I have been trying to render a simple two value pie chart using D3.JS v5 in the lower right corner to no avail. Can someone please assist me with this - the code can be found here:
Codepen
<body>
<div id = "orgChart"></div>
<div id = "mapChart"></div>
<div id = "pieChart"></div>
<script>
/******************************************************************************
Pie Chart
******************************************************************************/
function makePie() {
var widthPie = (window.innerWidth * 0.3) ,
heightPie = (window.innerHeight * 0.3);
var data = [
{name: "Males", count: 43, percent: 61 }
, {name: "Females", count: 27, percent: 39}
];
var pie = d3.pie().value(d=>d.count).padAngle(0.025)(data);
var arcMkr = d3.arc().innerRadius(20).outerRadius(35)
.cornerRadius(4);
var scC = d3.scaleOrdinal(d3.schemePastel1)
.domain(pie.map(d=>d.index));
var g = d3.select("#pieChart")
.append("g").attr("transform", "translate(widthPie/2, heightPie/2)");
g.selectAll("path.x").data(pie).enter().append("path")
.attr("d", arcMkr)
.attr("fill", d=> scC(d.index)).attr("stroke", "grey");
g.selectAll("text.x" ).data( pie ).enter().append( "text")
.text(d => d.data.name +": " + d.data.percent + "%")
.attr("x", d=>arcMkr.innerRadius(20).centroid(d)[0])
.attr("y", d=>arcMkr.innerRadius(20).centroid(d)[1])
.attr("font-family", "sans-serif").attr( "font-size", 8)
.attr("text-anchor", "middle")
;
}
makePie();
</script>
As #Tom Shanley has indicated in the comments, the reason of why your pie chart is not rendered as expected is because you need to create a SVG first.
Notice that I've also changed some CSS properties of #pieChart for improving the snippet visibility, although it is not necessary for your purposes.
<!DOCTYPE html>
<html lang = 'en'>
<head>
<meta charset = 'utf-8'>
<meta name = 'viewport' content = 'width = device-width, initial-scale = 1.0'>
<meta http-equiv = 'X-UA-Compatible' content = 'ie=edge'>
<meta name = 'author' content = "Tom Bellmer">
<meta name = 'date.created' content="03/05/2020">
<!-- load the d3.js library -->
<script src="https://d3js.org/d3.v5.min.js"></script>
<title>Org Chart</title>
<style>
body{
background-color: #faf2e4;
font-family: sans-serif;
font-size: 1.2em;
}
text{font-size: .6em}
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 1px;
}
.node text {
font: 9px sans-serif;
font-weight: normal;
}
.link {
fill: none;
stroke: #ccc;
stroke-width: 1px;
}
#orgChart{
position:absolute;
top: 10px;
left: 10px;
width: 65%;
height: 85%;
}
#mapChart{
position:absolute;
top: 10px;
left: 66%;
width: 34%;
height: 50%;
}
#pieChart{
position:absolute;
top: 51%;
left: 66%;
width: 34%;
height: 55%;
background-color: crimson;
}
circle {
/* fill: #FF8533; */
fill: steelblue;
fill-opacity: .8;
stroke: #fff;
}
circle:hover { fill: red;}
div.tooltip {
position: absolute;
text-align: center;
width: 130px;
height: 14px;
padding: 2px;
font: 11px sans-serif;
background: dodgerblue;
color: white;
border: 0px;
pointer-events: none;
}
svg g{
fill: white;
stroke: black;
}
svg text{fill: black;}
</style>
</head>
<body>
<div id = "orgChart"></div>
<div id = "mapChart"></div>
<div id = "pieChart"></div>
<script>
/******************************************************************************
Pie Chart
******************************************************************************/
function makePie() {
var widthPie = (window.innerWidth * 0.5) ,
heightPie = (window.innerHeight * 0.5);
var data = [
{name: "Males", count: 43, percent: 61 },
{name: "Females", count: 27, percent: 39}
];
var pie = d3.pie().value(d=>d.count).padAngle(0.025)(data);
var arcMkr = d3.arc().innerRadius(20).outerRadius(35)
.cornerRadius(4);
var scC = d3.scaleOrdinal(d3.schemePastel1)
.domain(pie.map(d=>d.index));
// Modified ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
var svg = d3.select("#pieChart")
.append("svg")
.attr("width", widthPie)
.attr("height", heightPie);
var g = svg.append("g").attr("transform", `translate(${widthPie/2}, ${heightPie/2})`);
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
g.selectAll("path.x").data(pie).enter().append("path")
.attr("d", arcMkr)
.attr("fill", d=> scC(d.index)).attr("stroke", "grey");
g.selectAll("text.x" ).data( pie ).enter().append( "text")
.text(d => d.data.name +": " + d.data.percent + "%")
.attr("x", d=>arcMkr.innerRadius(20).centroid(d)[0])
.attr("y", d=>arcMkr.innerRadius(20).centroid(d)[1])
.attr("font-family", "sans-serif").attr( "font-size", 8)
.attr("text-anchor", "middle");
}
makePie();
</script>
</body>
Related
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>Store Location</title>
<script src="https://d3js.org/d3.v3.min.js"></script>
<script src="https://d3js.org/topojson.v1.min.js"></script>
<script src="http://d3js.org/queue.v1.min.js"></script>
<style>
* {
margin: 0;
padding: 0;
}
.boundary {
fill: none;
stroke: #dfdfdf;
stroke-linejoin: round;
}
#map {
text-align: center;
}
circle {
fill: blue;
opacity:.9;
}
text{
font-family: 'PT Sans', sans-serif;
font-weight: 300;
font-size: 12px;
z-index: 900;
}
#tooltip {
position: absolute;
width: 200px;
height: auto;
padding: 10px;
background-color: #ff9436;
-webkit-border-radius: 10px;
-moz-border-radius: 10px;
border-radius: 10px;
-webkit-box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
pointer-events: none;
}
#tooltip.hidden {
display: none;
}
#tooltip p {
margin: 0;
font-family: sans-serif;
font-size: 16px;
line-height: 20px;
}
</style>
</head>
<body>
<div id="tooltip" >
<p><strong>Store name and address:</strong></p>
<p><span id="value"></span></p>
<svg id="spendChart"></svg>
</div>
<div id="map"></div>
<script>
var height = 600;
var width = 900, centered;
var projection = d3.geo.albersUsa()
.scale(1200)
.translate([width/2, height/2]);
console.log("working..!!!")
var path = d3.geo.path().projection(projection);
var svg = d3.select("#map")
.append("svg")
.attr("width", width)
.attr("height", height);
var map = svg.append("g")
.attr("class", "boundary");
var usa, usData, spendData, locationData;
var monthParser = d3.time.format("%b");
d3.select("#tooltip").classed("hidden", true);
queue()
.defer(d3.json, 'us.json')
.defer(d3.json, 'newstorelocations.json')
.defer(d3.json, 'newstorespend.json')
.await(ready);
function onHover(location) {
var pos = projection([location.lon, location.lat]),
html = location.name +
"<br />located at: <br />" +
location.AddressLine1 +
",<br />" +
location.City +
"<br />" +
location.StateCode;
d3.select("#value").html(html);
d3.select("#tooltip").attr("left", pos[0] + "px").attr("top", pos[1] + "px").classed("hidden", false);
d3.select(this).style("fill", "red");
var locationSpendData = spendData.filter(function(d) { return d.StoreDescription == location.StoreDescription; });
locationSpendData.forEach(function(d) {
d.month = monthParser.parse(d.MonthName);
});
var chartHeight = 150, chartWidth = 200,
x = d3.time.scale().domain(d3.extent(locationSpendData, function(d) { return d.month; }))
.range([0, chartWidth]),
y = d3.scale.linear().domain([0, d3.max(locationSpendData, function(d) { return d.TotalSpend; })])
.range([chartHeight, 0]);
chart = d3.select("svg#spendChart").attr("height", chartHeight)
.attr("width", chartWidth);
chart.selectAll("rect.bar")
.data(locationSpendData)
.enter().append("rect")
.attr("class", "bar")
.attr("x", function(d) { return x(d.month); })
.attr("y", function(d) { return y(d.TotalSpend); })
.attr("width", chartWidth / locationSpendData.length)
.attr("height", function(d) { return height - y(d.TotalSpend); });
}
function offHover() {
d3.select(this).style("fill", "blue");
d3.select("#spendChart").html("");
d3.select("#tooltip").classed("hidden", true);
}
function ready(error, us, locations, spend) {
usData = us;
locationData = locations;
spendData = spend;
usa = map.selectAll('path')
.data(topojson.feature(usData, usData.objects.states).features);
usa.enter()
.append('path')
.attr('d', path)
.attr('fill', 'gray');
svg.selectAll('circle')
.data(locationData)
.enter()
.append('circle')
.attr('cx', function(d) {return projection([d.lon, d.lat])[0]})
.attr('cy', function(d) {return projection([d.lon, d.lat])[1]})
.attr('r', 4)
.on("mouseover", onHover)
.on("mouseout", offHover);
};
</script>
</body>
</html>
i am creating USA map and location of store on it...
but i getting an error as shown in the image that
i added to us.json and to another .json file for location ...
but no output is getting shown in browser.
i am getting error like this.. .
Uncaught TypeError: Cannot read property 'objects' of undefined
For example I have svg container with 800px width and 600px height.
I wand to add a tick every 40px, so it will be 20 ticks on x-coordinate (with numbers from 0 to 20) and 15 ticks on y-coordinate (with numbers from 0 to 15).
here is an image
How can I do it? I use d3.js v5
There is my code (with zooming and dragging):
<!DOCTYPE html>
<meta charset="utf-8">
<style>
* {
margin: 0;
padding: 0;
}
html, body {
width: 100%;
height: 100%;
border: 0;
overflow: hidden;
display: block;
}
.box, .reset, .x, .y, .board {
display: block;
}
.box {
position: relative;
width: 100%;
height: 100%;
}
.reset {
position: absolute;
left: 0;
top: 0;
width: 20px;
height: 20px;
border-right: 1px solid #E5E5E5;
border-bottom: 1px solid #E5E5E5;
background-color: #FCFCFC;
z-index: 100;
}
.x {
position: absolute;
left: 20px;
top: 0;
width: calc(100% - 20px);
height: 20px;
background-color: #FCFCFC;
}
.y {
position: absolute;
left: 0;
top: 20px;
width: 20px;
height: calc(100% - 20px);
background-color: #FCFCFC;
}
.board {
position: absolute;
left: 0;
top: 0;
width: calc(100% - 20px);
height: calc(100% - 20px);
}
#board {
padding-left: 20px;
padding-top: 20px;
}
body {
font: 10px sans-serif;
shape-rendering: crispEdges;
background-color: #E5E5E5;
}
path.domain {
stroke: none;
}
g.tick line {
stroke: #D3D3D3;
stroke-width: 2;
}
g.tick text {
fill: #C4C4C4;
}
</style>
<body>
<div class="box">
<div class="reset"></div>
<div class="x"></div>
<div class="y"></div>
<div class="board"></div>
</div>
<script src="https://d3js.org/d3.v5.min.js"></script>
<script>
function isInteger(num) {
return (num ^ 0) === num;
}
var width = window.innerWidth
|| document.documentElement.clientWidth
|| document.body.clientWidth;
var height = window.innerHeight
|| document.documentElement.clientHeight
|| document.body.clientHeight;
var svg = d3.select(".board").append("svg")
.attr("id", "board")
.attr("width", width - 20)
.attr("height", height - 20)
// .append("g");
var zoom = d3.zoom()
// .scaleExtent([1, 32])
.on("zoom", zoomed);
svg.call(zoom);
x_scale = d3.scaleLinear().domain([0, 20]).range([0, width]);
y_scale = d3.scaleLinear().domain([0, 20]).range([0, height]);
var x_axis = d3.axisTop(x_scale)
.ticks(?) //I dont know what do I have to write
.tickFormat(function(d, i) {
if (isInteger(d)) {
return d;
}
})
.tickSize(5)
var x_axis_group = svg.append("g")
.attr("transform", "translate(20, 0)")
.call(x_axis);
var y_axis = d3.axisLeft(y_scale)
.ticks(?) /I dont know what do I have to write
.tickFormat(function(d, i) {
if (isInteger(d)) {
return d;
}
})
.tickSize(5);
var y_axis_group = svg.append("g")
.attr("transform", "translate(0, 20)")
.call(y_axis);
function zoomed() {
var new_x_scale = d3.event.transform.rescaleX(x_scale);
var new_y_scale = d3.event.transform.rescaleY(y_scale);
x_axis_group.call(x_axis.scale(new_x_scale));
y_axis_group.call(y_axis.scale(new_y_scale));
}
</script>
In my project, I am trying to display India map using d3 and GeoJSON. It works properly, but I am finding difficulties to display each state name on top of the respective state. How to find the centroid of each state.
Please help me to find out, Thanks in advance...,
In the below image, it is displaying at top left corner.
Index.html
<!DOCTYPE html>
<html>
<meta charset="utf-8">
<style>
.state {
fill: none;
stroke: #a9a9a9;
stroke-width: 1;
}
.state:hover {
fill-opacity: 0.5;
}
#tooltip {
position: absolute;
text-align: center;
padding: 20px;
margin: 10px;
font: 12px sans-serif;
background: lightsteelblue;
border: 1px;
border-radius: 2px;
pointer-events: none;
}
#tooltip h4 {
margin: 0;
font-size: 14px;
}
#tooltip {
background: rgba(0, 0, 0, 0.9);
border: 1px solid grey;
border-radius: 5px;
font-size: 12px;
width: auto;
padding: 4px;
color: white;
opacity: 0;
}
#tooltip table {
table-layout: fixed;
}
#tooltip tr td {
padding: 0;
margin: 0;
}
#tooltip tr td:nth-child(1) {
width: 50px;
}
#tooltip tr td:nth-child(2) {
text-align: center;
}
</style>
<body>
<div id="tooltip"></div>
<!-- div to hold tooltip. -->
<div style="height: 600px;" id="statesvg"></div>
<!-- svg to hold the map. -->
<!-- <script src="indiaState.js"></script> -->
<!-- creates india State. -->
<script src="d3.v3.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
function tooltipHtml(n, id, d) { /* function to create html content string in tooltip div. */
return "<h4>" + id + "</h4>" +
"<h4>" + n + "</h4>";
}
function getRandomColor() {
var letters = '0123456789ABCDEF';
var color = '#';
for (var i = 0; i < 6; i++) {
color += letters[Math.floor(Math.random() * 16)];
}
return color;
}
var sampleData = {}; /* Sample random data. */
["AP", "AR", "AS", "BR", "CT", "DL", "GA", "GJ", "HR", "HP", "JK", "JH", "KA", "KL", "MP", "MH", "MN", "ML", "MZ", "NL", "OR", "PB", "RJ", "SK", "TN", "TR", "UP", "UT", "WB"]
.forEach(function(d) {
var low = Math.round(100 * Math.random());
sampleData[d] = { color: getRandomColor()};
});
/* draw states on id #statesvg */
//iStates.draw("#statesvg", sampleData, tooltipHtml);
d3.select(self.frameElement).style("height", "600px");
d3.json("county.json", function(json) {
console.log(json)
var projection = d3.geo.mercator()
.scale(1)
.translate([0, 0]);
var path = d3.geo.path()
.projection(projection);
function mouseOver(d) {
d3.select("#tooltip").transition().duration(200).style("opacity", .9);
d3.select("#tooltip").html(tooltipHtml(d.n, d.id, sampleData[d.id]))
.style("left", (d3.event.layerX) + "px")
.style("top", (d3.event.layerY) + "px");
}
function mouseOut() {
d3.select("#tooltip").transition().duration(500).style("opacity", 0);
}
function Click(d) {
delete d.d
console.log(d)
}
var svg = d3.select("#statesvg")
.append("svg")
.attr("width", "100%")
.attr("height", "100%")
.append("g");
svg.selectAll(".state")
.data(json)
.enter()
.append("path")
.attr("class", "state")
.attr("d", function(d) {
return d.d;
})
.style("fill", function(d) {
return sampleData[d.id].color;
})
.on("mousemove", mouseOver).on("mouseout", mouseOut).on("click", Click);
svg.selectAll("text")
.data(json)
.enter()
.append("text")
.attr("fill", "black")
.attr("x", function(d) {
return path.centroid(d.d)[0];
})
.attr("y", function(d) {
return path.centroid(d.d)[1];
})
.attr("text-anchor", "middle")
.attr("dy", ".35em")
.text(function(d) {
return d.id;
});
});
</script>
</body>
</html>
I tried using below code, but its giving both cordinates as NaN, how to solve this...
var projection = d3.geo.mercator()
.scale(1)
.translate([0, 0]);
var path = d3.geo.path()
.projection(projection);
Since your json is returning the actual path d element and not topojson, I'd just use getBBox on the path directly. I also simplified your selections to group the path and the text:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<script data-require="d3#3.5.17" data-semver="3.5.17" src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.js"></script>
<style>
.state {
fill: none;
stroke: #a9a9a9;
stroke-width: 1;
}
.state:hover {
fill-opacity: 0.5;
}
#tooltip {
position: absolute;
text-align: center;
padding: 20px;
margin: 10px;
font: 12px sans-serif;
background: lightsteelblue;
border: 1px;
border-radius: 2px;
pointer-events: none;
}
#tooltip h4 {
margin: 0;
font-size: 14px;
}
#tooltip {
background: rgba(0, 0, 0, 0.9);
border: 1px solid grey;
border-radius: 5px;
font-size: 12px;
width: auto;
padding: 4px;
color: white;
opacity: 0;
}
#tooltip table {
table-layout: fixed;
}
#tooltip tr td {
padding: 0;
margin: 0;
}
#tooltip tr td:nth-child(1) {
width: 50px;
}
#tooltip tr td:nth-child(2) {
text-align: center;
}
</style>
</head>
<body>
<div id="tooltip"></div>
<!-- div to hold tooltip. -->
<div style="height: 600px;" id="statesvg"></div>
<!-- svg to hold the map. -->
<!-- <script src="indiaState.js"></script> -->
<!-- creates india State. -->
<!--<script src="d3.v3.min.js"></script>-->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
function tooltipHtml(n, id, d) { /* function to create html content string in tooltip div. */
return "<h4>" + id + "</h4>" +
"<h4>" + n + "</h4>";
}
function getRandomColor() {
var letters = '0123456789ABCDEF';
var color = '#';
for (var i = 0; i < 6; i++) {
color += letters[Math.floor(Math.random() * 16)];
}
return color;
}
var sampleData = {}; /* Sample random data. */
["AP", "AR", "AS", "BR", "CT", "DL", "GA", "GJ", "HR", "HP", "JK", "JH", "KA", "KL", "MP", "MH", "MN", "ML", "MZ", "NL", "OR", "PB", "RJ", "SK", "TN", "TR", "UP", "UT", "WB"]
.forEach(function(d) {
var low = Math.round(100 * Math.random());
sampleData[d] = { color: getRandomColor()};
});
/* draw states on id #statesvg */
//iStates.draw("#statesvg", sampleData, tooltipHtml);
d3.select(self.frameElement).style("height", "600px");
d3.json("https://api.myjson.com/bins/l36bq", function(json) {
//console.log(json)
var projection = d3.geo.mercator()
.scale(1)
.translate([0, 0]);
var path = d3.geo.path()
.projection(projection);
function mouseOver(d) {
d3.select("#tooltip").transition().duration(200).style("opacity", .9);
d3.select("#tooltip").html(tooltipHtml(d.n, d.id, sampleData[d.id]))
.style("left", (d3.event.layerX) + "px")
.style("top", (d3.event.layerY) + "px");
}
function mouseOut() {
d3.select("#tooltip").transition().duration(500).style("opacity", 0);
}
function Click(d) {
delete d.d
console.log(d)
}
var svg = d3.select("#statesvg")
.append("svg")
.attr("width", "100%")
.attr("height", "100%")
.append("g");
var eS = svg.selectAll(".state")
.data(json)
.enter()
.append("g");
eS.append("path")
.attr("class", "state")
.attr("d", function(d) {
return d.d;
})
.style("fill", function(d) {
return sampleData[d.id].color;
})
.on("mousemove", mouseOver).on("mouseout", mouseOut).on("click", Click)
eS.append("text")
.attr("fill", "black")
.attr("transform", function(d) {
var bbox = this.previousSibling.getBBox();
return "translate(" + (bbox.x + bbox.width/2) + "," + (bbox.y + bbox.height/2) + ")";
})
.attr("text-anchor", "middle")
.attr("dy", ".35em")
.text(function(d) {
return d.id;
});
});
</script>
</body>
</html>
I've copied the code below from the example provided here https://scrimba.com/casts/cast-1953
However, no graph is shown. I also get no errors in the console.
When I enter d3 in the console an object is returned, so d3 is found.
What am I missing?
<head>
<script type="text/javascript" src="https://d3js.org/d3.v4.min.js"></script>
<style type="text/css">
.chart div {
font: 10px sans-serif;
background-color: steelblue;
text-align: right;
padding: 3px;
margin: 1px;
color: white;
}
</style>
<script type="text/javascript">
var data = [30, 86, 168, 281, 303, 365];
d3.select(".chart")
.selectAll("div")
.data(data)
.enter()
.append("div")
.style("width", function (d) { return d + "px"; })
.text(function (d) { return d; });
</script>
</head>
<body>
<div class="chart"></div>
</body>
Instead using script in head, try to use at the bottom of the page or use when page is ready.
<head>
<script type="text/javascript" src="https://d3js.org/d3.v4.min.js"></script>
<style type="text/css">
.chart div {
font: 10px sans-serif;
background-color: steelblue;
text-align: right;
padding: 3px;
margin: 1px;
color: white;
}
</style>
<div class="chart"></div>
<script type="text/javascript">
var data = [30, 86, 168, 281, 303, 365];
d3.select(".chart")
.selectAll("div")
.data(data)
.enter()
.append("div")
.style("width", function (d) { return d + "px"; })
.text(function (d) { return d; });
</script>
You must place the body before the script like so:
<body>
<div class="chart"></div>
</body>
<script type="text/javascript" src="https://d3js.org/d3.v4.min.js"></script>
<style type="text/css">
.chart div {
font: 10px sans-serif;
background-color: steelblue;
text-align: right;
padding: 3px;
margin: 1px;
color: white;
}
</style>
<script type="text/javascript">
var data = [30, 86, 168, 281, 303, 365];
d3.select(".chart")
.selectAll("div")
.data(data)
.enter()
.append("div")
.style("width", function(d) {
return d + "px";
})
.text(function(d) {
return d;
});
</script>
I want to make a similar tooltip like this example but in my chart the tooltips do not show at the end of each bar. I was trying to fix it by adjusting offset([-10, 350]). I can see the tooltips moved but not all of them appear at the end. Anyone can tell me how to fix it? Thanks a lot!
<!DOCTYPE html>
<html>
<style>
.axis {
font-family: Helvetica;
font-size: 1em;
font-weight: bold;
color: #444444;
}
.axis path,
.axis line {
fill: none;
stroke: white;
shape-rendering: crispEdges;
}
.x.axis path {
display: none;
}
.bar:hover {
opacity: 0.7;
}
.d3-tip {
line-height: 1;
font-weight: bold;
padding: 12px;
background: #aaaaaa;
color: #aa123f;
border-radius: 6px;
font-family: Helvetica;
}
/* Creates a small triangle extender for the tooltip */
.d3-tip:after {
box-sizing: border-box;
display: inline;
font-size: 10px;
width: 100%;
line-height: 1;
color: #aaaaaa;
content: "\25BC";
position: absolute;
text-align: center;
}
/* Style northward tooltips differently */
.d3-tip.n:after {
margin: -1px 0 0 0;
top: 100%;
left: 0;
}
</style>
<head>
<!-- D3.js -->
<script src='http://d3js.org/d3.v3.min.js'></script>
<script src="http://labratrevenge.com/d3-tip/javascripts/d3.tip.v0.6.3.js"></script>
</head>
<body>
<div id="barChart"></div>
<script>
var data = [
{y:"Group1", x: 3.5},
{y:"Group2", x: 4.5},
{y:"Group3", x: 3.8}
];
var margin = {top: 40, right: 20, bottom: 30, left: 80},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var x = d3.scale.
linear().
range([0, width]);
var y = d3.scale.
ordinal().
rangeRoundBands([0, height], 0.3);
var xAxis = d3.
svg.
axis().
scale(x).
orient("bottom");
var yAxis = d3.svg.axis().
scale(y).
orient("left");
x.domain([1, 5]);
y.domain(data.map(function(d) { return d.y; }));
var tipBars = d3.tip().
attr('class', 'd3-tip').
offset([-10, 350]).
html(function(d) {
return '<strong style="color:grey">Result:</strong> <span style="color:grey">' + d.x +
'</span>';
});
var svg = d3.select("#barChart").
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 + ")");
var plot = svg.
append("g").
attr('transform', 'translate(' + 0 + ',' + 0 + ')');
var plotBars = plot.selectAll("g").
data(data).
enter().
append("g").
attr('class', 'bars');
svg.call(tipBars);
var bars = plotBars.
append("rect").
attr("x", function(d) { return 0; }).
attr("width",function(d) { return x(d.x);}).
attr("y", function(d) { return y(d.y);}).
attr("height", y.rangeBand()).
attr("class", "bar").
attr("fill","grey").
on('mouseover', tipBars.show).
on('mouseout', tipBars.hide);
svg.append("g").
attr("class", "x axis").
style('font-family', ' Helvetica').
call(xAxis);
svg.append("g").
attr("class", "y axis").
style('font-family', ' Helvetica').
call(yAxis);
</script>
</body>
</html>
Use d3.tip.direction() to set the positioning. Docs
var tipBars = d3.tip()
.attr('class', 'd3-tip')
.direction('e')
.html(function(d) {
return '<strong style="color:grey">Result:</strong> <span style="color:grey">' + d.x +
'</span>';
});