我正在AngularJS中调整此渐变example。以下是我使用的数据集：
var stays=[
{
day:2,
hour:1,
time_spent:127
},
{
day:4,
hour:1,
time_spent:141
},
{
day:1,
hour:1,
time_spent:134
},
{
day:5,
hour:1,
time_spent:174
},
{
day:3,
hour:1,
time_spent:131
},
{
day:6,
hour:1,
time_spent:333
}];
问题是我想为热图中创建的每个方块构建一个工具提示。工具提示在这里：
var heatMap = svg.selectAll(".hour")
.data(stays)
.enter().append("rect")
.attr("x", function(d) { return (d.hour - 1) * gridSize; })
.attr("y", function(d) { return (d.day - 1) * gridSize; })
.attr("class", "hour bordered")
.attr("width", gridSize)
.attr("height", gridSize)
.style("stroke", "white")
.style("stroke-opacity", 0.6)
.style("stroke-width", 0.8)
.style("fill", function(d) { return colorScale(d.time_spent); })
.on("mouseover", function(d, i) {
// Construct tooltip
var tooltip_html = '';
tooltip_html += '<div class="header"><strong>' + 'Stays' + ' </strong></div><br>';
// Add info to the tooltip
angular.forEach(stays, function (d) {
tooltip_html += '<div><span><strong>' + makeid() + '</strong></span>';
tooltip_html += '<span>' + ' ' + d.time_spent + '</span></div>';
console.log(d.time_spent);
}, days);
// Set tooltip width
tooltip.html(tooltip_html)
.style("width", 300 + "px")
.style("left", (d3.event.layerX+10) + "px")
.style("top", (d3.event.layerY+10) + "px");
// Tooltip transition and more styling
tooltip.style('display', 'block')
.transition()
.ease('ease-in')
.duration(100)
.style("opacity", .9);
})
.on("mouseout", function(d) {
tooltip.transition()
.duration(100)
.ease('ease-in')
.style('opacity', 0);
});
这里的想法是，对于我访问的每个方格，工具提示将显示相关的标签（我仍然不使用标签，但它们将成为我已经展示的数据集的一部分，I＆ ＃39; m使用makeid()函数创建随机名称）以及相关time_spent数据的细分。根据我现在使用的内容，它正在编写完整的数字列表，而不是与每个方块相关的数字。想法？谢谢。
答案 0 :(得分：0)
不是为每个单元格构建tootip HTML，而是考虑将数据附加到每个单元格rect。创建一个数据div并在光标移过单元格时填充它。
我将此添加到热图渐变示例中。试一试。
var accidents=[{day:2,hour:1,count:127},{day:4,hour:1,count:141},{day:1,hour:1,count:134},{day:5,hour:1,count:174},{day:3,hour:1,count:131},{day:6,hour:1,count:333},{day:7,hour:1,count:311},{day:2,hour:2,count:79},{day:4,hour:2,count:99},{day:1,hour:2,count:117},{day:5,hour:2,count:123},{day:3,hour:2,count:92},{day:6,hour:2,count:257},{day:7,hour:2,count:293},{day:2,hour:3,count:55},{day:4,hour:3,count:73},{day:1,hour:3,count:107},{day:5,hour:3,count:89},{day:3,hour:3,count:66},{day:6,hour:3,count:185},{day:7,hour:3,count:262},{day:2,hour:4,count:39},{day:4,hour:4,count:67},{day:1,hour:4,count:59},{day:5,hour:4,count:83},{day:3,hour:4,count:45},{day:6,hour:4,count:180},{day:7,hour:4,count:220},{day:2,hour:5,count:48},{day:4,hour:5,count:57},{day:1,hour:5,count:73},{day:5,hour:5,count:76},{day:3,hour:5,count:72},{day:6,hour:5,count:168},{day:7,hour:5,count:199},{day:2,hour:6,count:129},{day:4,hour:6,count:102},{day:1,hour:6,count:129},{day:5,hour:6,count:140},{day:3,hour:6,count:117},{day:6,hour:6,count:148},{day:7,hour:6,count:193},{day:2,hour:7,count:314},{day:4,hour:7,count:284},{day:1,hour:7,count:367},{day:5,hour:7,count:270},{day:3,hour:7,count:310},{day:6,hour:7,count:179},{day:7,hour:7,count:192},{day:2,hour:8,count:806},{day:4,hour:8,count:811},{day:1,hour:8,count:850},{day:5,hour:8,count:609},{day:3,hour:8,count:846},{day:6,hour:8,count:208},{day:7,hour:8,count:144},{day:2,hour:9,count:1209},{day:4,hour:9,count:1214},{day:1,hour:9,count:1205},{day:5,hour:9,count:960},{day:3,hour:9,count:1073},{day:6,hour:9,count:286},{day:7,hour:9,count:152},{day:2,hour:10,count:750},{day:4,hour:10,count:808},{day:1,hour:10,count:610},{day:5,hour:10,count:655},{day:3,hour:10,count:684},{day:6,hour:10,count:482},{day:7,hour:10,count:253},{day:2,hour:11,count:591},{day:4,hour:11,count:593},{day:1,hour:11,count:573},{day:5,hour:11,count:695},{day:3,hour:11,count:622},{day:6,hour:11,count:676},{day:7,hour:11,count:326},{day:2,hour:12,count:653},{day:4,hour:12,count:679},{day:1,hour:12,count:639},{day:5,hour:12,count:736},{day:3,hour:12,count:687},{day:6,hour:12,count:858},{day:7,hour:12,count:402},{day:2,hour:13,count:738},{day:4,hour:13,count:749},{day:1,hour:13,count:631},{day:5,hour:13,count:908},{day:3,hour:13,count:888},{day:6,hour:13,count:880},{day:7,hour:13,count:507},{day:2,hour:14,count:792},{day:4,hour:14,count:847},{day:1,hour:14,count:752},{day:5,hour:14,count:1033},{day:3,hour:14,count:942},{day:6,hour:14,count:983},{day:7,hour:14,count:636},{day:2,hour:15,count:906},{day:4,hour:15,count:1031},{day:1,hour:15,count:954},{day:5,hour:15,count:1199},{day:3,hour:15,count:1014},{day:6,hour:15,count:1125},{day:7,hour:15,count:712},{day:2,hour:16,count:1101},{day:4,hour:16,count:1158},{day:1,hour:16,count:1029},{day:5,hour:16,count:1364},{day:3,hour:16,count:1068},{day:6,hour:16,count:1062},{day:7,hour:16,count:736},{day:2,hour:17,count:1303},{day:4,hour:17,count:1426},{day:1,hour:17,count:1270},{day:5,hour:17,count:1455},{day:3,hour:17,count:1407},{day:6,hour:17,count:883},{day:7,hour:17,count:666},{day:2,hour:18,count:1549},{day:4,hour:18,count:1653},{day:1,hour:18,count:1350},{day:5,hour:18,count:1502},{day:3,hour:18,count:1507},{day:6,hour:18,count:830},{day:7,hour:18,count:652},{day:2,hour:19,count:998},{day:4,hour:19,count:1070},{day:1,hour:19,count:787},{day:5,hour:19,count:1027},{day:3,hour:19,count:1019},{day:6,hour:19,count:575},{day:7,hour:19,count:519},{day:2,hour:20,count:661},{day:4,hour:20,count:756},{day:1,hour:20,count:596},{day:5,hour:20,count:730},{day:3,hour:20,count:648},{day:6,hour:20,count:494},{day:7,hour:20,count:486},{day:2,hour:21,count:431},{day:4,hour:21,count:539},{day:1,hour:21,count:430},{day:5,hour:21,count:509},{day:3,hour:21,count:457},{day:6,hour:21,count:443},{day:7,hour:21,count:421},{day:2,hour:22,count:352},{day:4,hour:22,count:428},{day:1,hour:22,count:362},{day:5,hour:22,count:462},{day:3,hour:22,count:390},{day:6,hour:22,count:379},{day:7,hour:22,count:324},{day:2,hour:23,count:329},{day:4,hour:23,count:381},{day:1,hour:23,count:293},{day:5,hour:23,count:393},{day:3,hour:23,count:313},{day:6,hour:23,count:374},{day:7,hour:23,count:288},{day:2,hour:24,count:211},{day:4,hour:24,count:249},{day:1,hour:24,count:204},{day:5,hour:24,count:417},{day:3,hour:24,count:211},{day:6,hour:24,count:379},{day:7,hour:24,count:203}];
///////////////////////////////////////////////////////////////////////////
//////////////////// Set up and initiate svg containers ///////////////////
///////////////////////////////////////////////////////////////////////////
var days = ["Mo", "Tu", "We", "Th", "Fr", "Sa", "Su"],
times = d3.range(24);
var margin = {
top: 170,
right: 50,
bottom: 70,
left: 50
};
var width = Math.max(Math.min(window.innerWidth, 1000), 500) - margin.left - margin.right - 20,
gridSize = Math.floor(width / times.length),
height = gridSize * (days.length+2);
//SVG container
var svg = d3.select('#trafficAccidents')
.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 + ")");
//Reset the overall font size
var newFontSize = width * 62.5 / 900;
d3.select("html").style("font-size", newFontSize + "%");
///////////////////////////////////////////////////////////////////////////
//////////////////////////// Draw Heatmap /////////////////////////////////
///////////////////////////////////////////////////////////////////////////
//Based on the heatmap example of: http://blockbuilder.org/milroc/7014412
var colorScale = d3.scale.linear()
.domain([0, d3.max(accidents, function(d) {return d.count; })/2, d3.max(accidents, function(d) {return d.count; })])
.range(["#FFFFDD", "#3E9583", "#1F2D86"])
//.interpolate(d3.interpolateHcl);
var dayLabels = svg.selectAll(".dayLabel")
.data(days)
.enter().append("text")
.text(function (d) { return d; })
.attr("x", 0)
.attr("y", function (d, i) { return i * gridSize; })
.style("text-anchor", "end")
.attr("transform", "translate(-6," + gridSize / 1.5 + ")")
.attr("class", function (d, i) { return ((i >= 0 && i <= 4) ? "dayLabel mono axis axis-workweek" : "dayLabel mono axis"); });
var timeLabels = svg.selectAll(".timeLabel")
.data(times)
.enter().append("text")
.text(function(d) { return d; })
.attr("x", function(d, i) { return i * gridSize; })
.attr("y", 0)
.style("text-anchor", "middle")
.attr("transform", "translate(" + gridSize / 2 + ", -6)")
.attr("class", function(d, i) { return ((i >= 8 && i <= 17) ? "timeLabel mono axis axis-worktime" : "timeLabel mono axis"); });
var heatMap = svg.selectAll(".hour")
.data(accidents)
.enter().append("rect")
//----attach data to rect---
.attr("data","This is the data for this cell")
.attr("onmouseover","showData(evt)")
.attr("onmouseout","hideData(evt)")
.attr("x", function(d) { return (d.hour - 1) * gridSize; })
.attr("y", function(d) { return (d.day - 1) * gridSize; })
.attr("class", "hour bordered")
.attr("width", gridSize)
.attr("height", gridSize)
.style("stroke", "white")
.style("stroke-opacity", 0.6)
.style("fill", function(d) { return colorScale(d.count); });
//Append title to the top
svg.append("text")
.attr("class", "title")
.attr("x", width/2)
.attr("y", -90)
.style("text-anchor", "middle")
.text("Number of Traffic accidents per Day & Hour combination");
svg.append("text")
.attr("class", "subtitle")
.attr("x", width/2)
.attr("y", -60)
.style("text-anchor", "middle")
.text("The Netherlands | 2014");
//Append credit at bottom
svg.append("text")
.attr("class", "credit")
.attr("x", width/2)
.attr("y", gridSize * (days.length+1) + 80)
.style("text-anchor", "middle")
.text("Based on Miles McCrocklin's Heatmap block");
///////////////////////////////////////////////////////////////////////////
//////////////// Create the gradient for the legend ///////////////////////
///////////////////////////////////////////////////////////////////////////
//Extra scale since the color scale is interpolated
var countScale = d3.scale.linear()
.domain([0, d3.max(accidents, function(d) {return d.count; })])
.range([0, width])
//Calculate the variables for the temp gradient
var numStops = 10;
countRange = countScale.domain();
countRange[2] = countRange[1] - countRange[0];
countPoint = [];
for(var i = 0; i < numStops; i++) {
countPoint.push(i * countRange[2]/(numStops-1) + countRange[0]);
}//for i
//Create the gradient
svg.append("defs")
.append("linearGradient")
.attr("id", "legend-traffic")
.attr("x1", "0%").attr("y1", "0%")
.attr("x2", "100%").attr("y2", "0%")
.selectAll("stop")
.data(d3.range(numStops))
.enter().append("stop")
.attr("offset", function(d,i) {
return countScale( countPoint[i] )/width;
})
.attr("stop-color", function(d,i) {
return colorScale( countPoint[i] );
});
///////////////////////////////////////////////////////////////////////////
////////////////////////// Draw the legend ////////////////////////////////
///////////////////////////////////////////////////////////////////////////
var legendWidth = Math.min(width*0.8, 400);
//Color Legend container
var legendsvg = svg.append("g")
.attr("class", "legendWrapper")
.attr("transform", "translate(" + (width/2) + "," + (gridSize * days.length + 40) + ")");
//Draw the Rectangle
legendsvg.append("rect")
.attr("class", "legendRect")
.attr("x", -legendWidth/2)
.attr("y", 0)
//.attr("rx", hexRadius*1.25/2)
.attr("width", legendWidth)
.attr("height", 10)
.style("fill", "url(#legend-traffic)");
//Append title
legendsvg.append("text")
.attr("class", "legendTitle")
.attr("x", 0)
.attr("y", -10)
.style("text-anchor", "middle")
.text("Number of Accidents");
//Set scale for x-axis
var xScale = d3.scale.linear()
.range([-legendWidth/2, legendWidth/2])
.domain([ 0, d3.max(accidents, function(d) { return d.count; })] );
//Define x-axis
var xAxis = d3.svg.axis()
.orient("bottom")
.ticks(5)
//.tickFormat(formatPercent)
.scale(xScale);
//Set up X axis
legendsvg.append("g")
.attr("class", "axis")
.attr("transform", "translate(0," + (10) + ")")
.call(xAxis);
//--show/hide data---
function showData(evt)
{
var target=evt.target
target.setAttribute("opacity",".8")
//---locate dataDiv near cursor--
var x = evt.clientX;
var y = evt.clientY;
//---scrolling page---
var offsetX=window.pageXOffset
var offsetY=window.pageYOffset
dataDiv.style.left=10+x+offsetX+"px"
dataDiv.style.top=20+y+offsetY+"px"
//---data--
var data=target.getAttribute("data")
//---format as desired---
var html=data
dataDiv.innerHTML=html
dataDiv.style.visibility="visible"
}
function hideData(evt)
{
dataDiv.style.visibility="hidden"
var target=evt.target
target.removeAttribute("opacity")
}<head>
<meta charset="utf-8">
<!-- D3.js -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js" charset="utf-8"></script>
<!-- Google Font -->
<link href='http://fonts.googleapis.com/css?family=Open+Sans:300,400' rel='stylesheet' type='text/css'>
<style>
html { font-size: 62.5%; }
body {
font-size: 1rem;
font-family: 'Open Sans', sans-serif;
font-weight: 400;
fill: #8C8C8C;
text-align: center;
}
.timeLabel, .dayLabel {
font-size: 1.6rem;
fill: #AAAAAA;
font-weight: 300;
}
text.axis-workweek, text.axis-worktime {
fill: #404040;
font-weight: 400;
}
.title {
font-size: 2.8rem;
fill: #4F4F4F;
font-weight: 300;
}
.subtitle {
font-size: 1.4rem;
fill: #AAAAAA;
font-weight: 300;
}
.credit {
font-size: 1.2rem;
fill: #AAAAAA;
font-weight: 400;
}
.axis path, .axis tick, .axis line {
fill: none;
stroke: none;
}
text {
font-size: 1.2rem;
fill: #AAAAAA;
font-weight: 400;
}
.legendTitle {
font-size: 1.6rem;
fill: #4F4F4F;
font-weight: 300;
}
</style>
</head>
<body>
<div id="trafficAccidents"></div>
<div id=dataDiv style='box-shadow: 4px 4px 4px #888888;-webkit-box-shadow:2px 3px 4px #888888;padding:2px;position:absolute;top:0px;left:0px;visibility:hidden;background-color:linen;border: solid 1px black;border-radius:5px;'></div>
</body>
答案 1 :(得分：0)
我认为你可能会让这个过于复杂。
尝试使用foxToolTip.js
https://github.com/MichaelRFox/foxToolTip.jS
创建独特的“我”后，只需使用.each方法添加唯一的工具提示即可。