I have pieces of a pie, I am tracking pieces less than 10% - I draw an additional path with them and I need to draw a line up from the last path, like this:
Here's an example:
const height = 300,
width = 300,
margin = 30,
data = [{
browser: "Google Chrome",
rate: 42.52
},
{
browser: "Firefox",
rate: 16.23
},
{
browser: "Opera",
rate: 12.6
},
{
browser: "Internet Explorer",
rate: 8.97
},
{
browser: "Yandex Browser",
rate: 9.12
},
{
browser: "Other",
rate: 10.56
}
];
const color = d3.scale.category10();
const radius = Math.min(width - 2 * margin, height - 2 * margin) / 2;
const arc = d3.svg.arc()
.outerRadius(radius)
.innerRadius(0);
const arc2 = d3.svg.arc()
.outerRadius(radius + 5)
.innerRadius(radius + 3);
const pie = d3.layout.pie()
.sort(null)
.value(function(d) {
return d.rate;
});
const svg = d3.select("body").append("svg")
.attr("class", "axis")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform",
"translate(" + (width / 2) + "," + (height / 2) + ")");
const g = svg.selectAll(".arc")
.data(pie(data))
.enter().append("g")
.attr("class", "arc");
g.append("path")
.attr("d", arc)
.style("fill", function(d) {
return color(d.data.browser);
});
g.append("path")
.attr("d", arc2)
.style("display", d => d.data.rate < 10 ? 'block' : 'none');
g.append("text")
.attr("transform", function(d) {
return "translate(" + arc.centroid(d) + ")";
})
.style("text-anchor", "middle")
.text(function(d) {
return d.data.browser;
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.min.js"></script>
The outer circle is drawn from a variable arc2.
Ultimately pieces less than 10% must be carried up:
Inspired by the answer here
get the d attribute from the last element
ust path.split("L")[1].split("A")[0] to get the position of the endpoint of the arc.
g.filter(d=>d.data.rate < 10) // using filter to only draw what we need
.append("path")
.attr("class", "arc2")
.attr("d", arc2)
let last_arc2 = d3.selectAll(".arc2")[0][d3.selectAll(".arc2")[0].length-1]
let last_arc2_end = d3.select(last_arc2).attr("d").split("L")[1].split("A")[0]
let last_arc2_end_x = last_arc2_end.split(",")[0],
last_arc2_end_y = last_arc2_end.split(",")[1]
g.append("line")
.attr("x1", last_arc2_end_x)
.attr("x2", last_arc2_end_x)
.attr("y1", last_arc2_end_y)
.attr("y2", last_arc2_end_y-20)
.style("stroke", "black")
working example
Related
I'm trying to achieve this
but this is currently what I have
Essentially all I need to do is figure out how to have the lines emanating out from the circle starting at the arc start.
My question is exactly that, how can I translate the arc starting position into the x1,y1 attribute of an svg line. Below is the code that I currently have pertaining to drawing the lines:
// Draw lines emanating out
g.append('line')
.attr('class', 'outer-line')
.attr('x1', function(d) {
return 0;
})
.attr('x2', 0)
.attr('y1', -radius)
.attr('y2', -radius-150)
.attr('stroke', function(d, i) {
return color(i);
})
.attr('stroke-width','2')
.attr("transform", function(d) {
return "rotate(" + (d.startAngle+d.endAngle)/2 * (180/Math.PI) + ")";
});
If I understand your problem correctly, you can use just d.startAngle:
g.attr("transform", function(d) {
return "rotate(" + d.startAngle * (180/Math.PI) + ")";
});
Check here an example (click on "run code snippet"):
var dataset = [300, 200, 400, 200, 300, 100, 50];
var width = 460,
height = 300,
radius = Math.min(width, height) / 2;
var color = d3.scale.category20();
var pie = d3.layout.pie()
.sort(null);
var arc = d3.svg.arc()
.innerRadius(radius - 100)
.outerRadius(radius - 50);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
var path = svg.selectAll("path")
.data(pie(dataset))
.enter().append("path")
.attr("fill", function(d, i) { return color(i); })
.attr("d", arc);
var g = svg.selectAll(".groups")
.data(pie(dataset))
.enter()
.append("g");
g.append('line')
.attr('class', 'outer-line')
.attr('x1', 0)
.attr('x2', 0)
.attr('y1', -radius + 50)
.attr('y2', -radius)
.attr('stroke', 'black')
.attr('stroke-width','2')
.attr("transform", function(d) {
return "rotate(" + d.startAngle * (180/Math.PI) + ")";
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
After plotting a donut chart, I'm trying to add some legend, based on the following example:
http://bl.ocks.org/ZJONSSON/3918369
However, I'm receiving this error:
TypeError: undefined is not an object (evaluating 'n.apply')
I've printed the return of line 131 and all the legend names are printed.
I don't know what's is causing the undefined error print.
This is my main code:
var width = 300,
height = 300,
radius = Math.min(width, height) / 2;
var color = d3.scale.ordinal()
.range(colorrange);
var arc = d3.svg.arc()
.outerRadius(radius - 10)
.innerRadius(radius - 70);
var pie = d3.layout.pie()
.sort(null)
.value(function(d) {
return d.value;
});
var svg = d3.select("#info").attr("align", "center").append("svg")
.attr("class", "piechart")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
var g = svg.selectAll(".arc")
.data(pie(data))
.enter().append("g")
.attr("class", "arc");
g.append("path")
.attr("d", arc)
.attr("data-legend", function(d) {
return d.data.name;
})
.style("fill", function(d, i) {
return color(i);
});
g.append("text")
.attr("transform", function(d) {
return "translate(" + arc.centroid(d) + ")";
})
.attr("dy", ".35em")
.text(function(d) {
return d.data.label;
});
legend = svg.append("g")
.attr("class", "legend")
.attr("transform", "translate(50,30)")
.style("font-size", "12px")
.call(d3.legend)
And this is a minimal example:
https://jsfiddle.net/g6vyk7t1/12/
You need to upload the code http://bl.ocks.org/ZJONSSON/3918369#d3.legend.js for the legend in your Javascript (just copy-and-paste it the code, it's the function d3.legend).
I have a dataset that consists of the following data:
{
current: 5
expected: 8
gap: -3
id: 3924
name: "Forhandlingsevne"
progress: "0"
type: 2
}
Now then i have the following JavaScript code:
var data = scope.dataset;
var width = 500,
height = 500,
radius = Math.min(width, height) / 2,
innerRadius = 0.3 * radius;
var pie = d3.layout.pie()
.sort(null)
.value(function(d) { return d.width; });
var tip = d3.tip()
.attr('class', 'd3-tip')
.offset([0, 0])
.html(function(d) {
return d.data.name + ": <span style='color:orangered'>" + d.data.current + "</span>";
});
var arc = d3.svg.arc()
.innerRadius(innerRadius)
.outerRadius(function (d) {
return (radius - innerRadius) * (d.data.current / 100.0) + innerRadius;
});
var outlineArc = d3.svg.arc()
.innerRadius(innerRadius)
.outerRadius(radius);
var svg = d3.select("#astroD3").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
svg.call(tip);
// for (var i = 0; i < data.score; i++) { console.log(data[i].id) }
var path = svg.selectAll(".solidArc")
.data(pie(data))
.enter().append("path")
.attr("fill", function(d) { return getColor(d.gap); })
.attr("class", "solidArc")
.attr("stroke", "gray")
.attr("d", arc)
.on('mouseover', tip.show)
.on('mouseout', tip.hide);
var outerPath = svg.selectAll(".outlineArc")
.data(pie(data))
.enter().append("path")
.attr("fill", "none")
.attr("stroke", "gray")
.attr("class", "outlineArc")
.attr("d", outlineArc);
// calculate the weighted mean score
var score =
data.reduce(function(a, b) {
//console.log('a:' + a + ', b.score: ' + b.score + ', b.weight: ' + b.weight);
return a + (b.current * b.expected);
}, 0) /
data.reduce(function(a, b) {
return a + b.expected;
}, 0);
svg.append("svg:text")
.attr("class", "aster-score")
.attr("dy", ".35em")
.attr("text-anchor", "middle") // text-align: right
.text('');
function getColor(gap)
{
return gap > 0 ? '#5cb85c' : '#d9534f';
}
When running this i get multiple errors (1 for each of my data in my dataset) saying:
Error: Invalid value for <path> attribute d="MNaN,NaNA85.5,85.5 0 1,1 NaN,NaNLNaN,NaNA75,75 0 1,0 NaN,NaNZ"
When i debug i can see that my variables look like this:
Object {data: Object, value: NaN, startAngle: NaN, endAngle: NaN}
So my question is what am i doing wrong?
You're telling D3 to use the attribute width to determine the pie slices -- this attribute doesn't exist in your data. It looks like you want
var pie = d3.layout.pie()
.sort(null)
.value(function(d) { return d.current; });
I try to modify this example. I would like to create two data arrays and merge them using special mergingAr() function instead of data.csv. But it does not work. There is one-colour chart without any data. I can`t find the problem place in the code. So, here it is:
var width = 250,
height = 250,
radius = 230;
var arr1 = [44, 64]; //age
var arr2 = [14106543, 8819342]; //population
function type(d) {
d[1] = +d[1];
return d;
}
function mergingAr(array1, array2)
{
var i, out = [];
for(i=0;i<array1.length;i++)
{
out.push([array1[i],array2[i]]);
}
return out;
}
var data = mergingAr(arr1, arr2);
var color = d3.scale.ordinal()
.range(["#EB7221", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"]);
var arc = d3.svg.arc()
.outerRadius(radius - 100)
.innerRadius(radius - 180);
var pie = d3.layout.pie()
.sort(null)
.value(function(d) { return d[1]; });
var svg = d3.select("#pie").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
var g = svg.selectAll(".arc")
.data(pie(data))
.enter().append("g")
.attr("class", "arc");
g.append("path")
.attr("d", arc)
.style("fill", function(d) { return color(d[0]); });
g.append("text")
.attr("transform", function(d) { return "translate(" + arc.centroid(d) + ")"; })
.attr("dy", ".35em")
.style("text-anchor", "middle")
.text(function(d) { return d[0]; });
var legend = svg.selectAll(".legend")
.data(color.domain())
.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; });
Thanks all for help!
Your data is there, but your color is wrong. Right now, you have this line setting path color:
.style("fill", function(d) { return color(d[0]); });
The problem is that your data is an object, not an array. (It's transformed by the pie function), so you need to reference the data attribute on the object, and then get the zero index of that array, like so:
.style("fill", function(d) { return color(d.data[0]); });
I'm trying to add a legend to a d3 scatterplot matrix (using this example as a template: http://bl.ocks.org/mbostock/4063663), and while the scatterplot itself is displaying as expected, I have been unable to successfully add a legend. The code for the plot and one of the attempts at adding a legend are below:
var width = 960,
size = 150,
padding = 19.5;
var x = d3.scale.linear()
.range([padding / 2, size - padding / 2]);
var y = d3.scale.linear()
.range([size - padding / 2, padding / 2]);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.ticks(5);
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.ticks(5);
var color = d3.scale.category10();
d3.csv(datafilename, function(error, dataset) {
var domainByTrait = {},
traits = d3.keys(dataset[0]).filter(function(d) { return d !== "class"; }),
n = traits.length;
traits.forEach(function(trait) {
domainByTrait[trait] = d3.extent(dataset, function(d) { return d[trait]; });
});
xAxis.tickSize(size * n);
yAxis.tickSize(-size * n);
var brush = d3.svg.brush()
.x(x)
.y(y)
.on("brushstart", brushstart)
.on("brush", brushmove)
.on("brushend", brushend);
var svg = d3.select("#visualizationDiv").append("svg")
.attr("width", size * n + padding)
.attr("height", size * n + padding)
.append("g")
.attr("transform", "translate(" + padding + "," + padding / 2 + ")");
svg.selectAll(".x.axis")
.data(traits)
.enter().append("g")
.attr("class", "x axis")
.attr("transform", function(d, i) { return "translate(" + (n - i - 1) * size + ",0)"; })
.each(function(d) { x.domain(domainByTrait[d]); d3.select(this).call(xAxis); });
svg.selectAll(".y.axis")
.data(traits)
.enter().append("g")
.attr("class", "y axis")
.attr("transform", function(d, i) { return "translate(0," + i * size + ")"; })
.each(function(d) { y.domain(domainByTrait[d]); d3.select(this).call(yAxis); });
var cell = svg.selectAll(".cell")
.data(cross(traits, traits))
.enter().append("g")
.attr("class", "cell")
.attr("transform", function(d) { return "translate(" + (n - d.i - 1) * size + "," + d.j * size + ")"; })
.each(plot);
// Titles for the diagonal.
cell.filter(function(d) { return d.i === d.j; }).append("text")
.attr("x", padding)
.attr("y", padding)
.attr("dy", ".71em")
.text(function(d) { return d.x; });
cell.call(brush);
function plot(p) {
var cell = d3.select(this);
x.domain(domainByTrait[p.x]);
y.domain(domainByTrait[p.y]);
cell.append("rect")
.attr("class", "frame")
.attr("x", padding / 2)
.attr("y", padding / 2)
.attr("width", size - padding)
.attr("height", size - padding);
cell.selectAll("circle")
.data(dataset)
.enter().append("circle")
.attr("cx", function(d) { return x(d[p.x]); })
.attr("cy", function(d) { return y(d[p.y]); })
.attr("r", 3)
.style("fill", function(d) { return color(d.class); });
}
var brushCell;
// Clear the previously-active brush, if any.
function brushstart(p) {
if (brushCell !== this) {
d3.select(brushCell).call(brush.clear());
x.domain(domainByTrait[p.x]);
y.domain(domainByTrait[p.y]);
brushCell = this;
}
}
// Highlight the selected circles.
function brushmove(p) {
var e = brush.extent();
svg.selectAll("circle").classed("hidden", function(d) {
return e[0][0] > d[p.x] || d[p.x] > e[1][0]
|| e[0][1] > d[p.y] || d[p.y] > e[1][1];
});
}
// If the brush is empty, select all circles.
function brushend() {
if (brush.empty()) svg.selectAll(".hidden").classed("hidden", false);
}
function cross(a, b) {
var c = [], n = a.length, m = b.length, i, j;
for (i = -1; ++i < n;) for (j = -1; ++j < m;) c.push({x: a[i], i: i, y: b[j], j: j});
return c;
}
d3.select(self.frameElement).style("height", size * n + padding + 20 + "px");
// add legend
var legend = svg.append("g")
.attr("class", "legend")
.attr("height", 100)
.attr("width", 100)
.attr('transform', 'translate(-20,50)');
legend.selectAll('rect')
.data(dataset)
.enter()
.append("rect")
.attr("x", width - 65)
.attr("y", function(d, i){ return i * 20;})
.attr("width", 10)
.attr("height", 10)
.style("fill", function(d) { return color(d.class); });
legend.selectAll('text')
.data(dataset)
.enter()
.append("text")
.attr("x", width - 52)
.attr("y", function(d, i){ return i * 20 + 9;})
.text(function(d) { return d.class; });
});
Among my other unsuccessful attempts at adding a legend are
var legend = svg.selectAll("g")
.data(dataset)
.enter().append("g")
.attr("class", "legend")
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
legend.append("rect")
.attr("x", width - 28)
.attr("width", 18)
.attr("height", 18)
.style("fill", function(d) { return color(d.class); });
legend.append("text")
.attr("x", width - 34)
.attr("y", 9)
.attr("dy", ".35em")
.style("text-anchor", "end")
.text(function(d) { return d.class; });
and
var legend = svg.selectAll('g').data(dataset)
.enter()
.append('g')
.attr("class", "legend");
legend.append("rect")
.attr("x", width - 45)
.attr("y", 25)
.attr("height", 50)
.attr("width", 50)
.each(function(d, i) {
var g = d3.select(this);
g.append("rect")
.attr("x", width - 65)
.attr("y", i*25)
.attr("width", 10)
.attr("height", 10)
.style("fill", function(d) { return color(d.class); });
g.append("text")
.attr("x", width - 50)
.attr("y", i * 25 + 8)
.attr("height",30)
.attr("width",100)
.style("fill", function(d) { return color(d.class); })
.text(function(d) { return d.class; });
all based on examples I've found on the web. None of these approaches seem to be working - I must be missing something here. Any insights or suggestions would be greatly appreciated.
The problem is right at the beginning:
var legend = svg.selectAll('g').data(dataset)
.enter()
.append('g')
.attr("class", "legend");
The selectAll('g') is going to select one of the groups already in your diagram, and then nothing will happen because enter() indicates that everything from there on (including the value that gets saved to the legend variable) only applies to groups that don't exist yet.
I'm pretty sure this legend code is supposed to be run from within its own <g> element. That way, it won't interfere with the rest of your graph.
var legendGroup = svg.append('g')
.attr('class', 'legend')
.attr('transform', /* translate as appropriate */);
var legendEntry = legendGroup.selectAll('g')
.data(dataset);
//create one legend entry for each series in the dataset array
//if that's not what you want, create an array that has one
//value for every entry you want in the legend
legendEntry.enter().append("g")
.attr("class", "legend-entry")
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
//shift each entry down by approx 1 line (20px)
legendEntry.append("rect") //add a square to each entry
/* and so on */