Grouped Bar Chart with Line using d3.js

Forked Grouped Bar Chart with Line to answer SO question Add data points and text to lines on a multi-bar graph with lines

forked from nanu146's block: Grouped Bar Chart with Line using d3.js

<!DOCTYPE html>
<meta charset="utf-8">
<style>
    body {
        font: 10px sans-serif;
    }

.axis path,
    .axis line { 
        fill: none;
        stroke: #000;
        shape-rendering: crispEdges;
    }

.bar {
        fill: steelblue;
    }

.x.axis path {
        display: none;
    }
</style>
<body>
    <script src="//d3js.org/d3.v3.min.js"></script>
    <script>
        function getTextWidth(text, fontSize, fontName) {
            c = document.createElement("canvas");
            ctx = c.getContext("2d");
            ctx.font = fontSize + ' ' + fontName;
            return ctx.measureText(text).width;
        }

SegData = OrdinalPositionHolder.keys().map(function () {
                return [];
            });

array.forEach(function (d) {
                d.forEach(function (b) {
                    SegData[OrdinalPositionHolder[b[on]]].push(b);
                })
            });

return SegData;
        }

Data = [
{ Date: "2016-06-14", Categories: [{ Name: "Category1", Value: 368 }, { Name: "Category2", Value: 321 }, { Name: "Category3", Value: 524 }], LineCategory: [{ Name: "Line1", Value: 69 }, { Name: "Line2", Value: 63 }] },
{ Date: "2016-06-15", Categories: [{ Name: "Category1", Value: 521 }, { Name: "Category2", Value: 123 }, { Name: "Category3", Value: 653 }], LineCategory: [{ Name: "Line1", Value: 89 }, { Name: "Line2", Value: 96 }] },
{ Date: "2016-06-17", Categories: [{ Name: "Category1", Value: 368 }, { Name: "Category2", Value: 236 }, { Name: "Category3", Value: 537 }], LineCategory: [{ Name: "Line1", Value: 63 }, { Name: "Line2", Value: 35 }] },
{ Date: "2016-06-18", Categories: [{ Name: "Category1", Value: 423 }, { Name: "Category2", Value: 330 }, { Name: "Category3", Value: 689 }], LineCategory: [{ Name: "Line1", Value: 86 }, { Name: "Line2", Value: 45 }] },
{ Date: "2016-06-19", Categories: [{ Name: "Category1", Value: 601 }, { Name: "Category2", Value: 423 }, { Name: "Category3", Value: 490 }], LineCategory: [{ Name: "Line1", Value: 65 }, { Name: "Line2", Value: 63 }] },
{ Date: "2016-06-20", Categories: [{ Name: "Category1", Value: 412 }, { Name: "Category2", Value: 461 }, { Name: "Category3", Value: 321 }], LineCategory: [{ Name: "Line1", Value: 75 }, { Name: "Line2", Value: 85 }] }
        ]

var margin = { top: 20, right: 30, bottom: 60, left: 40 },
            width = 960 - margin.left - margin.right,
            height = 500 - margin.top - margin.bottom;

var textWidthHolder = 0;
        /// Adding Date in LineCategory
        Data.forEach(function (d) {
            d.LineCategory.forEach(function (b) {
                b.Date = d.Date;
            })
        });

var Categories = new Array();
        // Extension method declaration

Categories.pro

var Data;
        var ageNames;
        var x0 = d3.scale.ordinal()
            .rangeRoundBands([0, width], .1);
        var XLine = d3.scale.ordinal()
            .rangeRoundPoints([0, width], .1);
        var x1 = d3.scale.ordinal();

var y = d3.scale.linear()
            .range([height, 0]);

var YLine = d3.scale.linear().range([height, 0])
        .domain([0, d3.max(Data, function (d) { return d3.max(d.LineCategory, function (b) { return b.Value }) })]);

var color = d3.scale.ordinal()
            .range(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"]);

var line = d3.svg.line().x(function (d) {
            return x0(d.Date) + x0.rangeBand() / 2;
        }).y(function (d) { return YLine(d.Value) });

var xAxis = d3.svg.axis()
            .scale(x0)
            .orient("bottom");

var yAxis = d3.svg.axis()
            .scale(y)
            .orient("left")
            .tickFormat(d3.format(".2s"));

var YLeftAxis = d3.svg.axis().scale(YLine).orient("right").tickFormat(d3.format(".2s"));

var svg = d3.select("body").append("svg")
            .attr("width", width + margin.left + margin.right)
            .attr("height", height + margin.top + margin.bottom)
          .append("g")
            .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

// Bar Data categories
        Data.forEach(function (d) {
            d.Categories.forEach(function (b) {
                if (Categories.findIndex(function (c) { return c.Name===b.Name}) == -1) {
                    b.Type = "bar";
                    Categories.push(b)
                }
            })
        });

// Line Data categories
        Data.forEach(function (d) {
            d.LineCategory.forEach(function (b) {
                if (Categories.findIndex(function (c) { return c.Name === b.Name }) == -1) {
                    b.Type = "line";
                    Categories.push(b)
                }
            })
        });

// Processing Line data
        lineData = DataSegregator(Data.map(function (d) { return d.LineCategory }), "Name");

// Line Coloring
        LineColor = d3.scale.ordinal();
        LineColor.domain(Categories.filter(function (d) { return d.Type == "line" }).map(function (d) { return d.Name }));
        LineColor.range(["#d40606", "#06bf00", "#98bdc5", "#671919", "#0b172b"])
        x0.domain(Data.map(function (d) { return d.Date; }));
        XLine.domain(Data.map(function (d) { return d.Date; }));
        x1.domain(Categories.filter(function (d) { return d.Type == "bar" }).map(function (d) { return d.Name})).rangeRoundBands([0, x0.rangeBand()]);
        y.domain([0, d3.max(Data, function (d) { return d3.max(d.Categories, function (d) { return d.Value; }); })]);

svg.append("g")
            .attr("class", "x axis")
            .attr("transform", "translate(0," + height + ")")
            .call(xAxis);

svg.append("g")
           .attr("class", "y axis")
            .attr("transform", "translate(" + (width) + ",0)")
           .call(YLeftAxis)

.append("text")
           .attr("transform", "rotate(-90)")
           .attr("y", -10)

.attr("dy", ".71em")
           .style("text-anchor", "end")
           .text("Percent");

svg.append("g")
            .attr("class", "y axis")
            .call(yAxis)
          .append("text")
            .attr("transform", "rotate(-90)")
            .attr("y", 6)
            .attr("dy", ".71em")
            .style("text-anchor", "end")
            .text("Population");

var state = svg.selectAll(".state")
            .data(Data)
          .enter().append("g")
            .attr("class", "state")
            .attr("transform", function (d) { return "translate(" + x0(d.Date) + ",0)"; });

state.selectAll("rect")
            .data(function (d) { return d.Categories; })
          .enter().append("rect")
            .attr("width", x1.rangeBand())
            .attr("x", function (d) { return x1(d.Name); })
            .attr("y", function (d) { return y(d.Value); })
            //.attr("height", function (d) { return height - y(d.Value); })
            .style("fill", function (d) { return color(d.Name); })
            .transition().delay(500).attrTween("height", function (d) {
                var i = d3.interpolate(0, height - y(d.Value));
                return function (t)
                {
                    return i(t);
                }
            });

// drawaing lines
//         svg.selectAll(".lines").data(lineData).enter().append("g").attr("class", "line")
//         .each(function (d) {
//             Name=d[0].Name
//             d3.select(this).append("path").attr("d", function (b) { return line(b) }).style({ "stroke-width": "2px", "fill": "none" }).style("stroke", LineColor(Name)).transition().duration(1500);
//         })
					svg.selectAll(".lines")
                .classed('labels-group', true)
                .data(lineData)
                .enter()
                .append("g")
                .attr("class", "line")
                .each(function (d) {
                    Name = d[0].Name;
                    d3.select(this)
                        .append("path")
                        .attr("d", function (b) { return line(b) })
                        .style({ "stroke-width": "3px", "fill": "none" })
                        .style("stroke", LineColor(Name))
		                    .transition().duration(1500);

})

// Legends

var LegendHolder = svg.append("g").attr("class", "legendHolder");
        var legend = LegendHolder.selectAll(".legend")
            .data(Categories.map(function (d) { return {"Name":d.Name,"Type":d.Type}}))
          .enter().append("g")
            .attr("class", "legend")
            .attr("transform", function (d, i) { return "translate(0," +( height+ margin.bottom/2 )+ ")"; })
            .each(function (d,i) {
                //  Legend Symbols

d3.select(this).append("rect")
                .attr("width", function () { return 18 })
                .attr("x", function (b) {

left = (i+1) * 15 + i * 18 + i * 5 + textWidthHolder;
                    return left;
                })
                 .attr("y", function (b) { return b.Type == 'bar'?0:7})
                .attr("height", function (b) { return b.Type== 'bar'? 18:5 })
                .style("fill", function (b) { return b.Type == 'bar' ? color(d.Name) : LineColor(d.Name) });

//  Legend Text

d3.select(this).append("text")
                .attr("x", function (b) {

left = (i+1) * 15 + (i+1) * 18 + (i + 1) * 5 + textWidthHolder;

return left;
                })
                .attr("y", 9)
                .attr("dy", ".35em")
                .style("text-anchor", "start")
                .text(d.Name);

textWidthHolder += getTextWidth(d.Name, "10px", "calibri");
            });

// Legend Placing

d3.select(".legendHolder").attr("transform", function (d) {
            thisWidth = d3.select(this).node().getBBox().width;
            return "translate(" + ((width) / 2 - thisWidth / 2) + ",0)";
        })

</script>
</body>

https://d3js.org/d3.v3.min.js