(d[2]); }); box.transition() .duration(duration) .attr("y", function(d) { return x1(d[2]); }) .attr("height", function(d) { return x1(d[0]) - x1(d[2]); }); // Update median line. var medianLine = g.selectAll("line.median") .data([data.quartileData[1]]); medianLine.enter().append("line") .attr("class", "median") .attr("x1", 0) .attr("y1", x0) .attr("x2", width) .attr("y2", x0) .transition() .duration(duration) .attr("y1", x1) .attr("y2", x1); medianLine.transition() .duration(duration) .attr("y1", x1) .attr("y2", x1); // Update whiskers. var whisker = g.selectAll("line.whisker") .data(data.whiskerData || []); whisker.enter().insert("line", "circle, text") .attr("class", "whisker") .attr("x1", 0 + 0.25*width) .attr("y1", x0) .attr("x2", 0 + 0.75*width) .attr("y2", x0) .style("opacity", 1e-6) .transition() .duration(duration) .attr("y1", x1) .attr("y2", x1) .style("opacity", 1); whisker.transition() .duration(duration) .attr("y1", x1) .attr("y2", x1) .style("opacity", 1); whisker.exit().transition() .duration(duration) .attr("y1", x1) .attr("y2", x1) .style("opacity", 1e-6) .remove(); // Update outliers. var outlier = g.selectAll("circle.outlier") .data(data.outlierIndices, Number); outlier.enter().insert("circle", "text") .attr("class", "outlier") .attr("r", 2) .attr("cx", width / 2) .attr("cy", function(i) { return x0(d[i]); }) .style("opacity", 1e-6) .transition() .duration(duration) .attr("cy", function(i) { return x1(d[i]); }) .style("opacity", 1); outlier.transition() .duration(duration) .attr("cy", function(i) { return x1(d[i]); }) .style("opacity", 1); outlier.exit().transition() .duration(duration) .attr("cy", function(i) { return x1(d[i]); }) .style("opacity", 1e-6) .remove(); // Compute the tick format. var format = tickFormat || x1.tickFormat(8); // Update box ticks. var boxTick = g.selectAll("text.box") .data(data.quartileData); if(showLabels == true) { boxTick.enter().append("text") .attr("class", "box") .attr("dy", ".3em") .attr("dx", function(d, i) { return i & 1 ? 6 : -6; }) .attr("x", function(d, i) { return i & 1 ? + width : 0; }) .attr("y", x0) .attr("text-anchor", function(d, i) { return i & 1 ? "start" : "end"; }) .text(format) .transition() .duration(duration) .attr("y", x1); } boxTick.transition() .duration(duration) .text(format) .attr("y", x1); // Update whisker ticks. These are handled separately from the box // ticks because they may or may not exist, and we want don't want // to join box ticks pre-transition with whisker ticks post-. var whiskerTick = g.selectAll("text.whisker") .data(data.whiskerData || []); if(showLabels == true) { whiskerTick.enter().append("text") .attr("class", "whisker") .attr("dy", ".3em") .attr("dx", 6) .attr("x", width) .attr("y", x0) .text(format) .style("opacity", 1e-6) .transition() .duration(duration) .attr("y", x1) .style("opacity", 1); } whiskerTick.transition() .duration(duration) .text(format) .attr("y", x1) .style("opacity", 1); whiskerTick.exit().transition() .duration(duration) .attr("y", x1) .style("opacity", 1e-6) .remove(); }); d3.timerFlush(); } box.width = function(x) { if (!arguments.length) return width; width = x; return box; }; box.maxVal = function(x) { if (!arguments.length) return maxVal; maxVal = x; return box; }; box.minVal = function(x) { if (!arguments.length) return minVal; minVal = x; return box; }; box.height = function(x) { if (!arguments.length) return height; height = x; return box; }; box.tickFormat = function(x) { if (!arguments.length) return tickFormat; tickFormat = x; return box; }; box.duration = function(x) { if (!arguments.length) return duration; duration = x; return box; }; box.domain = function(x) { if (!arguments.length) return domain; function constant(x) { return function() { return x; }; } domain = x == null ? x : constant(x); return box; }; box.value = function(x) { if (!arguments.length) return value; value = x; return box; }; box.whiskers = function(x) { if (!arguments.length) return whiskers; whiskers = x; return box; }; box.showLabels = function(x) { if (!arguments.length) return showLabels; showLabels = x; return box; }; box.showOutliers = function(x) { if (!arguments.length) return showOutliers; showOutliers = x; return box; }; box.quartiles = function(x) { if (!arguments.length) return quartiles; quartiles = x; return box; }; return box; }; function boxWhiskers(d) { return [0, d.length - 1]; } function boxQuartiles(d) { return [ d3.quantile(d, .25), d3.quantile(d, .5), d3.quantile(d, .75) ]; } })();