How to use 'click, mouseover, mousedown' and so on in d3 v4 - javascript

I am working on this force graph in D3 v4.
When a user move his mouse, the color of the bar will be changed. In d3 v3, my code can work very well. But when I use it in d3 v4, it doesn't work. In the official introduction, I can use like this:
selection.on("mousedown touchstart", function() {
console.log(d3.event.type);
});
But it still can't work.
Here is my code:
<html>
<head>
<meta charset="utf-8">
<title>a bar</title>
</head>
<style>
.axis path,
.axis line{
fill: none;
stroke: black;
shape-rendering: crispEdges;
}
.axis text {
font-family: sans-serif;
font-size: 11px;
}
.MyRect {
fill: steelblue;
}
.MyText {
fill: white;
text-anchor: middle;
}
</style>
<body>
<script src="http://d3js.org/d3.v4.min.js" charset="utf-8"></script>
<script>
var width=400;
var height=400;
var svg=d3.select("body")
.append("svg")
.attr("width",width)
.attr("height",height);
var padding = {left:30, right:30, top:20, bottom:20};
var dataset=[10,20,30,40,33,24,12,5];
var xScale = d3.scaleBand()
.domain(d3.range(dataset.length))
.range([0, width-padding.left-padding.right])
.padding(0.2); //some value here
var yScale = d3.scaleLinear()
.domain([0,d3.max(dataset)])
.range([height-padding.top-padding.bottom,0]);
var xAxis = d3.axisBottom()
.scale(xScale);
var yAxis = d3.axisLeft()
.scale(yScale);
var rectPadding=4;
var rects = svg.selectAll(".MyRect")
.data(dataset)
.enter()
.append("rect")
.attr("class","MyRect")
.attr("transform","translate(" + padding.left + "," + padding.top + ")")
.attr("x", function(d,i){
return xScale(i) + rectPadding/2;
} )
.attr("y",function(d){
return yScale(d);
})
.attr("width", xScale.bandwidth() - rectPadding )
.attr("height", function(d){
return height - padding.top - padding.bottom - yScale(d);
})
.attr("fill","steelblue")
.on("mouseover",function(d,i){
d3.select(this)
.attr("fill","yellow");
})
.on("mouseout",function(d,i){
d3.select(this)
.transition()
.duration(500)
.attr("fill","steelblue");
});
var texts = svg.selectAll(".MyText")
.data(dataset)
.enter()
.append("text")
.attr("class","MyText")
.attr("transform","translate(" + padding.left + "," + padding.top + ")")
.attr("x", function(d,i){
return xScale(i) + rectPadding/2;
})
.attr("y",function(d){
return yScale(d);
})
.attr("dx",function(){
return (xScale.bandwidth() - rectPadding)/2;
})
.attr("dy",function(d){
return 20;
})
.text(function(d){
return d;
})
svg.append("g")
.attr("class","axis")
.attr("transform","translate(" + padding.left + "," + (height - padding.bottom) + ")")
.call(xAxis);
svg.append("g")
.attr("class","axis")
.attr("transform","translate(" + padding.left + "," + padding.top + ")")
.call(yAxis);
</script>
</body>
</html>
I'm a beginner, could you help me? Or giving me an useful suggestion is also okay. Thankyou!

Registering mouseover and mouseout is same in d3.v4, same as what you are doing.
But instead of using attr:
.on("mouseover",function(d,i){
console.log("hello")
d3.select(this)
.attr("fill","yellow");//it is style not attribute
})
.on("mouseout",function(d,i){
d3.select(this)
.transition()
.duration(500)
.attr("fill","steelblue");//it is style not attribute
});
you should have used style :
.on("mouseover",function(d,i){
console.log("hello")
d3.select(this)
.style("fill","yellow");//it is style
})
.on("mouseout",function(d,i){
d3.select(this)
.transition()
.duration(500)
.style("fill","steelblue");//it is style
});
working code here

Related

why does it fail saying that d3 is not defined when served as string in webbrowser

I am trying to launch a WPF webbrowser from a string. I have a java script file referenced in the head section that points to a file on my drive. It looks good to me but still fails. Any ideas?
String served to webbrowser:
<!DOCTYPE html>
<meta charset="utf - 8">
<head>
<script src="file:///C:/Users/ksobon/AppData/Roaming/Dynamo/Dynamo%20Revit/1.0/packages/extra/d3/d3.v3.min.js"></script>
<link rel="stylesheet" href="file:///C:/Users/ksobon/AppData/Roaming/Dynamo/Dynamo%20Revit/1.0/packages/extra/bootstrap/css/bootstrap.min.css">
<style>
body {
font: 10px Arial;
}
.axis path {
fill: none;
stroke: grey;
shape-rendering: crispEdges;
}
.axis text {
font-family: Arial;
font-size: 10px;
}
.axis line {
fill: none;
stroke: grey;
stroke-width: 1;
shape-rendering: crispEdges;
}
</style>
</head>
<div class="row">
<div class="col-md-12" id="linelinechart1" align="center">
<script>
function renderLineChart() {
var data = [{"name":"24-Apr-07","value":93.24},{"name":"25-Apr-07","value":95.35},{"name":"26-Apr-07","value":98.84},{"name":"27-Apr-07","value":99.92},{"name":"30-Apr-07","value":99.8},{"name":"1-May-07","value":99.47},{"name":"2-May-07","value":100.39},{"name":"3-May-07","value":100.4},{"name":"4-May-07","value":100.81},{"name":"7-May-07","value":103.92},{"name":"8-May-07","value":105.06},{"name":"9-May-07","value":106.88},{"name":"10-May-07","value":107.34},{"name":"11-May-07","value":108.74},{"name":"14-May-07","value":109.36},{"name":"15-May-07","value":107.52},{"name":"16-May-07","value":107.34},{"name":"17-May-07","value":109.44},{"name":"18-May-07","value":110.02},{"name":"21-May-07","value":111.98},{"name":"22-May-07","value":113.54},{"name":"23-May-07","value":112.89},{"name":"24-May-07","value":110.69},{"name":"25-May-07","value":113.62},{"name":"29-May-07","value":114.35},{"name":"30-May-07","value":118.77},{"name":"31-May-07","value":121.19},{"name":"1-Jun-07","value":118.4},{"name":"4-Jun-07","value":121.33}];
var tickValues = data.map(function (d){return d.name;});
var step = Math.floor(tickValues.length / 5);
var indexes = d3.range(0,tickValues.length, step);
if (indexes.indexOf(tickValues.length - 1) == -1){
indexes.push(tickValues.length - 1);
}
var tickArray = d3.permute(tickValues, indexes);
var margin = { top: 20, right: 20, bottom: 30, left: 50 },
width = 547 - margin.left - margin.right,
height = 400 - margin.top - margin.bottom;
var x = d3.scale.ordinal()
.domain(data.map(function (d) { return d.name; }))
.rangePoints([0, width], 2);
var y = d3.scale.linear()
.range([height, 0]);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.tickValues(tickArray);
var yAxis = d3.svg.axis()
.scale(y)
.orient("left");
var line = d3.svg.line()
.x(function (d) { return x(d.name); })
.y(function (d) { return y(d.value); });
var svg = d3.select("#linelinechart1").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 + ")");
data.forEach(function (d) {
d.name = d.name;
d.value = +d.value;});
y.domain([0, 200]);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 6)
.attr("dy", ".71em")
.style("text-anchor", "end")
.text("Label");
svg.append("path")
.datum(data)
.attr("d", line)
.attr("stroke", "#FA0000")
.attr("stroke-width", 2)
.attr("fill", "none");
}
renderLineChart();
</script>
</div>
</div>
Previously the reference to d3.min.js was placed after the <script> tag and before renderLineChart() function call and it worked just fine.
So it appears that the answer is within the string formatting where a space in a file path name was replaced with %20 and rendered such path unreadable. I used Uri.UnescapeDataString() to clean that up and it works great. Thanks!

Mouseover functionality in d3 line chart

Hi I'm trying to get the mouseover function work for my line chart so I can hover over the line chart and see the values of each point. I tried using the mouse function but it didn't work. How can I fix/do this? I also included a picture of the line chart
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Unemployment by Ward Bar Chart</title>
<style type="text/css">
.axis text{
font-family: Arial;
font-size: 13px;
color: #333333;
text-anchor: end;
}
path {
stroke: steelblue;
stroke-width: 2;
fill: none;
}
.axis path,
.axis line {
fill: none;
stroke: grey;
stroke-width: 1;
shape-rendering: crispEdges;
}
.textlabel{
font-family: Arial;
font-size:13px;
color: #333333;
text-anchor: middle;
}
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
// Set the dimensions of the canvas / graph
var margin = {top: 20, right: 0, bottom: 60, left: 60},
width = 475;
height = 350;
padding = 100;
// Adds the svg canvas
var svg = d3.select("body")
.append("svg:svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("viewBox", "0 0 " + width + " " + height);
// Parse the date / time
var parseDate = d3.time.format("%m/%d/%y").parse;
var formatTax = d3.format(",.2f");
// Set the ranges
var x = d3.time.scale()
.range([0, width - margin.right - margin.left], .1)
.nice();
var y = d3.scale.linear()
.range([height - margin.top - margin.bottom, 20])
.nice();
// Define the axes
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.ticks(5);
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.tickFormat(function(d) {return "$" + d + "B"});
// Define the line
var valueline = d3.svg.line()
.x(function(d) { return x(d.Date); })
.y(function(d) { return y(d["Tax Collections"]); });
// Get the data
d3.csv("Yearly Tax Collections.csv", function(error, data) {
data.forEach(function(d) {
d.Date = parseDate(d.Date);
d["Tax Collections"] = formatTax(+d["Tax Collections"]/1000000000);
});
var g = svg.selectAll("g").data(data).enter().append("svg:g")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom);
// Scale the range of the data
x.domain(d3.extent(data, function(d) { return d.Date; }));
y.domain([0, d3.max(data, function(d) { return Math.ceil (d["Tax Collections"]); })
]);
// Add the valueline path and mouseover
svg.append("path")
.attr("class", "line")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.attr("d", valueline(data))
.attr("id", "myPath")
.on("mousemove", mMove)
.append("title");
function mMove(){
var m = d3.mouse(this);
d3.select("#myPath")
.select("title")
.filter(function(d, i)
.attr({
'x':function(d,i) {
return x(d.Date);
},
'y':function(d,i) {
return y(d["Tax Collections"]);
}
})
.text(function(d,i){
return "$" + d["Tax Collections"] + "B";
})
}
// Add the X Axis
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(" + margin.left + "," + (height - margin.bottom) + ")")
.call(xAxis);
// Add the Y Axis
svg.append("g")
.attr("class", "y axis")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.call(yAxis);
// Y-axis labels
svg.append("text")
.attr("text-anchor", "middle")
.style("font-size", "13px")
.style("color", "#333333")
.attr("transform", "translate ("+ (padding/4) + "," +(height/2)+") rotate(-90)")
.text("Tax Revenue")
.style("font-family", "Arial");
// X-axis labels
svg.append("text")
.attr("text-anchor", "middle")
.style("font-size", "13px")
.style("color", "#333333")
.attr("transform", "translate("+ (width/2) + "," +(height-(padding/4)) + ")")
.text("Fiscal Year")
.style("font-family", "Arial");
//source
svg.append("text")
.attr("text-anchor", "middle")
.style("font-size", "13px")
.style("color", "#333333")
.attr("transform", "translate("+ (width/4.5) + "," +(height/1) + ")")
.text("Source: DC OCFO")
.style("font-family", "Arial")
//title for the chart
svg.append("text")
.attr("text-anchor", "middle")
.style("font-size", "16px")
.style("color", "#333333")
.attr("transform", "translate("+ (width/3) + "," +(height/30) + ")")
.text("DC Total Tax Revenues by Fiscal Year")
.style("font-family", "Arial");
svg.append("text")
.attr("text-anchor", "left")
.style("font-size", "13px")
.style("color", "#333333")
.attr("transform", "translate("+ (width/20) + "," +(height/12) + ")")
.text("2000 to 2015")
.style("font-family", "Arial")
//line labels
svg.append('g')
.classed('labels-group', true)
.selectAll('text')
.data(data)
.enter()
.append('text')
.filter(function(d, i) { return i === 0||i === (data.length - 1) })
.classed('label',true)
.classed('label',true)
.attr({
'x':function(d,i) {
return x(d.Date);
},
'y':function(d,i) {
return y(d["Tax Collections"]);
}
})
.text(function(d,i){
return "$" + d["Tax Collections"] + "B";
})
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
});
</script>
</body>
Thank you in avance!

Code to add mouseover functionality to line chart

Hi I'm trying to get the mouseover function work for my line chart so I can hover over the line chart and see the values of each point. I tried using the mouse function but it didn't work. How can I do this? I also included a picture of the line chart
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Unemployment by Ward Bar Chart</title>
<style type="text/css">
.axis text{
font-family: Arial;
font-size: 13px;
color: #333333;
text-anchor: end;
}
path {
stroke: steelblue;
stroke-width: 2;
fill: none;
}
.axis path,
.axis line {
fill: none;
stroke: grey;
stroke-width: 1;
shape-rendering: crispEdges;
}
.textlabel{
font-family: Arial;
font-size:13px;
color: #333333;
text-anchor: middle;
}
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
// Set the dimensions of the canvas / graph
var margin = {top: 20, right: 0, bottom: 60, left: 60},
width = 475;
height = 350;
padding = 100;
// Adds the svg canvas
var svg = d3.select("body")
.append("svg:svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("viewBox", "0 0 " + width + " " + height);
// Parse the date / time
var parseDate = d3.time.format("%m/%d/%y").parse;
var formatTax = d3.format(",.2f");
// Set the ranges
var x = d3.time.scale()
.range([0, width - margin.right - margin.left], .1)
.nice();
var y = d3.scale.linear()
.range([height - margin.top - margin.bottom, 20])
.nice();
// Define the axes
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.ticks(5);
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.tickFormat(function(d) {return "$" + d + "B"});
// Define the line
var valueline = d3.svg.line()
.x(function(d) { return x(d.Date); })
.y(function(d) { return y(d["Tax Collections"]); });
// Get the data
d3.csv("Yearly Tax Collections.csv", function(error, data) {
data.forEach(function(d) {
d.Date = parseDate(d.Date);
d["Tax Collections"] = formatTax(+d["Tax Collections"]/1000000000);
});
var g = svg.selectAll("g").data(data).enter().append("svg:g")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom);
// Scale the range of the data
x.domain(d3.extent(data, function(d) { return d.Date; }));
y.domain([0, d3.max(data, function(d) { return Math.ceil (d["Tax Collections"]); })
]);
// Add the valueline path and mouseover
svg.append("path")
.attr("class", "line")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.attr("d", valueline(data))
.append("title");
// Add the X Axis
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(" + margin.left + "," + (height - margin.bottom) + ")")
.call(xAxis);
// Add the Y Axis
svg.append("g")
.attr("class", "y axis")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.call(yAxis);
// Y-axis labels
svg.append("text")
.attr("text-anchor", "middle")
.style("font-size", "13px")
.style("color", "#333333")
.attr("transform", "translate ("+ (padding/4) + "," +(height/2)+") rotate(-90)")
.text("Tax Revenue")
.style("font-family", "Arial");
// X-axis labels
svg.append("text")
.attr("text-anchor", "middle")
.style("font-size", "13px")
.style("color", "#333333")
. attr("transform", "translate("+ (width/2) + "," +(height-(padding/4)) + ")")
.text("Fiscal Year")
.style("font-family", "Arial");
//source
svg.append("text")
.attr("text-anchor", "middle")
.style("font-size", "13px")
.style("color", "#333333")
.attr("transform", "translate("+ (width/4.5) + "," +(height/1) + ")")
.text("Source: DC OCFO")
.style("font-family", "Arial")
//title for the chart
svg.append("text")
.attr("text-anchor", "middle")
.style("font-size", "16px")
.style("color", "#333333")
.attr("transform", "translate("+ (width/3) + "," +(height/30) + ")")
.text("DC Total Tax Revenues by Fiscal Year")
.style("font-family", "Arial");
svg.append("text")
.attr("text-anchor", "left")
.style("font-size", "13px")
.style("color", "#333333")
.attr("transform", "translate("+ (width/20) + "," +(height/12) + ")")
.text("2000 to 2015")
.style("font-family", "Arial")
//line labels
svg.append('g')
.classed('labels-group', true)
.selectAll('text')
.data(data)
.enter()
.append('text')
.filter(function(d, i) { return i === 0||i === (data.length - 1) })
.classed('label',true)
.classed('label',true)
.attr({
'x':function(d,i) {
return x(d.Date);
},
'y':function(d,i) {
return y(d["Tax Collections"]);
}
})
.text(function(d,i){
return "$" + d["Tax Collections"] + "B";
})
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
});
</script>
</body>
Thank you in advance!
While rendering your line labels, you just want to add an event listener for mouseover that shows and hides it. So it appears everything here is good to go except for showing and hiding your labels, which again you should do on mouseover/mouseout.
Here's an example of what I mean that I recently worked on:
g.append('svg:circle')
.attr('cx', function(){ return x(j.timestamp._d); })
.attr('cy', function(){ return y(j.value); })
.attr('r', 4)
.attr('stroke', ML.colors.array[i])
.attr('stroke-width', 2)
.attr('fill', '#ffffff')
.attr('class', 'circle-markers')
.attr('data-index', k)
.on('mouseover', function(){
$(this).attr('fill', ML.colors.array[i]);
}).on('mouseout', function(){
$(this).attr('fill', '#ffffff');
});
In this example I have a line chart with circles drawn at each point. The circles initially have a white center with a stroke but on mouseover the center fills in the same color as the stroke. Then of course on mouseout this reverses.
Hope this helps.

Display Bar Chart below title in D3

I made this bar chart but the only problem I'm facing is having it display below the title i.e below 2014. Right now it starts right next to 2014. How do I do this? I posted two pictures of the charts. One in tableau and the one I made using d3.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Housing Tenure of DC Residents</title>
<style type="text/css">
.axis text{
font-family: Arial;
font-size: 13px;
color: #333333;
text-anchor: end;
}
.axis path {
fill:none;
stroke:#333333 ;
stroke-width: 1.5px;
shape-rendering: crispEdges
font-family: Arial;
}
.bar{
stroke: none;
fill: #037FAA;
}
.axis .label{
font-family: Arial;
font-size:13px;
color: #333333;
text-anchor: middle;
}
.textlabel{
font-family: Arial;
font-size:13px;
color: #333333;
text-anchor: left;
}
}
</style>
</head>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
var outerWidth = 475;
var outerHeight = 350;
var margin = { left: 75, top: 20, right: 0, bottom: 60 };
var padding = 100;
var barPadding = 0.2;
var barPaddingOuter = 0.1;
var xColumn = "Percentage";
var yColumn = "LabelD3";
var xAxisLabelOffset = 75;
var innerWidth = outerWidth - margin.left - margin.right;
var innerHeight = outerHeight - margin.top - margin.bottom;
var svg = d3.select("body")
.append("svg")
.attr("width", outerWidth)
.attr("height", outerHeight)
.attr("viewBox", "0 0 " + outerWidth + " " + outerHeight);
var g = svg.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var xAxisG = g.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + innerHeight + ")")
var yAxisG = g.append("g")
.attr("class", "y axis");
var xScale = d3.scale.linear()
.range([0, innerWidth - margin.right - margin.left], .1);
var yScale = d3.scale.ordinal()
.rangeRoundBands([innerHeight , 0], barPadding, barPaddingOuter);
var xAxis = d3.svg.axis().scale(xScale).orient("bottom")
.ticks(7)
.tickFormat(function(d) {return d + "%"});
var yAxis = d3.svg.axis().scale(yScale).orient("left");
function render(data){
xScale.domain([0, d3.max(data, function (d){ return d[xColumn]; })]);
yScale.domain( data.map( function (d){ return d[yColumn]; }));
xAxisG.call(xAxis);
yAxisG.call(yAxis);
var bars = g.selectAll("rect").data(data);
bars.enter().append("rect")
.attr("height", yScale.rangeBand());
bars
.attr("x", 0)
.attr("class", "bar")
.attr("y", function (d){ return yScale(d[yColumn]); })
.attr("width", function (d){ return xScale(d[xColumn]); });
// horizontal bar labels
svg.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.selectAll(".textlabel")
.data(data)
.enter()
.append("text")
.attr("class", "textlabel")
.style("font-family", "Arial")
.attr("x", function(d){ return xScale(parseFloat(d["Percentage"])) ; })
.attr("y", function(d){ return yScale(d["LabelD3"]) + yScale.rangeBand()/2; })
.text(function(d){ return (d["Percentage"] + "%"); });
// X-axis labels
svg.append("text")
.attr("text-anchor", "middle")
.style("font-size", "13px")
.style("color", "#333333")
.attr("transform", "translate("+ (outerWidth/2) + "," +(outerHeight-(padding/4)) + ")")
.text("% of Households")
.style("font-family", "Arial");
//title for the chart
svg.append("text")
.attr("text-anchor", "middle")
.style("font-size", "16px")
.style("color", "#333333")
.attr("transform", "translate("+ (outerWidth/3.78) + "," +(outerHeight/30) + ")")
.text("Housing Tenure of DC Residents")
.style("font-family", "Arial");
//source
svg.append("text")
.attr("text-anchor", "middle")
.style("font-size", "13px")
.style("color", "#333333")
.attr("transform", "translate("+ (outerWidth/3.2) + "," +(outerHeight/1) + ")")
.text("Source: US Census ACS 5-year 2010-2014")
.style("font-family", "Arial")
svg.append("text")
.attr("text-anchor", "left")
.style("font-size", "13px")
.style("color", "#333333")
.attr("transform", "translate("+ (outerWidth/28) + "," +(outerHeight/12) + ")")
.text("2014")
.style("font-family", "Arial")
bars.exit().remove();
}
function type(d){
d.population = +d.population;
return d;
}
d3.csv("Housing.csv", type, render);
</script>
</body>
</html>
Thank you in advance!
This is the CSV:
LabelD3 Percentage
Own Home 41.6
Rent Home 58.4

d3.js automatic data update - updateData

I made a simple bar chart using D3.js. The data for the chart is coming from a csv file. I would like for the chart to be updated every 2.5 seconds showing the new data. Right now, after updating the csv file the X and Y axis will update but the bars and mouseover tooltip shows the old values. I have looked at many different examples. Here are a few I have referenced. Anyone know what is going on?
http://mbostock.github.io/d3/tutorial/bar-2.html
http://www.d3noob.org/search?q=update
d3 update data and update graph
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<title>Bar Chart</title>
<style type="text/css">
.bar {
fill: steelblue;
}
.bar:hover {
fill: brown;
}
div.tooltip {
position: absolute;
text-align: left;
width: auto;
height: auto;
padding: 2px;
font-family: sans-serif;
font-size: 14px;
background: white;
border: 2;
border-radius: 5px;
pointer-events: none;
}
.axis {
font: 10px sans-serif;
}
.axis path,
.axis line {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
var margin = {top: 20, right: 20, bottom: 30, left: 45},
width = 1000 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var x = d3.scale.ordinal()
.rangeRoundBands([0, width], .1);
var y = d3.scale.linear()
.range([height, 0]);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.tickPadding(5);
//var data = [{"label":"Boone","values":0.8},{"label":"Story","values":0.2},{"label":"Polk","values":0.4}]
var div = d3.select("body").append("div")
.attr("class", "tooltip")
.style("position", "absolute")
.style("opacity", 0);
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 + ")")
d3.csv("data.csv", function(error, data) {
data.forEach(function(d) {
d.label = d.label;
d.values = +d.values;
});
x.domain(data.map(function(d) { return d.label; }));
y.domain([0, d3.max(data, function(d) { return d.values; })]);
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("transform", "rotate(-0)")
.attr("x", -10)
.attr("y", -16)
.attr("dy", ".71em")
.style("text-anchor", "end")
.text("Values");
svg.selectAll(".bar")
.data(data)
.enter().append("rect")
.on("mouseover", function(d) {
div.transition()
.duration(100)
.style("opacity", 1)
.style("left", (d3.event.pageX)+ "px")
.style("top", (d3.event.pageY) + "px");
div.html("<p>Label: " + d.label+ "<br>Value: " + d.values);
d3.select("#tooltip").classed("hidden", false);
})
.attr("class", "bar")
.attr("x", function(d) { return x(d.label); })
.attr("width", x.rangeBand())
.attr("y", function(d) { return y(d.values); })
.attr("height", function(d) { return height - y(d.values); });
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.append("text")
.attr("class", "label")
.attr("x", width)
.attr("y", 30)
.style("text-anchor", "end")
.text("Label");
});
var inter = setInterval(function() {
updateData();
},2500);
function updateData() {
d3.csv("data.csv", function(error, data) {
data.forEach(function(d) {
d.label = d.label;
d.values = +d.values;
});
x.domain(data.map(function(d) { return d.label; }));
y.domain([0, d3.max(data, function(d) { return d.values; })]);
var svg = d3.select("body")
var vis = svg.transition();
vis.select(".x.axis")
.duration(750)
.call(xAxis)
vis.select(".y.axis")
.duration(750)
.call(yAxis)
vis.select(".rect")
.duration(750)
.attr(".x", function(d) { return x(d.label); })
.attr(".y", function(d) { return y(d.values); })
});
}
</script>
</body>
</html>

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