This is the code for Chapter 9, Figure 10 from D3.js in Action that continues to develop a data dashboard, now using d3.svg.brush() to allow users to filter data by time.
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Ch. 9, Fig. 10 - D3.js in Action
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<html> | |
<head> | |
<title>D3 in Action Chapter 9 - Example 4</title> | |
<meta charset="utf-8" /> | |
<script src="https://d3js.org/colorbrewer.v1.min.js" type="text/JavaScript"></script> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script> | |
</head> | |
<style> | |
body,html { | |
width: 100%; | |
height: 100%; #a | |
} | |
.svgDash { | |
width: 50%; | |
height: 50%; | |
background: #fcfcfc; | |
} | |
#leftSVG { | |
float:left; | |
} | |
#spreadsheet { | |
width: 100%; | |
height: 30%; | |
overflow:auto; | |
background: #fcfcfc; | |
} | |
circle.pack { | |
stroke: black; | |
stroke-width: 2px; | |
} | |
rect.bar { | |
fill: gray; | |
stroke: black; | |
stroke-width: 1px; | |
} | |
div.table { | |
position:relative; | |
} | |
div.data { | |
position: absolute; | |
width: 90px; | |
padding: 0 5px; | |
} | |
div.head { | |
position: absolute; | |
} | |
div.datarow { | |
position: absolute; | |
width: 100%; | |
border-top: 2px black solid; | |
background: white; | |
height: 35px; | |
overflow: hidden; | |
} | |
#brush { | |
width: 100%; | |
height: 20%; | |
} | |
rect.extent { | |
fill-opacity: .25; | |
stroke: black; | |
stroke-width: 2px; | |
} | |
.tick line { | |
shape-rendering: crispEdges; | |
stroke: #000; | |
} | |
line.minor { | |
stroke: #777; | |
stroke-dasharray: 2,2; | |
} | |
path.domain { | |
fill: none; | |
stroke: black; | |
} | |
</style> | |
<body> | |
<svg id="leftSVG" class="svgDash"></svg> | |
<svg id="rightSVG" class="svgDash"></svg> | |
<div id="brush"></div> | |
<div id="spreadsheet"></div> | |
</body> | |
<footer> | |
<script> | |
window.onresize = function(event) { | |
redraw(); | |
} | |
function hover(hoverD) { | |
d3.selectAll("circle.pack").filter(function (d) {return d == hoverD}).style("fill", "#94B8FF"); | |
d3.selectAll("div.datarow").filter(function (d) {return d == hoverD}).style("background", "#94B8FF"); | |
d3.selectAll("rect.bar").filter(function (d) {return d == hoverD}).style("fill", "#94B8FF"); | |
d3.selectAll("rect.bar").filter(function (d) {return d.values.indexOf(hoverD) > -1}).style("fill", "#94B8FF"); | |
} | |
function mouseOut() { | |
d3.selectAll("circle.pack").style("fill", function(d) {return depthScale(d.depth)}); | |
d3.selectAll("rect.bar").style("fill", "gray").style("stroke-width", 0); | |
d3.selectAll("div.datarow").style("background", "white"); | |
} | |
d3.json("tweets.json",function(error,data) {main(data.tweets)}); | |
function main(incData) { | |
createSpreadsheet(incData, "#spreadsheet"); | |
var nestedTweets = d3.nest() | |
.key(function (el) {return el.user}) | |
.entries(incData); | |
packableTweets = {id: "root", values: nestedTweets} | |
createBar(nestedTweets, "#rightSVG"); | |
createPack(packableTweets, "#leftSVG"); | |
createBrush(incData); | |
redraw(); | |
} | |
function createBrush(incData) { | |
timeRange = d3.extent(incData.map(function(d) {return new Date(d.timestamp)})); | |
timeScale = d3.time.scale().domain(timeRange).range([0,1000]); | |
timeAxis = d3.svg.axis() | |
.scale(timeScale) | |
.orient('bottom') | |
.ticks(d3.time.hours, 2) | |
.tickFormat(d3.time.format('%I%p')); | |
timeBrush = d3.svg.brush() | |
.x(timeScale) | |
.extent(timeRange) | |
.on("brush", brushed); | |
var brushSVG = d3.select("#brush").append("svg").attr("height", "100%").attr("width", "100%"); | |
brushSVG.append("g").attr("transform", "translate(0,100)").attr("id", "brushAxis").call(timeAxis); | |
brushSVG.append("g").attr("transform", "translate(0,50)").attr("id", "brushG").call(timeBrush) | |
.selectAll("rect").attr("height", 50); | |
function brushed() { | |
var rightSize = canvasSize("#rightSVG"); | |
var e = timeBrush.extent(); | |
d3.selectAll("circle.pack").filter(function(d){return d.depth == 2}) | |
.style("display", function (d) { | |
return new Date(d.timestamp) >= e[0] && new Date(d.timestamp) <= e[1] ? "block" : "none" | |
}); | |
d3.select("#rightSVG") | |
.selectAll("rect") | |
.attr("x", function(d,i) {return barXScale(d.key) + 5}) | |
.attr("width", function() {return barXScale.rangeBand() - 5}) | |
.attr("y", function(d) {return barYScale(filteredLength(d))}) | |
.style("stroke", "black") | |
.attr("height", function(d) {return rightSize[1] - barYScale(filteredLength(d))}) | |
function filteredLength(d) { | |
var filteredValues = d.values.filter(function (p) { | |
return new Date(p.timestamp) >= e[0] && new Date(p.timestamp) <= e[1] | |
}) | |
return filteredValues.length; | |
} | |
} | |
} | |
function canvasSize(targetElement) { | |
var newHeight = parseFloat(d3.select(targetElement).node().clientHeight); | |
var newWidth = parseFloat(d3.select(targetElement).node().clientWidth); | |
return [newWidth,newHeight]; | |
} | |
function redraw() { | |
var leftSize = canvasSize("#leftSVG"); | |
packChart.size(leftSize) | |
d3.select("#leftSVG") | |
.selectAll("circle") | |
.attr("class", "pack") | |
.data(packChart(packableTweets)) | |
.attr("r", function(d) {return d.r - (d.depth * 0)}) | |
.attr("cx", function(d) {return d.x}) | |
.attr("cy", function(d) {return d.y}) | |
.style("stroke", "black") | |
.style("stroke", "2px") | |
.on("brushstart", function() {d3.select(this).style("stroke-width", "4px")}) | |
.on("brushend", function() {d3.select(this).style("stroke-width", "2px")}); | |
var rectNumber = d3.select("#rightSVG").selectAll("rect").size(); | |
var rectData = d3.select("#rightSVG").selectAll("rect").data(); | |
var rectMax = d3.max(rectData, function(d) {return d.values.length}); | |
var rightSize = canvasSize("#rightSVG"); | |
barXScale = d3.scale.ordinal().domain(rectData.map(function(d){return d.key})).rangeBands([0, rightSize[0]]); | |
barYScale = d3.scale.linear() | |
.domain([0, rectMax]) | |
.range([rightSize[1],0]) | |
timeTickScale = d3.scale.linear().domain([0,1000]).rangeRound([10,1]).clamp(true); | |
console.log(Math.floor((rightSize[0] + leftSize[0]) / 100)) | |
var bExtent = timeBrush.extent(); | |
timeScale.range([0,rightSize[0] + leftSize[0]]); | |
timeAxis.scale(timeScale).ticks(d3.time.hours, timeTickScale((rightSize[0] + leftSize[0]))); | |
timeBrush.x(timeScale); | |
d3.select("#rightSVG") | |
.selectAll("rect") | |
.attr("x", function(d,i) {return barXScale(d.key) + 5}) | |
.attr("width", function() {return barXScale.rangeBand() - 5}) | |
.attr("y", function(d) {return barYScale(d.values.length)}) | |
.style("stroke", "black") | |
.attr("height", function(d) {return rightSize[1] - barYScale(d.values.length)}) | |
d3.select("#brushAxis").call(timeAxis); | |
d3.select("#brushG").call(timeBrush.extent(bExtent)) ; | |
} | |
function createBar(incData,targetSVG) { | |
d3.select(targetSVG).selectAll("rect").data(incData) | |
.enter() | |
.append("rect") | |
.attr("class", "bar") | |
.attr("fill", "darkred") | |
.on("mouseover", hover) | |
.on("mouseout", mouseOut); | |
} | |
function createPack(incData,targetSVG) { | |
depthScale = d3.scale.quantize().domain([0,1,2]).range(colorbrewer.Reds[3]); | |
packChart = d3.layout.pack(); | |
packChart.size([500,500]) | |
.children(function(d) {return d.values}) | |
.value(function(d) {return 1}) | |
d3.select(targetSVG) | |
.append("g") | |
.attr("transform", "translate(0,0)") | |
.selectAll("circle") | |
.data(packChart(incData)) | |
.enter() | |
.append("circle") | |
.style("fill", function(d) {return depthScale(d.depth)}) | |
.on("mouseover", hover) | |
.on("mouseout", mouseOut); | |
} | |
function createSpreadsheet(incData, targetDiv) { | |
var keyValues = d3.keys(incData[0]) | |
d3.select(targetDiv) | |
.append("div") | |
.attr("class", "table") | |
d3.select("div.table") | |
.append("div") | |
.attr("class", "head row") | |
.selectAll("div.data") | |
.data(keyValues) | |
.enter() | |
.append("div") | |
.attr("class", "data") | |
.html(function (d) {return d}) | |
.style("left", function(d,i) {return (i * 100) + "px"}); | |
d3.select("div.table") | |
.selectAll("div.datarow") | |
.data(incData, function(d) {return d.content}).enter() | |
.append("div") | |
.attr("class", "datarow row") | |
.style("top", function(d,i) {return (40 + (i * 40)) + "px"}) | |
.on("mouseover", hover) | |
.on("mouseout", mouseOut); | |
d3.selectAll("div.datarow") | |
.selectAll("div.data") | |
.data(function(d) {return d3.entries(d)}) | |
.enter() | |
.append("div") | |
.attr("class", "data") | |
.html(function (d) {return d.value}) | |
.style("left", function(d,i,j) {return (i * 100) + "px"}); | |
} | |
</script> | |
</footer> | |
</html> |
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Learn more about bidirectional Unicode characters
{ | |
"tweets": [ | |
{"user": "Al", "content": "I really love seafood.", "timestamp": " Mon Dec 23 2013 21:30 GMT-0800 (PST)", "retweets": ["Raj","Pris","Roy"], "favorites": ["Sam"]}, | |
{"user": "Al", "content": "I take that back, this doesn't taste so good.", "timestamp": "Mon Dec 23 2013 21:55 GMT-0800 (PST)", "retweets": ["Roy"], "favorites": []}, | |
{"user": "Al", "content": "From now on, I'm only eating cheese sandwiches.", "timestamp": "Mon Dec 23 2013 22:22 GMT-0800 (PST)", "retweets": [], "favorites": ["Roy","Sam"]}, | |
{"user": "Roy", "content": "Great workout!", "timestamp": " Mon Dec 23 2013 7:20 GMT-0800 (PST)", "retweets": [], "favorites": []}, | |
{"user": "Roy", "content": "Spectacular oatmeal!", "timestamp": " Mon Dec 23 2013 7:23 GMT-0800 (PST)", "retweets": [], "favorites": []}, | |
{"user": "Roy", "content": "Amazing traffic!", "timestamp": " Mon Dec 23 2013 7:47 GMT-0800 (PST)", "retweets": [], "favorites": []}, | |
{"user": "Roy", "content": "Just got a ticket for texting and driving!", "timestamp": " Mon Dec 23 2013 8:05 GMT-0800 (PST)", "retweets": [], "favorites": ["Sam", "Sally", "Pris"]}, | |
{"user": "Pris", "content": "Going to have some boiled eggs.", "timestamp": " Mon Dec 23 2013 18:23 GMT-0800 (PST)", "retweets": [], "favorites": ["Sally"]}, | |
{"user": "Pris", "content": "Maybe practice some gymnastics.", "timestamp": " Mon Dec 23 2013 19:47 GMT-0800 (PST)", "retweets": [], "favorites": ["Sally"]}, | |
{"user": "Sam", "content": "@Roy Let's get lunch", "timestamp": " Mon Dec 23 2013 11:05 GMT-0800 (PST)", "retweets": ["Pris"], "favorites": ["Sally", "Pris"]} | |
] | |
} | |
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