New Year's Resolution for 2017: Make a D3 Block a day to teach myself D3. This is Number 16. This example builds on yesterday's scatterplot adding in a label indicating the year-to-year correlation. This correlation is supplied in the data set which is now JSON instead of csv (first try to use JSON data instead of a flat format like csv).
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D3 Block-a-Day: Day 16, January 16th, 2017
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| license:gpl-3.0 | |
| height:600 | |
| border:no | |
| Raw |
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| [{ | |
| "year": 2016, | |
| "correlation": 0.552, | |
| "teams": [{ | |
| "name": "Arizona Diamondbacks", | |
| "wins": 69 | |
| }, { | |
| "name": "Atlanta Braves", | |
| "wins": 68 | |
| }, { | |
| "name": "Baltimore Orioles", | |
| "wins": null | |
| }, { | |
| "name": "Baltimore Orioles", | |
| "wins": 89 | |
| }, { | |
| "name": "Boston Red Sox", | |
| "wins": 93 | |
| }, { | |
| "name": "Chicago Cubs", | |
| "wins": 103 | |
| }, { | |
| "name": "Chicago White Sox", | |
| "wins": 78 | |
| }, { | |
| "name": "Cincinnati Reds", | |
| "wins": 68 | |
| }, { | |
| "name": "Cleveland Indians", | |
| "wins": 94 | |
| }, { | |
| "name": "Colorado Rockies", | |
| "wins": 75 | |
| }, { | |
| "name": "Detroit Tigers", | |
| "wins": 86 | |
| }, { | |
| "name": "Houston Astros", | |
| "wins": 84 | |
| }, { | |
| "name": "Kansas City Royals", | |
| "wins": 81 | |
| }, { | |
| "name": "Anaheim Angels", | |
| "wins": 74 | |
| }, { | |
| "name": "Los Angeles Dodgers", | |
| "wins": 91 | |
| }, { | |
| "name": "Florida Marlins", | |
| "wins": 79 | |
| }, { | |
| "name": "Milwaukee Brewers", | |
| "wins": 73 | |
| }, { | |
| "name": "Minnesota Twins", | |
| "wins": 59 | |
| }, { | |
| "name": "New York Mets", | |
| "wins": 87 | |
| }, { | |
| "name": "New York Yankees", | |
| "wins": 84 | |
| }, { | |
| "name": "Oakland A's", | |
| "wins": 69 | |
| }, { | |
| "name": "Philadelphia Phillies", | |
| "wins": 71 | |
| }, { | |
| "name": "Pittsburgh Pirates", | |
| "wins": 78 | |
| }, { | |
| "name": "San Diego Padres", | |
| "wins": 68 | |
| }, { | |
| "name": "San Francisco Giants", | |
| "wins": 87 | |
| }, { | |
| "name": "Seattle Mariners", | |
| "wins": 86 | |
| }, { | |
| "name": "Saint Louis Cardinals", | |
| "wins": 86 | |
| }, { | |
| "name": "Tampa Bay Devil Rays", | |
| "wins": 68 | |
| }, { | |
| "name": "Texas Rangers", | |
| "wins": 95 | |
| }, { | |
| "name": "Toronto Blue Jays", | |
| "wins": 89 | |
| }, { | |
| "name": "Washington Nationals", | |
| "wins": 95 | |
| }] | |
| }, { | |
| "year": 2015, | |
| "correlation": 0.3164, | |
| "teams": [{ | |
| "name": "Arizona Diamondbacks", | |
| "wins": 79 | |
| }, { | |
| "name": "Atlanta Braves", | |
| "wins": 67 | |
| }, { | |
| "name": "Baltimore Orioles", | |
| "wins": null | |
| }, { | |
| "name": "Baltimore Orioles", | |
| "wins": 81 | |
| }, { | |
| "name": "Boston Red Sox", | |
| "wins": 78 | |
| }, { | |
| "name": "Chicago Cubs", | |
| "wins": 97 | |
| }, { | |
| "name": "Chicago White Sox", | |
| "wins": 76 | |
| }, { | |
| "name": "Cincinnati Reds", | |
| "wins": 64 | |
| }, { | |
| "name": "Cleveland Indians", | |
| "wins": 81 | |
| }, { | |
| "name": "Colorado Rockies", | |
| "wins": 68 | |
| }, { | |
| "name": "Detroit Tigers", | |
| "wins": 74 | |
| }, { | |
| "name": "Houston Astros", | |
| "wins": 86 | |
| }, { | |
| "name": "Kansas City Royals", | |
| "wins": 95 | |
| }, { | |
| "name": "Anaheim Angels", | |
| "wins": 85 | |
| }, { | |
| "name": "Los Angeles Dodgers", | |
| "wins": 92 | |
| }, { | |
| "name": "Florida Marlins", | |
| "wins": 71 | |
| }, { | |
| "name": "Milwaukee Brewers", | |
| "wins": 68 | |
| }, { | |
| "name": "Minnesota Twins", | |
| "wins": 83 | |
| }, { | |
| "name": "New York Mets", | |
| "wins": 90 | |
| }, { | |
| "name": "New York Yankees", | |
| "wins": 87 | |
| }, { | |
| "name": "Oakland A's", | |
| "wins": 68 | |
| }, { | |
| "name": "Philadelphia Phillies", | |
| "wins": 63 | |
| }, { | |
| "name": "Pittsburgh Pirates", | |
| "wins": 98 | |
| }, { | |
| "name": "San Diego Padres", | |
| "wins": 74 | |
| }, { | |
| "name": "San Francisco Giants", | |
| "wins": 84 | |
| }, { | |
| "name": "Seattle Mariners", | |
| "wins": 76 | |
| }, { | |
| "name": "Saint Louis Cardinals", | |
| "wins": 100 | |
| }, { | |
| "name": "Tampa Bay Devil Rays", | |
| "wins": 80 | |
| }, { | |
| "name": "Texas Rangers", | |
| "wins": 88 | |
| }, { | |
| "name": "Toronto Blue Jays", | |
| "wins": 93 | |
| }, { | |
| "name": "Washington Nationals", | |
| "wins": 83 | |
| }] | |
| }] |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <head> | |
| <title>D3 Block-a-Day: Day 16, January 16, 2017</title> | |
| </head> | |
| <!-- Example based on Michele Weigle's D3 Scatterplot Example http://bl.ocks.org/weiglemc/6185069 --> | |
| <style> | |
| body { | |
| font: 16pt Helvectical Neue; | |
| } | |
| .axis path, | |
| .axis line { | |
| fill: none; | |
| stroke: #000; | |
| shape-rendering: crispEdges; | |
| } | |
| .dot { | |
| stroke: black; | |
| stroke-width: 2px; | |
| fill: #ffe0e0; | |
| } | |
| .tooltip { | |
| background-color: #fff8dc; | |
| padding: 7px; | |
| text-shadow: #f5f5f5 0 1px 0; | |
| font: 13px Helvetica Neue; | |
| border: 2px solid; | |
| border-color: black; | |
| border-radius: 5px; | |
| position: absolute; | |
| box-shadow: rgba(0, 0, 0, 0.3) 0 2px 10px; | |
| } | |
| .xaxis { | |
| font: 14px Helvetica Neue; | |
| } | |
| .yaxis { | |
| font: 14px Helvetica Neue; | |
| } | |
| </style> | |
| <body> | |
| <script src="//d3js.org/d3.v4.min.js"></script> | |
| <script> | |
| var margin = { top: 20, right: 20, bottom: 50, left: 70 }, | |
| width = 960 - margin.left - margin.right, | |
| height = 600 - margin.top - margin.bottom; | |
| /* | |
| * value accessor - returns the value to encode for a given data object. | |
| * scale - maps value to a visual display encoding, such as a pixel position. | |
| * map function - maps from data value to display value | |
| * axis - sets up axis | |
| */ | |
| // setup x | |
| var xValue = function (d) { return d.winsPrev; }, // data -> value | |
| xScale = d3.scaleLinear().range([0, width]), // value -> display | |
| xMap = function (d) { return xScale(xValue(d)); }, // data -> display | |
| xAxis = d3.axisBottom(xScale); | |
| // setup y | |
| var yValue = function (d) { return d.wins; }, // data -> value | |
| yScale = d3.scaleLinear().range([height, 0]), // value -> display | |
| yMap = function (d) { return yScale(yValue(d)); }, // data -> display | |
| yAxis = d3.axisLeft(yScale); | |
| // add the graph canvas to the body of the webpage | |
| 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 + ")"); | |
| // add the tooltip area to the webpage | |
| var tooltip = d3.select("body").append("div") | |
| .attr("class", "tooltip") | |
| .style("opacity", 0); | |
| // load data | |
| d3.json("baseball_team_wins_current.json", function (error, data) { | |
| if (error) return console.warn(error); | |
| // change string into number format | |
| data.forEach(function (d) { | |
| d['year'] = +d['year']; | |
| }); | |
| // don't want dots overlapping axis, so add in buffer to data domain | |
| xScale.domain([40, 120]); | |
| yScale.domain([40, 120]); | |
| // x-axis | |
| svg.append("g") | |
| .attr("class", "xaxis") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(xAxis); | |
| svg.append("text") | |
| .attr("transform", | |
| "translate(" + (width * 0.1) + " ," + | |
| (height + margin.top + 30) + ")") | |
| .style("text-anchor", "left") | |
| .style("font-family", "Helvetica Neue") | |
| .text("Wins 2015"); | |
| // y-axis | |
| svg.append("g") | |
| .attr("class", "yaxis") | |
| .call(yAxis); | |
| svg.append("text") | |
| .attr("transform", "rotate(-90)") | |
| .attr("y", 10 - margin.left) | |
| .attr("x", - 0.75 * height) | |
| .attr("dy", ".71em") | |
| .style("text-anchor", "middle") | |
| .style("font-family", "Helvetica Neue") | |
| .text("Wins 2016"); | |
| var activeYear = 2016; | |
| var years = data.filter(y => { | |
| return y.year === activeYear || y.year === activeYear - 1; | |
| }); | |
| var teams = years[0].teams; | |
| teams.forEach((t, i) => { | |
| var sameTeamPrevYear = years[1].teams.filter(t2 => { | |
| return t2.name === t.name; | |
| }); | |
| t.winsPrev = sameTeamPrevYear[0].wins; | |
| }); | |
| // draw dots | |
| svg.selectAll(".dot") | |
| .data(teams) | |
| .enter().append("circle") | |
| .attr("class", "dot") | |
| .attr("r", 10) | |
| .attr("cx", xMap) | |
| .attr("cy", yMap) | |
| .on("mouseover", function (d) { | |
| tooltip.transition() | |
| .duration(150) | |
| .style("opacity", .9); | |
| tooltip.html("<b>" + d.name + "</b>" + "<br/> 2015: " + xValue(d) | |
| + " Wins, 2016: " + yValue(d) + " Wins") | |
| .style("left", (d3.event.pageX + 5) + "px") | |
| .style("top", (d3.event.pageY - 28) + "px"); | |
| }) | |
| .on("mouseout", function (d) { | |
| tooltip.transition() | |
| .duration(300) | |
| .style("opacity", 0); | |
| }); | |
| }); | |
| </script> | |
| </body> |
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