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MultipleLinesChart D3
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| <!doctype html> | |
| <html> | |
| <head> | |
| <!-- Load d3 source scripts --> | |
| <script src="https://d3js.org/d3.v4.min.js" type="text/JavaScript"></script> | |
| <script src="https://d3js.org/colorbrewer.v1.min.js"></script> | |
| <!-- style section--> | |
| <style> | |
| .axis path{ | |
| stroke:black; | |
| stroke-width:2px ; | |
| } | |
| .axis line{ | |
| stroke: black; | |
| stroke-width: 1.5px; | |
| } | |
| .axis text{ | |
| fill: black; | |
| font-weight: bold; | |
| font-size: 14px; | |
| font-family:"Arial Black", Gadget, sans-serif; | |
| } | |
| .legend text{ | |
| fill: black; | |
| font-family:"Arial Black", Gadget, sans-serif; | |
| } | |
| </style> | |
| </head> | |
| <body onload="lineChart()"> | |
| <!-- svg canvas--> | |
| <svg width="1200" height="750" style="background-image: url('https://etc.usf.edu/presentations/backgrounds/grid/grid_04/1304m.gif');"> | |
| </svg> | |
| </body> | |
| <script> | |
| function lineChart(data) { | |
| //DATASOURCE: eMarketer, March 2018 | |
| var data = [ | |
| { year: 2016, media: "Digital", spending: 72.2 }, | |
| { year: 2017, media: "Digital", spending: 90.39 }, | |
| { year: 2018, media: "Digital", spending: 107.3 }, | |
| { year: 2019, media: "Digital", spending: 125.75 }, | |
| { year: 2020, media: "Digital", spending: 142.23 }, | |
| { year: 2021, media: "Digital", spending: 156.43 }, | |
| { year: 2022, media: "Digital", spending: 170.48 }, | |
| { year: 2016, media: "TV", spending: 71.29 }, | |
| { year: 2017, media: "TV", spending: 70.22 }, | |
| { year: 2018, media: "TV", spending: 69.87 }, | |
| { year: 2019, media: "TV", spending: 69.17 }, | |
| { year: 2020, media: "TV", spending: 69.52 }, | |
| { year: 2021, media: "TV", spending: 68.82 }, | |
| { year: 2022, media: "TV", spending: 68.13 }, | |
| { year: 2016, media: "Print", spending: 25.49 }, | |
| { year: 2017, media: "Print", spending: 22.81 }, | |
| { year: 2018, media: "Print", spending: 20.05 }, | |
| { year: 2019, media: "Print", spending: 17.29 }, | |
| { year: 2020, media: "Print", spending: 15.19 }, | |
| { year: 2021, media: "Print", spending: 13.56 }, | |
| { year: 2022, media: "Print", spending: 12.38 }, | |
| { year: 2016, media: "Radio", spending: 14.33 }, | |
| { year: 2017, media: "Radio", spending: 14.33 }, | |
| { year: 2018, media: "Radio", spending: 14.41 }, | |
| { year: 2019, media: "Radio", spending: 14.43 }, | |
| { year: 2020, media: "Radio", spending: 14.46 }, | |
| { year: 2021, media: "Radio", spending: 14.49 }, | |
| { year: 2022, media: "Radio", spending: 14.52 }, | |
| { year: 2016, media: "Out-of-home", spending: 7.6 }, | |
| { year: 2017, media: "Out-of-home", spending: 7.75 }, | |
| { year: 2018, media: "Out-of-home", spending: 7.87 }, | |
| { year: 2019, media: "Out-of-home", spending: 7.95 }, | |
| { year: 2020, media: "Out-of-home", spending: 8.03 }, | |
| { year: 2021, media: "Out-of-home", spending: 8.11 }, | |
| { year: 2022, media: "Out-of-home", spending: 8.19 }, | |
| { year: 2016, media: "Directories", spending: 2.35 }, | |
| { year: 2017, media: "Directories", spending: 1.83 }, | |
| { year: 2018, media: "Directories", spending: 1.47 }, | |
| { year: 2019, media: "Directories", spending: 1.19 }, | |
| { year: 2020, media: "Directories", spending: 0.99 }, | |
| { year: 2021, media: "Directories", spending: 0.84 }, | |
| { year: 2022, media: "Directories", spending: 0.74 } | |
| ]; | |
| //set canvas margins | |
| leftMargin=70 | |
| topMargin=30 | |
| //format the year data | |
| var parseTime = d3.timeParse("%Y"); | |
| data.forEach(function (d) { | |
| d.year = parseTime(d.year); | |
| }); | |
| //scale xAxis | |
| var xExtent = d3.extent(data, d => d.year); | |
| xScale = d3.scaleTime().domain(xExtent).range([leftMargin, 900]) | |
| //scale yAxis | |
| var yMax=d3.max(data,d=>d.spending) | |
| yScale = d3.scaleLinear().domain([0, yMax+topMargin]).range([600, 0]) | |
| //draw xAxis and xAxis label | |
| xAxis = d3.axisBottom() | |
| .scale(xScale) | |
| d3.select("svg") | |
| .append("g") | |
| .attr("class", "axis") | |
| .attr("transform", "translate(0,620)") | |
| .call(xAxis) | |
| .append("text") | |
| .attr("x", (900+70)/2) //middle of the xAxis | |
| .attr("y", "50") // a little bit below xAxis | |
| .text("Year") | |
| //yAxis and yAxis label | |
| yAxis = d3.axisLeft() | |
| .scale(yScale) | |
| .ticks(10) | |
| d3.select('svg') | |
| .append("g") | |
| .attr("class", "axis") | |
| .attr("transform", `translate(${leftMargin},20)`) //use variable in translate | |
| .call(yAxis) | |
| .append("text") | |
| .attr("transform", "rotate(-90)") | |
| .attr("x", "-150") | |
| .attr("y", "-50") | |
| .attr("text-anchor", "end") | |
| .text("US Media Ad Spending (Billions)") | |
| //use .nest()function to group data | |
| var sumstat = d3.nest() | |
| .key(d => d.media) | |
| .entries(data); | |
| console.log(sumstat) | |
| //set color pallete for different vairables | |
| var mediaName = sumstat.map(d => d.key) | |
| var color = d3.scaleOrdinal().domain(mediaName).range(colorbrewer.Set2[6]) | |
| //select path | |
| //three types: curveBasis,curveStep, curveCardinal | |
| d3.select("svg") | |
| .selectAll(".line") | |
| .append("g") | |
| .attr("class", "line") | |
| .data(sumstat) | |
| .enter() | |
| .append("path") | |
| .attr("d", function (d) { | |
| return d3.line() | |
| .x(d => xScale(d.year)) | |
| .y(d => yScale(d.spending)).curve(d3.curveCardinal) | |
| (d.values) | |
| }) | |
| .attr("fill", "none") | |
| .attr("stroke", d => color(d.key)) | |
| .attr("stroke-width", 2) | |
| //append circle | |
| d3.select("svg") | |
| .selectAll("circle") | |
| .append("g") | |
| .data(data) | |
| .enter() | |
| .append("circle") | |
| .attr("r", 6) | |
| .attr("cx", d => xScale(d.year)) | |
| .attr("cy", d => yScale(d.spending)) | |
| .style("fill", d => color(d.media)) | |
| //append legends | |
| var legend = d3.select("svg") | |
| .selectAll('g.legend') | |
| .data(sumstat) | |
| .enter() | |
| .append("g") | |
| .attr("class", "legend"); | |
| legend.append("circle") | |
| .attr("cx", 1000) | |
| .attr('cy', (d, i) => i * 30 + 350) | |
| .attr("r", 6) | |
| .style("fill", d => color(d.key)) | |
| legend.append("text") | |
| .attr("x", 1020) | |
| .attr("y", (d, i) => i * 30 + 355) | |
| .text(d => d.key) | |
| //append title | |
| d3.select("svg") | |
| .append("text") | |
| .attr("x", 485) | |
| .attr("y", 30) | |
| .attr("text-anchor", "middle") | |
| .text("US Total Media Ad Spending, by Media, 2016-2022") | |
| .style("fill", "black") | |
| .style("font-size", 28) | |
| .style("font-family", "Arial Black") | |
| //apend source | |
| d3.select("svg") | |
| .append("text") | |
| .attr("x", 70) | |
| .attr("y", 700) | |
| .text("Source: eMarketer, March 2018") | |
| .style("fill", "black") | |
| .style("font-size", 14) | |
| .style("font-family", "Arial Black") | |
| } | |
| </script> | |
| </html> |
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