Develop Reference

d3.js lollipop chart - animated

I am working on a d3 application - which features a bar chart with nodules on the top. I am keen to get this animated - so the bars grow to the point of rest and the nodules sprout like flowers.
So the nodules are either developed at the start and the bars just rise -- or the bars rise up and then the nodules flower.
//old js fiddle
http://jsfiddle.net/s1f4hzpu/1/
//current animation attempts
http://jsfiddle.net/9yvn8c4q/
var $this = $('.lollipopchart');
var data = [{
label: 'Toblerone',
value: 10,
},
{
label: 'Snickers',
value: 25,
},
{
label: 'Jawbreakers',
value: 60,
},
{
label: 'Gummi Worms',
value: 20,
},
];
var width = $this.data('width'),
height = $this.data('height');
var color = d3.scaleOrdinal()
.range(["#eb6383", "#fa9191", "#ffe9c5", "#b4f2e1"]);
data.forEach(function(d) {
d.total = +d.value;
});
var margin = {
top: 20,
right: 20,
bottom: 85,
left: 20
},
width = width - margin.left - margin.right,
height = height - margin.top - margin.bottom;
var x = d3.scaleBand()
.range([0, width])
.padding(0.9);
var y = d3.scaleLinear()
.range([height, 0]);
x.domain(data.map(function(d) {
return d.label;
}));
y.domain([0, d3.max(data, function(d) {
return d.total;
})]);
var svg = d3.select($this[0])
.append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr('class', 'lollipopchart')
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var lollipop = svg.append('g').attr('class', 'lollipop');
var bars = lollipop
.append("g")
.attr('class', 'bars')
bars.selectAll(".bar")
.data(data)
.enter().append("rect")
.attr("class", "bar")
.attr('fill', function(d, i) {
return color(i);
})
.attr("x", function(d) {
return x(d.label);
})
.attr("width", x.bandwidth())
.attr("y", function(d) {
return y(d.value);
})
.attr("height", function(d) {
return height - y(d.total);
});
var lolliradian = 10;
var circles = lollipop
.append("g")
.attr('class', 'circles');
circles.selectAll("circle")
.data(data)
.enter()
.append("circle")
//.transition()
//.duration(1000)
.attr("cx", function(d) {
return (x(d.label) + x.bandwidth() / 2);
})
.attr("cy", function(d) {
return y(d.value);
})
.attr("r", lolliradian)
.attr('fill', function(d, i) {
return color(i);
})
var innercircles = lollipop
.append("g")
.attr('class', 'innercircles');
innercircles.selectAll("circle")
.data(data)
.enter()
.append("circle")
//.transition()
//.duration(1000)
.attr("cx", function(d) {
return (x(d.label) + x.bandwidth() / 2);
})
.attr("cy", function(d) {
return y(d.value);
})
.attr("r", lolliradian - 5)
.attr('fill', '#ffffff')
lollipop.append("g")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x))
.selectAll("text")
.style("text-anchor", "end")
.attr("dx", "-.8em")
.attr("dy", ".15em")
.attr("transform", "rotate(-65)");
lollipop.append("g")
.call(d3.axisLeft(y));
body {
background: #eeeeee;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://d3js.org/d3.v4.min.js"></script>
<h1>LolliPop I</h1>
<div class="lollipopchart" data-width="300" data-height="300" />

Firstly, you don't need jQuery, you can do everything you want with regular d3.
Regardless, if you want to make the bars grow, you need to know that y=0 is the top and y=height is the bottom, so you need to actually decrease y as you increase height.
I also wouldn't draw a circle in front of another circle, but would use stroke and fill colours instead. If you make a stroke of 5 pixels wide, then it looks the same as in your example.
var data = [{
label: 'Toblerone',
value: 10,
},
{
label: 'Snickers',
value: 25,
},
{
label: 'Jawbreakers',
value: 60,
},
{
label: 'Gummi Worms',
value: 20,
},
];
var width = +d3.select(".lollipopchart").attr('data-width'),
height = +d3.select(".lollipopchart").attr('data-height');
var color = d3.scaleOrdinal()
.range(["#eb6383", "#fa9191", "#ffe9c5", "#b4f2e1"]);
data.forEach(function(d) {
d.total = +d.value;
});
var margin = {
top: 20,
right: 20,
bottom: 85,
left: 20
},
width = width - margin.left - margin.right,
height = height - margin.top - margin.bottom;
var x = d3.scaleBand()
.range([0, width])
.padding(0.9);
var y = d3.scaleLinear()
.range([height, 0]);
x.domain(data.map(function(d) {
return d.label;
}));
y.domain([0, d3.max(data, function(d) {
return d.total;
})]);
var svg = d3.select('.lollipopchart')
.append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr('class', 'lollipopchart')
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var lollipop = svg.append('g').attr('class', 'lollipop');
var bars = lollipop
.append("g")
.attr('class', 'bars')
bars.selectAll(".bar")
.data(data)
.enter().append("rect")
.attr("class", "bar")
.attr('fill', function(d, i) {
return color(i);
})
.attr("x", function(d) {
return x(d.label);
})
.attr("width", x.bandwidth())
.attr("y", height)
.transition()
.duration(1500)
.attr("y", function(d) {
return y(d.value);
})
.attr("height", function(d) {
return height - y(d.total);
});
var lolliradian = 10;
var circles = lollipop
.append("g")
.attr('class', 'circles');
circles.selectAll("circle")
.data(data)
.enter()
.append("circle")
.attr("cx", function(d) {
return (x(d.label) + x.bandwidth() / 2);
})
.attr("cy", height)
.attr("r", x.bandwidth() / 2)
.attr("fill", "white")
.attr("stroke-width", 5)
.attr('stroke', function(d, i) {
return color(i);
})
.transition()
.duration(1500)
.attr("cy", function(d) {
return y(d.value);
})
.on("end", function() {
d3.select(this)
.transition()
.duration(500)
.attr("r", lolliradian);
});
lollipop.append("g")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x))
.selectAll("text")
.style("text-anchor", "end")
.attr("dx", "-.8em")
.attr("dy", ".15em")
.attr("transform", "rotate(-65)");
lollipop.append("g")
.call(d3.axisLeft(y));
body {
background: #eeeeee;
}
<script src="https://d3js.org/d3.v4.min.js"></script>
<h1>LolliPop I</h1>
<div class="lollipopchart" data-width="300" data-height="300" />

Transition of labels in D3.js: Rename label names on change and transition smoothly

I am a beginner in d3 and I am creating a changing barchart with D3.js. I came so far that I can create the barchart, change the dataset when clicking on my radio buttons, and change the axises.
Now what I don't get to work is changing the name of the labels on the x and y axis. I also don't get it to work that my label ticks transition smoothly with my bars, they just change abruptly.
For my label names I was trying to remove the names and then add it again in my on change function. But that only displays the new text right from the start:
Appending to the svg:
//y-axis
svg.append("text")
.attr("class", "y label")
.attr("text-anchor", "end")
.attr("y", -20)
.attr("dy", ".75em")
.attr("transform", "rotate(0)")
.text("Crazy label name for axis");
And then removing it and adding it anew in my change function:
svg.select(".y.label").remove();
svg.append("text")
.attr("class", "y label")
.attr("text-anchor", "end")
.attr("y", -20)
.attr("dy", ".75em")
.attr("transform", "rotate(0)")
.text("new crazy text");
Also I can't get my tick-names (or the label names for each bar) transition smoothly with my bars.
Can anyone help me out? Very much appreciated!
Here is the full code as well as example data:
d3.selectAll("input").on("change", function(d) {
selectDataset.call(this, d);
});
function selectDataset(d) {
let value = this.value;
if (value === "heat") {
change(datasetTotal, value, "Default text");
} else if (value === "cool") {
change(datasetOption1, value, "Text 2");
} else if (value === "area") {
change(datasetOption2, value, "Text 3");
}
}
var margin = {
top: (parseInt(d3.select('.area-heat-cool').style('height'), 10) / 20),
right: (parseInt(d3.select('.area-heat-cool').style('width'), 10) / 20),
bottom: (parseInt(d3.select('.area-heat-cool').style('height'), 10) / 20),
left: (parseInt(d3.select('.area-heat-cool').style('width'), 10) / 5)
},
width = parseInt(d3.select('.area-heat-cool').style('width'), 10) - margin.left - margin.right,
height = parseInt(d3.select('.area-heat-cool').style('height'), 10) - margin.top - margin.bottom;
var div = d3.select(".area-heat-cool").append("div").attr("class", "toolTip");
var y = d3.scaleBand()
.rangeRound([height, 0], .2, 0.5)
.paddingInner(0.1);
var x = d3.scaleLinear()
.range([0, width]);
var xAxis = d3.axisBottom()
.scale(x);
var yAxis = d3.axisLeft()
.scale(y);
var svg = d3.select(".area-heat-cool").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 + ")");
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
//x-axis
svg.append("text")
.attr("class", "x label")
.attr("data-default", "text2_contact2")
.attr("text-anchor", "end")
.attr("x", width)
.attr("y", height - 6)
.text("Default text");
//y-axis
svg.append("text")
.attr("class", "y label")
.attr("text-anchor", "end")
.attr("y", -20)
.attr("dy", ".75em")
.attr("transform", "rotate(0)")
.text("Text of y Axis");
d3.select("input[value=\"heat\"]").property("checked", true);
change(datasetTotal);
function change(dataset, optionSelect, textselect) {
y.domain(dataset.map(function(d) {
return d.label;
}));
x.domain([0, d3.max(dataset, function(d) {
return d.value;
})]);
svg.select(".y.axis").remove();
svg.select(".x.axis").remove();
// svg.select(".y.label").remove();
d3.select(".x.label").text(textselect).transition().duration(1000) ;
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(0)")
.attr("x", 50)
.attr("dx", ".1em")
.style("text-anchor", "end")
.text("Option %");
var bar = svg.selectAll(".bar")
.data(dataset, function(d) {
return d.label;
});
var barExit = bar.exit().remove();
var barEnter = bar.enter()
.append("g")
.attr("class", "bar");
var barRects = barEnter.append("rect")
.attr("x", function(d) {
return x(0);
})
.attr("y", function(d) {
return y(d.label);
})
.attr("width", function(d) {
return x(d.value);
})
.attr("height", y.bandwidth());
var barTexts = barEnter.append("text")
.attr("x", function(d) {
return x(d.value) + 10;
})
.attr("y", function(d) {
return y(d.label) + y.bandwidth() / 2;
})
.attr("dy", ".35em")
.text(function(d) {
return d.value;
});
barRectUpdate = bar.select("rect")
.transition()
.duration(3050)
.attr("x", function(d) {
return x(0);
})
.attr("y", function(d) {
return y(d.label);
})
.attr("width", function(d) {
return x(d.value);
})
.attr("height", y.bandwidth())
.style('fill', function () {
if (optionSelect === "heat") {
return '#A12D24'
} else if (optionSelect === "cool") {
return '#668BA4'
} else if (optionSelect === "area") {
return 'lightgrey'
}
});
var barTextsUpdate = bar.select("text")
.transition()
.duration(3050)
.attr("x", function(d) {
return x(d.value) + 10;
})
.attr("y", function(d) {
return y(d.label) + y.bandwidth() / 2;
})
.attr("dy", ".35em")
.text(function(d) {
return d.value;
});
}
And data looks like
data1 = [{label: "example 1", value: 156}
{label: "example 2", value: 189}
{label: "example 3", value: 234}
{label: "example 4", value: 345}
{label: "example 5", value: 346}
{label: "example 6", value: 456}
{label: "example 7", value: 489}
{label: "example 8", value: 567}];
data2 = [{label: "example 1", value: 23}
{label: "example 2", value: 211}
{label: "example 3", value: 45}
{label: "example 4", value: 64}
{label: "example 5", value: 95}
{label: "example 6", value: 32}
{label: "example 7", value: 0}
{label: "example 8", value: 234}];

The problem is that you are removing the DOM elements for the text and not updating them. If there is a need to remove them then you can fade out the text and remove them at the end as such d3.select("text").transition().duration(300).style("opacity","0").on("end", () => { d3.select("text").removeAll() });
but I suggest that you reuse the labels and just update their content using the same d3.select("").transition().duration(300) way

Grouping bar and line charts

I am trying to group bar chart and line chart in d3 js and I followed one Link for that purpose,
Here is what my Ajax is returning in response:
[
{
"date_created": "2017-12-27",
"jobs_fail": 19,
"jobs_resub": 31,
"jobs_success": 50
},
{
"date_created": "2017-12-29",
"jobs_fail": 18,
"jobs_resub": 25,
"jobs_success": 44
},
{
"date_created": "2017-12-28",
"jobs_fail": 8,
"jobs_resub": 24,
"jobs_success": 44
},
{
"date_created": "2018-01-02",
"jobs_fail": 2,
"jobs_resub": 0,
"jobs_success": 0
}
]
And what I am trying to show is displaying the jobs_fail and jobs_resub as a bar and jobs_sucess as line chart in same graphs with respect to date_created,
Here is my code for that purpose.
<script>
function get_data() {
console.log("create post is working!") // sanity check
return $.ajax({
url : "/group/guest/query/", // the endpoint
type : "GET", // http method
});
};
var margin = {
top: 20,
right: 20,
bottom: 30,
left: 40
},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var x0 = d3.scale.ordinal()
.rangeRoundBands([0, width], .1);
var x1 = d3.scale.ordinal();
var y = d3.scale.linear()
.range([height, 0]);
var colorRange = d3.scale.category20();
var color = d3.scale.ordinal()
.range(colorRange.range());
var divTooltip = d3.select("body").append("div").attr("class", "toolTip");
var xAxis = d3.svg.axis()
.scale(x0)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.ticks(10, "");
var svg = d3.select("#chart").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 ajdata = get_data();
var k = [];
ajdata.success(function (data) {
var obj = jQuery.parseJSON(data);
alert(data);
var options = d3.keys(obj[0]).filter(function(key) { if (key != "date_created" & key != "jobs_success" ) { return key }}); // & key != "date_created"){return key} });
var line_option = d3.keys(obj[0]).filter(function(key) { if (key == "jobs_success" & key == "date_created"){return key} });
alert(options);
obj.forEach(function(d) {
d.valores = options.map(function(name) {return { name: name, value: +d[name]}; });});
x0.domain(obj.map(function(d) { return d.date_created; }));
x1.domain(options).rangeRoundBands([0, x0.rangeBand()]);
y.domain([0, d3.max(obj, function(d) { return d3.max(d.valores, function(d) { return d.value; }); })]);
var line = d3.svg.line()
.x(function(d) { return x1(d.date_created); })
.y(function(d) { return y(d.jobs_success); });
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("Number of jobs");
var bar = svg.selectAll(".bar")
.data(obj)
.enter().append("g")
.attr("class", "rect")
.attr("transform", function(d) { return "translate(" + x0(d.date_created) + ",0)"; });
bar.selectAll("rect")
.data(function(d) { return d.valores; })
.enter().append("rect")
.attr("width", x1.rangeBand())
.attr("x", function(d) { return x1(d.name); })
.attr("y", function(d) { return y(d.value); })
.attr("value", function(d){return d.name;})
.attr("height", function(d) { return height - y(d.value); })
.style("fill", function(d) { return color(d.name); });
bar
.on("mousemove", function(d){
divTooltip.style("left", d3.event.pageX+10+"px");
divTooltip.style("top", d3.event.pageY-25+"px");
divTooltip.style("display", "inline-block");
var x = d3.event.pageX, y = d3.event.pageY
var elements = document.querySelectorAll(':hover');
l = elements.length
l = l-1
elementData = elements[l].__data__
divTooltip.html((d.date_created)+"<br>"+elementData.name+"<br>"+elementData.value);
});
bar
.on("mouseout", function(d){
divTooltip.style("display", "none");
});
var legend = svg.selectAll(".legend")
.data(options.slice())
.enter().append("g")
.attr("class", "legend")
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
legend.append("rect")
.attr("x", width - 18)
.attr("width", 18)
.attr("height", 18)
.style("fill", color);
legend.append("text")
.attr("x", width - 24)
.attr("y", 9)
.attr("dy", ".35em")
.style("text-anchor", "end")
.text(function(d) { return d; });
svg.append("path")
//.data(obj)
.attr("class", "line")
.attr("d", line(obj));
UPDATE
What problem I am facing is I am able to render bar but not the line chart on bars.
I am trying to debug but not able to do so.
Please let me know what might I am doing wrong here.

You have some minor problems and a big problem.
The minor problems are:
Your y scale should take into account the maximum value in your dataset:
y.domain([0, d3.max(obj, function(d) {
return d.jobs_success
})]);
Your line generator should use x0. Besides that, you'll have to move the line by half rangeBand:
.x(function(d) {
return x0(d.date_created) + x0.rangeBand() / 2;
})
By default, a <path> has a black fill. Change it:
.style("fill", "none")
Those, however, are minor problems. The biggest problem lies here, in the data() method:
svg.append("path")
.data(obj)
.attr("class", "line")
.attr("d", line);
Let's see in detail what's happening here. You're passing the obj array to the data(). However, if you do this, each element of that array will be passed, individually, to the line generator.
So, supposing that this is your array...
["foo", "bar", "baz"]
...what you're passing to the line generator is just:
"foo".
You have some different solutions here. First, you can pass the array to the line generator directly, as you did in your edit. Second, you can wrap the array in an outer array:
svg.append("path")
.data([obj])
.attr("class", "line")
.attr("d", line);
That way, the whole obj array will be passed to the line generator.
Or, third, you can use datum:
svg.append("path")
.datum(obj)
.attr("class", "line")
.attr("d", line);
Here is your code with those changes and using datum to draw the path:
var obj = [{
"date_created": "2017-12-27",
"jobs_fail": 19,
"jobs_resub": 31,
"jobs_success": 50
}, {
"date_created": "2017-12-29",
"jobs_fail": 18,
"jobs_resub": 25,
"jobs_success": 44
}, {
"date_created": "2017-12-28",
"jobs_fail": 8,
"jobs_resub": 24,
"jobs_success": 44
}, {
"date_created": "2018-01-02",
"jobs_fail": 2,
"jobs_resub": 0,
"jobs_success": 0
}];
var margin = {
top: 20,
right: 20,
bottom: 30,
left: 40
},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var x0 = d3.scale.ordinal()
.rangeRoundBands([0, width], .1);
var x1 = d3.scale.ordinal();
var y = d3.scale.linear()
.range([height, 0]);
var colorRange = d3.scale.category20();
var color = d3.scale.ordinal()
.range(colorRange.range());
var divTooltip = d3.select("body").append("div").attr("class", "toolTip");
var xAxis = d3.svg.axis()
.scale(x0)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.ticks(10, "");
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 + ")");
var options = d3.keys(obj[0]).filter(function(key) {
if (key != "date_created" & key != "jobs_success") {
return key
}
}); // & key != "date_created"){return key} });
var line_option = d3.keys(obj[0]).filter(function(key) {
if (key == "jobs_success" & key == "date_created") {
return key
}
});
obj.forEach(function(d) {
d.valores = options.map(function(name) {
return {
name: name,
value: +d[name]
};
});
});
x0.domain(obj.map(function(d) {
return d.date_created;
}));
x1.domain(options).rangeRoundBands([0, x0.rangeBand()]);
y.domain([0, d3.max(obj, function(d) {
return d.jobs_success
})]);
var line = d3.svg.line()
.x(function(d) {
return x0(d.date_created) + x0.rangeBand() / 2;
})
.y(function(d) {
return y(d.jobs_success);
});
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("Number of jobs");
var bar = svg.selectAll(".bar")
.data(obj)
.enter().append("g")
.attr("class", "rect")
.attr("transform", function(d) {
return "translate(" + x0(d.date_created) + ",0)";
});
bar.selectAll("rect")
.data(function(d) {
return d.valores;
})
.enter().append("rect")
.attr("width", x1.rangeBand())
.attr("x", function(d) {
return x1(d.name);
})
.attr("y", function(d) {
return y(d.value);
})
.attr("value", function(d) {
return d.name;
})
.attr("height", function(d) {
return height - y(d.value);
})
.style("fill", function(d) {
return color(d.name);
});
bar
.on("mousemove", function(d) {
divTooltip.style("left", d3.event.pageX + 10 + "px");
divTooltip.style("top", d3.event.pageY - 25 + "px");
divTooltip.style("display", "inline-block");
var x = d3.event.pageX,
y = d3.event.pageY
var elements = document.querySelectorAll(':hover');
l = elements.length
l = l - 1
elementData = elements[l].__data__
divTooltip.html((d.date_created) + "<br>" + elementData.name + "<br>" + elementData.value);
});
bar
.on("mouseout", function(d) {
divTooltip.style("display", "none");
});
var legend = svg.selectAll(".legend")
.data(options.slice())
.enter().append("g")
.attr("class", "legend")
.attr("transform", function(d, i) {
return "translate(0," + i * 20 + ")";
});
legend.append("rect")
.attr("x", width - 18)
.attr("width", 18)
.attr("height", 18)
.style("fill", color);
legend.append("text")
.attr("x", width - 24)
.attr("y", 9)
.attr("dy", ".35em")
.style("text-anchor", "end")
.text(function(d) {
return d;
});
svg.append("path")
.datum(obj)
.attr("class", "line")
.attr("d", line)
.style("fill", "none")
.style("stroke", "red")
.style("stroke-width", 2);
.axis line,
.axis path {
fill: none;
stroke: black;
shape-rendering: crispEdges;
}
<script src="https://d3js.org/d3.v3.min.js"></script>

Ok a couple of things. Your line's x function should be relying on x0 not x1:
var line = d3.svg.line()
.x(function(d) { return x0(d.date_created); })
.y(function(d) { return y(d.jobs_success); });
And your path needs to be called like this:
svg.append("path")
.attr("class", "line")
.attr("d", line(obj));
That should get you most of the way there - you might want to tweak the maximum y-value, and shift the x co-ordinate of the line by x0.rangeBand()/2 as well to make it line up properly with the centre of the bars.

D3 horizontal bar chart will not transition to new dataset

I'm working on a d3.js horizontal bar graph (http://bl.ocks.org/juan-cb/ab9a30d0e2ace0d2dc8c) which updates/transitions based on user selections. Currently, I have added labels to the graph but it is not updating anymore. Not sure where the issue is. The bars should start from the left side but have moved to the right for some reason as well. To add labels to the bars, I added "g" elements to hold both the rect and the text. Any help will be appreciated.
JsFiddle - https://jsfiddle.net/fewpwqhd/1/
JS
datasetTotal = [{
label: "Category 1",
value: 19
}, {
label: "Category 2",
value: 5
}, {
label: "Category 3",
value: 13
}, {
label: "Category 4",
value: 17
}, {
label: "Category 5",
value: 21
}, {
label: "Category 6",
value: 25
}];
datasetOption1 = [{
label: "Category 1",
value: 22
}, {
label: "Category 2",
value: 33
}, {
label: "Category 3",
value: 4
}, {
label: "Category 4",
value: 15
}, {
label: "Category 5",
value: 36
}, {
label: "Category 6",
value: 0
}];
datasetOption2 = [{
label: "Category 1",
value: 10
}, {
label: "Category 2",
value: 20
}, {
label: "Category 3",
value: 30
}, {
label: "Category 4",
value: 5
}, {
label: "Category 5",
value: 12
}, {
label: "Category 6",
value: 23
}];
d3.selectAll("input").on("change", selectDataset);
function selectDataset() {
var value = this.value;
if (value == "total") {
change(datasetTotal);
} else if (value == "option1") {
change(datasetOption1);
} else if (value == "option2") {
change(datasetOption2);
}
}
var margin = {
top: (parseInt(d3.select('body').style('height'), 10) / 20),
right: (parseInt(d3.select('body').style('width'), 10) / 20),
bottom: (parseInt(d3.select('body').style('height'), 10) / 20),
left: (parseInt(d3.select('body').style('width'), 10) / 5)
},
width = parseInt(d3.select('body').style('width'), 10) - margin.left - margin.right,
height = parseInt(d3.select('body').style('height'), 10) - margin.top - margin.bottom;
var div = d3.select("body").append("div").attr("class", "toolTip");
var formatPercent = d3.format("");
var y = d3.scale.ordinal()
.rangeRoundBands([height, 0], .2, 0.5);
var x = d3.scale.linear()
.range([0, width]);
var xAxis = d3.svg.axis()
.scale(x)
.tickSize(-height)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left");
//.tickFormat(formatPercent);
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 + ")");
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
d3.select("input[value=\"total\"]").property("checked", true);
change(datasetTotal);
function change(dataset) {
y.domain(dataset.map(function(d) {
return d.label;
}));
x.domain([0, d3.max(dataset, function(d) {
return d.value;
})]);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
svg.select(".y.axis").remove();
svg.select(".x.axis").remove();
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("transform", "rotate(0)")
.attr("x", 50)
.attr("dx", ".1em")
.style("text-anchor", "end")
.text("Option %");
var bar = svg.selectAll(".bar")
.data(dataset, function(d) {
return d.label;
})
// new data:
.enter().append("g");
bar.append("rect")
.attr("class", "bar")
.attr("x", function(d) {
return x(d.value);
})
.attr("y", function(d) {
return y(d.label);
})
.attr("width", function(d) {
return width - x(d.value);
})
.attr("height", y.rangeBand());
bar.append("text")
.attr("x", function(d) {
return x(d.value) - 3;
})
.attr("text-anchor", "end")
.attr("y", function(d) {
return y(d.label) + y.rangeBand() / 2;
})
.attr("dy", ".35em")
.text(function(d) {
return d.value;
});
var bars = d3.select("svg").selectAll("g.rects").data(dataset);
// removed data:
bars.exit().remove();
// updated data:
bars.transition()
.duration(750)
.attr("x", function(d) {
return 0;
})
.attr("y", function(d) {
return y(d.label);
})
.attr("width", function(d) {
return x(d.value);
})
.attr("height", y.rangeBand());
};

Here is my suggestion: since you're appending both rectangles and texts elements to the <g> (groups), your enter-update-exit pattern should apply to the groups, not to the rectangles and texts:
var bar = svg.selectAll(".bar")
.data(dataset, function(d) {
return d.label;
});
var barExit = bar.exit().remove();
var barEnter = bar.enter()
.append("g")
.attr("class", "bar");
In fact, as your datasets always have 6 categories, you don't even need all this (the code could be substantially shorter).
Here is your updated fiddle: https://jsfiddle.net/2523onr3/
PS I took the liberty to make the bars growing from left to right, not from right to left. If that's incorrect, just change the x and width attributes.

I'd be interested in the pros and cons versus this approach?
https://jsfiddle.net/sjp700/2523onr3/2/
bar = svg.selectAll(".bar")
.data(dataset)
bar_g = bar.enter()
.append("g")
.attr("class", "bar")
.transition()
.attr("transform", function (d) { return "translate(" + x(0) + "," + y(d.label) + ")"; });
svg.selectAll(".bar")
.append("rect")
.attr("class", "rectband");
svg.selectAll(".bar")
.append("text")
.attr("class", "textband");
bar.selectAll(".textband")
.attr("transform", function (d) { return "translate(" + x(d.value) + "," + 0 + ")"; })
.attr("y", 30)
.attr("dy", ".35em")
.style("fill", "black")
.text(function (d) { return d.value; });
bar.selectAll(".rectband")
.attr("width", function (d) { return x(d.value); })
.attr("height", y.rangeBand());

Label is not coming in proper position in D3 Bar graphs

I have the following problems with my bar chart.How to set decimal label value in proper position in Bar graph.label should not be overlap in nearest bar.but in my case it's overlapping.please suggest how to correct it
below is my code
var data = [
{ Request: 1, AvgRequest: 4123.18 },
{ Request: 2, AvgRequest: 5221.16 },
{ Request: 3, AvgRequest: 32.42 },
{ Request: 4, AvgRequest: 22.13 },
{ Request: 5, AvgRequest: 413.21 },
{ Request: 6, AvgRequest: 112.19 }
];
var margin = { top: 40, right: 40, bottom: 35, left: 85 },
width = 450 - margin.left - margin.right,
height = 250 - margin.top - margin.bottom;
var formatPercent = d3.format(".0%");
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");
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 + ")");
data.forEach(function (d) {
d.Request = d.Request;
d.AvgRequest = +d.AvgRequest;
});
x.domain(data.map(function (d) { return d.Request; }));
y.domain([0, d3.max(data, function (d) { return d.AvgRequest; })]);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
// xAxis label
svg.append("text")
.attr("transform", "translate(" + (width / 2) + " ," + (height + margin.bottom + 5) + ")")
.style("text-anchor", "middle")
.text("Numbers of request");
//yAxis label
svg.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 0 - margin.left)
.attr("x", 0 - (height / 2))
.attr("dy", "1em")
.style("text-anchor", "middle")
.text("avg request);
// Title
svg.append("text")
.attr("x", (width / 2))
.attr("y", 0 - (margin.top / 2))
.attr("text-anchor", "middle")
.style("font-size", "16px")
.style("text-decoration", "underline")
.text("Avg");
svg.append("g")
.attr("class", "y axis")
.call(yAxis);
svg.selectAll(".bar")
.data(data)
.enter().append("rect")
.attr("class", "bar")
.attr("x", function (d) { return x(d.Request); })
.attr("width", x.rangeBand())
.attr("y", function (d) { return y(d.AvgRequest); })
.attr("height", function (d) { return height - y(d.AvgRequest); });
var text = svg.selectAll("text1")
.data(data)
.enter()
.append("text")
.attr("class", function (d) { return "label " + d.Request; })
.attr("x", function (d, i) {
return x(i) + x.rangeBand() / 5;
})
.attr("y", function (d, i) {
return y(d.AvgRequest) + 25;
})
.text(function (d) { return d.AvgRequest; })
.attr("font-size", "15px")
.style("stroke", "black");

I added two new variables to separate dimensions of complete chart and plot area:
var margin = { top: 40, right: 40, bottom: 35, left: 85 },
width = 450,
height = 250;
plotAreaWidth = width - margin.left - margin.right,
plotAreaHeight = height - margin.top - margin.bottom;
and changed other code accordingly.
And changes for text labels:
var text = svg.selectAll("text1")
.data(data)
.enter()
.append("text")
.attr("class", function (d) { return "label " + d.Request; })
.attr("x", function (d, i) {
//return x(i) + x.rangeBand() / 2;
return x(d.Request);
})
.attr("y", function (d, i) {
//return y(d.AvgRequest) + 25;
return y(d.AvgRequest) - 5;
})
.text(function (d) { return d.AvgRequest; })
.attr("font-size", "15px")
.style("stroke", "black");
Changed example at jsbin.