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function makeLineChart(dataset, xName, yNames) { |
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/* |
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* dataset = the csv file |
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* xName = the name of the column to use as the x axes |
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* yNames = the columns to use for y values |
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* |
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* */ |
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var chart = {}; |
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chart.data = dataset; |
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chart.xName = xName; |
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chart.yNames = yNames; |
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chart.groupObjs = {}; //The data organized by grouping and sorted as well as any metadata for the groups |
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chart.objs = {mainDiv: null, chartDiv: null, g: null, xAxis: null, yAxis: null, tooltip:null, legend:null, text_box:null}; |
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var colorFunct = d3.scale.category10(); |
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function updateColorFunction(colorOptions) { |
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/* |
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* Takes either a list of colors, a function or an object with the mapping already in place |
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* */ |
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if (typeof colorOptions == 'function') { |
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return colorOptions |
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} else if (Array.isArray(colorOptions)) { |
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// If an array is provided, map it to the domain |
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var colorMap = {}, cColor = 0; |
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for (var cName in chart.groupObjs) { |
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colorMap[cName] = colorOptions[cColor]; |
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cColor = (cColor + 1) % colorOptions.length; |
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} |
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return function (group) { |
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return colorMap[group]; |
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} |
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} else if (typeof colorOptions == 'object') { |
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// if an object is provided, assume it maps to the colors |
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return function (group) { |
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return colorOptions[group]; |
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} |
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} |
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} |
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//Formatter functions for the axes |
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chart.formatAsNumber = d3.format(".0f"); |
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chart.formatAsDecimal = d3.format(".2f"); |
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chart.formatAsCurrency = d3.format("$.2f"); |
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chart.formatAsFloat = function(d) {if(d%1!==0){return d3.format(".2f")(d);}else{return d3.format(".2f")(d);}}; |
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chart.formatAsYear = d3.format(""); |
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chart.xFormatter = chart.formatAsNumber; |
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chart.yFormatter = chart.formatAsFloat; |
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function getYFuncts() { |
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// Return a list of all *visible* y functions |
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var yFuncts = []; |
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for (var yName in chart.groupObjs) { |
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currentGroup = chart.groupObjs[yName]; |
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if (currentGroup.visible == true) { |
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yFuncts.push(currentGroup.p10Funct); |
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} |
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} |
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return yFuncts |
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} |
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function getYMax () { |
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// Get the max y value of all *visible* y lines |
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return d3.max(getYFuncts().map(function(fn){ |
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return d3.max(chart.data, fn); |
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})) |
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} |
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function prepareData() { |
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chart.fc_base_time = new Date(); |
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chart.fc_time = function(h) { |
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var fc_time = new Date(); |
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fc_time.setTime(chart.fc_base_time.getTime() + (h*60*60*1000)); |
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return fc_time; |
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} |
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chart.xFunct = function(d){return d[xName]}; |
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chart.bisectYear = d3.bisector(chart.xFunct).left; |
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var yName, cY; |
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for (yName in chart.yNames) { |
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chart.groupObjs[yName] = {yFunct:null, p90Funct:null, p10Funct:null, visible:null, objs:{}}; |
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} |
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// For each yName argument, create a yFunction |
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function getYFn(column) { |
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return function (d) { |
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return d[column]; |
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}; |
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} |
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// Object instead of array |
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chart.yFuncts = []; |
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for (yName in chart.yNames) { |
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cY = chart.groupObjs[yName]; |
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cY.visible = true; |
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cY.yFunct = getYFn(chart.yNames[yName].best_guess); |
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cY.p90Funct = getYFn(chart.yNames[yName].p90); |
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cY.p10Funct = getYFn(chart.yNames[yName].p10); |
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} |
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} |
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prepareData(); |
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chart.update = function () { |
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chart.width = parseInt(chart.objs.chartDiv.style("width"), 10) - (chart.margin.left + chart.margin.right); |
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chart.height = parseInt(chart.objs.chartDiv.style("height"), 10) - (chart.margin.top + chart.margin.bottom); |
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/* Update the range of the scale with new width/height */ |
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chart.xScale.range([0, chart.width]); |
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chart.yScale.range([chart.height, 0]).domain([0, getYMax()]); |
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if (!chart.objs.g) {return false;} |
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/* Else Update the axis with the new scale */ |
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chart.objs.axes.g.select('.x.axis').attr("transform", "translate(0," + chart.height + ")").call(chart.objs.xAxis); |
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chart.objs.axes.g.select('.x.axis .label').attr("x", chart.width / 2); |
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chart.objs.axes.g.select('.y.axis').call(chart.objs.yAxis); |
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chart.objs.axes.g.select('.y.axis .label').attr("x", -chart.height / 2); |
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/* Force D3 to recalculate and update the line */ |
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for (var yName in chart.groupObjs) { |
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cY = chart.groupObjs[yName]; |
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if (cY.visible==true) { |
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cY.objs.line.g.attr("d", cY.objs.line.series).style("display",null); |
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cY.objs.area.g.attr("d", cY.objs.area.series).style("display",null); |
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cY.objs.tooltip.style("display",null);} |
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else { |
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cY.objs.line.g.style("display","none"); |
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cY.objs.area.g.style("display","none"); |
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cY.objs.tooltip.style("display","none"); |
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} |
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} |
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chart.objs.tooltip.select('.line').attr("y2", chart.height); |
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chart.objs.chartDiv.select('svg').attr("width", chart.width + (chart.margin.left + chart.margin.right)).attr("height", chart.height + (chart.margin.top + chart.margin.bottom)); |
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chart.objs.g.select(".overlay").attr("width", chart.width).attr("height", chart.height); |
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return chart; |
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}; |
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chart.bind = function (bindOptions) { |
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function getOptions() { |
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if (!bindOptions) throw "Missing Bind Options"; |
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if (bindOptions.selector) { |
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chart.objs.mainDiv = d3.select(bindOptions.selector); |
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// Capture the inner div for the chart (where the chart actually is) |
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chart.selector = bindOptions.selector + " .inner-box"; |
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} else {throw "No Selector Provided"} |
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if (bindOptions.margin) { |
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chart.margin = margin; |
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} else { |
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chart.margin = {top: 15, right: 60, bottom: 50, left: 60}; |
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} |
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if (bindOptions.chartSize) { |
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chart.divWidth = bindOptions.chartSize.width; |
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chart.divHeight = bindOptions.chartSize.height; |
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} else { |
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chart.divWidth = 800; |
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chart.divHeight = 400; |
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} |
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chart.width = chart.divWidth - chart.margin.left - chart.margin.right; |
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chart.height = chart.divHeight - chart.margin.top - chart.margin.bottom; |
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if (bindOptions.axisLabels) { |
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chart.xAxisLable = bindOptions.axisLabels.xAxis; |
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chart.yAxisLable = bindOptions.axisLabels.yAxis; |
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} else { |
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chart.xAxisLable = chart.xName; |
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chart.yAxisLable = chart.yNames[0]; |
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} |
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if (bindOptions.colors) { |
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colorFunct = updateColorFunction(bindOptions.colors); |
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} |
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} |
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getOptions(); |
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chart.xScale = d3.scale.linear().range([0, chart.width]).domain(d3.extent(chart.data, chart.xFunct)); |
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chart.yScale = d3.scale.linear().range([chart.height, 0]).domain([0, getYMax()]); |
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//Create axis |
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chart.objs.xAxis = d3.svg.axis() |
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.scale(chart.xScale) |
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.orient("bottom") |
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.tickFormat(chart.xFormatter) |
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.tickSize(6) |
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.ticks(20); // number of tick labels |
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//.attr("font-size", "10px"); |
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//."font-family"."("Verdana"); |
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chart.objs.yAxis = d3.svg.axis() |
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.scale(chart.yScale) |
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.orient("left") |
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.tickFormat(chart.yFormatter); |
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// Build line building functions |
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function getYScaleFn(yName) { |
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return function (d) { |
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return chart.yScale(chart.groupObjs[yName].yFunct(d)); |
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}; |
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} |
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function getYScaleFn_p10(yName) { |
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return function (d) { |
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return chart.yScale(chart.groupObjs[yName].p10Funct(d)); |
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}; |
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} |
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function getYScaleFn_p90(yName) { |
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return function (d) { |
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return chart.yScale(chart.groupObjs[yName].p90Funct(d)); |
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}; |
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} |
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// Create lines (as series) |
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for (var yName in yNames) { |
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var cY = chart.groupObjs[yName]; |
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cY.objs.line = {g:null, series:null}; |
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cY.objs.area = {g:null, series:null}; |
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cY.objs.line.series = d3.svg.line() |
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.interpolate("linear") |
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.x(function (d) {return chart.xScale(chart.xFunct(d));}) |
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.y(getYScaleFn(yName)); |
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cY.objs.area.series = d3.svg.area() |
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.x(function (d) {return chart.xScale(chart.xFunct(d));}) |
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.y0(getYScaleFn_p10(yName)) |
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.y1(getYScaleFn_p90(yName)); |
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} |
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chart.objs.mainDiv.style("max-width", chart.divWidth + "px"); |
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// Add all the divs to make it centered and responsive |
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chart.objs.mainDiv.append("div") |
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.attr("class", "inner-wrapper") |
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.style("padding-bottom", (chart.divHeight / chart.divWidth) * 100 + "%") |
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.append("div").attr("class", "outer-box") |
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.append("div").attr("class", "inner-box"); |
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chart.objs.chartDiv = d3.select(chart.selector); |
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d3.select(window).on('resize.' + chart.selector, chart.update); |
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// Create the svg |
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chart.objs.g = chart.objs.chartDiv.append("svg") |
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.attr("class", "chart-area") |
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.attr("width", chart.width + (chart.margin.left + chart.margin.right)) |
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.attr("height", chart.height + (chart.margin.top + chart.margin.bottom)) |
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.append("g") |
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.attr("transform", "translate(" + chart.margin.left + "," + chart.margin.top + ")"); |
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chart.objs.axes = {}; |
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chart.objs.axes.g = chart.objs.g.append("g").attr("class", "axis"); |
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// Show axis |
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chart.objs.axes.x = chart.objs.axes.g.append("g") |
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.attr("class", "x axis") |
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.attr("transform", "translate(0," + chart.height + ")") |
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.call(chart.objs.xAxis) |
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.append("text") |
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.attr("class", "label") |
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.attr("x", chart.width / 2) |
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.attr("y", 40) |
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.style("text-anchor", "middle") |
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.style("font-size","15px") |
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.style("font-family","Verdana") |
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.text(chart.xAxisLable); |
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chart.objs.axes.y = chart.objs.axes.g.append("g") |
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.attr("class", "y axis") |
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.call(chart.objs.yAxis) |
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.append("text") |
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.attr("class", "label") |
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.attr("transform", "rotate(-90)") |
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.attr("y", -50) |
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.attr("x", -chart.height / 2) |
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.attr("dy", ".71em") |
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.style("text-anchor", "middle") |
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.style("font-size","15px") |
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.style("font-family","Verdana") |
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.text(chart.yAxisLable); |
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return chart; |
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}; |
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chart.render = function () { |
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|
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var yName, |
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cY=null; |
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chart.objs.legend = chart.objs.mainDiv.append('div').attr("class", "legend"); |
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|
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// //chart.objs.mainDiv.append('div').attr("class","text") |
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// chart.objs.legend.append("class","text") |
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// //.attr("x", 30) |
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// //.attr("y", 470) |
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// .attr("text-anchor", "middle") |
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// .style("font-size", "15px") |
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// .style("font-family", "Verdana") |
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// //.style("text-decoration", "underline") |
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// .text(" \u00A9 Forecast base time: " + (chart.fc_base_time |
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// .toISOString() |
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// .slice(0, 19) |
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// .replace("T", " ") |
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// .replace("-", "/") |
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// .replace("-", "/")) |
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// + " AEST ") |
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function toggleSeries(yName) { |
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cY = chart.groupObjs[yName]; |
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cY.visible = !cY.visible; |
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if (cY.visible==false) {cY.objs.legend.div.style("opacity","0.3")} else {cY.objs.legend.div.style("opacity","1")} |
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chart.update() |
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} |
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function getToggleFn(series) { |
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return function () { |
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return toggleSeries(series); |
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}; |
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} |
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for (yName in chart.groupObjs) { |
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cY = chart.groupObjs[yName]; |
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cY.objs.g = chart.objs.g.append("g"); |
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cY.objs.line.g = cY.objs.g.append("path") |
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.datum(chart.data) |
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.attr("class", "line") |
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.attr("d", cY.objs.line.series) |
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.style("stroke", colorFunct(yName)) |
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.attr("data-series", yName) |
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.on("mouseover", function () { |
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tooltip.style("display", null); |
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}).on("mouseout", function () { |
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tooltip.transition().delay(700).style("display", "none"); |
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}).on("mousemove", mouseHover); |
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|
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cY.objs.area.g = cY.objs.g.append("path") |
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.datum(chart.data) |
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.attr("class", "area") |
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.attr("d", cY.objs.area.series) |
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.attr("fill",colorFunct(yName)) |
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.attr("fill-opacity","0.4") |
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//.style("stroke", colorFunct(yName)) |
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// .attr("data-series", yName) |
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|
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cY.objs.legend = {}; |
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cY.objs.legend.div = chart.objs.legend.append('div').on("click",getToggleFn(yName)); |
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cY.objs.legend.icon = cY.objs.legend.div.append('div') |
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.attr("class", "series-marker") |
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.style("background-color", colorFunct(yName)); |
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cY.objs.legend.text = cY.objs.legend.div.append('p').text(yName); |
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|
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} |
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|
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//chart.objs.mainDiv.append('div').attr("class","text") |
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chart.objs.legend.append("class","text") |
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//.attr("x", 30) |
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//.attr("y", 470) |
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.attr("text-anchor", "middle") |
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.style("font-size", "15px") |
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.style("font-family", "Verdana") |
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//.style("text-decoration", "underline") |
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.text(" Forecast base time: " + (chart.fc_base_time |
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.toISOString() |
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.slice(0, 19) |
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.replace("T", " ") |
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.replace("-", "/") |
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.replace("-", "/")) |
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+ " AEST \u00A9 Proa Analytics") |
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chart.objs.legend.append("class","text") |
|
//.attr("x", 30) |
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//.attr("y", 470) |
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.attr("text-anchor", "middle") |
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.style("font-size", "15px") |
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.style("font-family", "Verdana") |
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//.style("text-decoration", "underline") |
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.text(" ") |
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|
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|
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//Draw tooltips |
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//Themust be a better way so we don't need a second loop. Issue is draw order so tool tips are on top |
|
chart.objs.tooltip = chart.objs.g.append("g").attr("class", "tooltip").style("display", "none"); |
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// Year label |
|
chart.objs.tooltip.append("text").attr("class", "year").attr("x", 9).attr("y", 7); |
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// Focus line |
|
chart.objs.tooltip.append("line").attr("class", "line").attr("y1", 0).attr("y2", chart.height); |
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|
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for (yName in chart.groupObjs) { |
|
cY = chart.groupObjs[yName]; |
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//Add tooltip elements |
|
var tooltip = chart.objs.tooltip.append("g"); |
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cY.objs.circle = tooltip.append("circle").attr("r", 3); |
|
cY.objs.rect = tooltip.append("rect").attr("x", 8).attr("y","-5").attr("width",22).attr("height",'0.75em'); |
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cY.objs.text = tooltip.append("text").attr("x", 9).attr("dy", ".35em").attr("class","value"); |
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cY.objs.tooltip = tooltip; |
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} |
|
|
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// Overlay to capture hover |
|
chart.objs.g.append("rect") |
|
.attr("class", "overlay") |
|
.attr("width", chart.width) |
|
.attr("height", chart.height) |
|
.on("mouseover", function () { |
|
chart.objs.tooltip.style("display", null); |
|
}).on("mouseout", function () { |
|
chart.objs.tooltip.style("display", "none"); |
|
}).on("mousemove", mouseHover); |
|
|
|
return chart; |
|
|
|
function mouseHover() { |
|
var x0 = chart.xScale.invert(d3.mouse(this)[0]), i = chart.bisectYear(dataset, x0, 1), d0 = chart.data[i - 1], d1 = chart.data[i]; |
|
try { |
|
var d = x0 - chart.xFunct(d0) > chart.xFunct(d1) - x0 ? d1 : d0; |
|
} catch (e) { return;} |
|
var minY = chart.height; |
|
var yName, cY; |
|
for (yName in chart.groupObjs) { |
|
cY = chart.groupObjs[yName]; |
|
if (cY.visible==false) {continue} |
|
//Move the tooltip |
|
cY.objs.tooltip.attr("transform", "translate(" + chart.xScale(chart.xFunct(d)) + "," + chart.yScale(cY.yFunct(d)) + ")"); |
|
//Change the text |
|
cY.objs.tooltip.select("text").text(chart.yFormatter(cY.yFunct(d))); |
|
minY = Math.min(minY, chart.yScale(cY.yFunct(d))); |
|
} |
|
|
|
chart.objs.tooltip.select(".tooltip .line").attr("transform", "translate(" + chart.xScale(chart.xFunct(d)) + ")").attr("y1", minY); |
|
chart.objs.tooltip.select(".tooltip .year") |
|
.text("Forecast time: " |
|
+ chart.fc_time(chart.xFunct(d)) |
|
.toISOString() |
|
.slice(0, 19) |
|
.replace("T", " ") |
|
.replace("-", "/") |
|
.replace("-", "/") |
|
+ " AEST " ).style("font-size", "10px") |
|
.style("font-family", "Verdana"); |
|
} |
|
|
|
}; |
|
|
|
|
|
return chart; |
|
} |
