0๐
โ
I found the solution:
Chart.register(ChartDataLabels);
var ctx_tab1 = document.getElementById('myChart-tab1').getContext('2d');
var labels = ['UNICEF', 'Save the Children', 'UNOCHA', 'World Food Programme', 'WHO', 'UNAMA', 'RED CRESCENT', 'UNFPA', 'UNCHR', 'UN WOMEN', 'WAR CHILD AFGHANISTAN'];
var doughnutChart = new Chart(ctx_tab1, {
type: 'pie',
data: {
labels: labels,
datasets: [{
backgroundColor: [
'rgba(255, 99, 132)',
'rgba(54, 162, 235)',
'rgba(255, 206, 86)',
'rgba(75, 192, 192)',
'rgba(153, 102, 255)',
'rgba(255, 159, 64)',
'rgba(255, 99, 132)',
'rgba(54, 162, 235)',
'rgba(255, 206, 86)',
'rgba(75, 192, 192)',
'rgba(153, 102, 255)',
],
data: [41, 20, 9, 8, 8, 4, 3, 3, 2, 2, 10],
datalabels: {
anchor: 'end',
align: 'end',
}
}]
},
options: {
plugins: {
datalabels: {
backgroundColor: function(context) {
// return context.dataset.backgroundColor;
},
// borderColor: 'white',
// borderRadius: 25,
// borderWidth: 2,
// color: 'white',
display: function(context) {
var dataset = context.dataset;
var count = dataset.data.length;
var value = dataset.data[context.dataIndex];
// return value > count * 1.5;
return value;
},
font: {
weight: 'bold'
},
padding: 0,
formatter: function(value) {
return value + '%';
}
},
legend: {
display: false,
position: 'right',
align: 'center',
labels: {
usePointStyle: true,
pointBackgroundColor: "rgba(0,191,255)",
pointStyle: 'rectRounded',
padding: 10,
color: '#000',
font: {
size: 12
},
},
}
},
// Core options
aspectRatio: 4 / 3,
cutoutPercentage: 32,
layout: {
padding: 32
},
elements: {
line: {
fill: false
},
point: {
hoverRadius: 7,
radius: 5
}
},
}
});
*, *::before, *::after { box-sizing: border-box; }
html, body {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
#container-chart {
width: 400px;
height: 400px;
}
<script src="https://cdn.jsdelivr.net/npm/chart.js@3.0.0/dist/chart.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-datalabels@2.0.0"></script>
<div id="container-chart"><canvas id="myChart-tab1"></canvas></div>
1๐
Have you tried chartjs-plugin-datalabels?
const ctx = document.getElementById('myChart');
Chart.register(ChartDataLabels);
const generateColors = (n) =>
Array.from({ length: n }, (_, i) => `hsl(${i / n * 360}, 100%, 80%)`)
const
data = [300, 200, 150, 100, 80, 70, 50, 30, 20],
sum = data.reduce((a, b) => a + b, 0),
colors = generateColors(data.length);
new Chart(ctx, {
type: 'pie',
plugins: [ChartDataLabels],
data: {
labels: data.map((_, i) => `d${i+1}`),
datasets: [{
label: 'My First Dataset',
data: data,
backgroundColor: colors,
hoverOffset: 4
}]
},
options: {
borderColor: 'rgba(0, 0, 0, 0.1)',
color: '#FFF',
plugins: {
datalabels: {
anchor: 'end',
color: colors,
backgroundColor: 'rgba(0, 0, 0, 0.75)',
borderRadius: 12,
padding: 4,
formatter: value => `${Math.round(value / sum * 100)}%`,
labels: {
title: {
font: {
weight: 'bold'
}
}
}
}
}
}
});
*, *::before, *::after { box-sizing: border-box; }
html, body {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
body {
background: #000;
display: flex;
justify-content: center;
padding: 4px;
}
.chart-container {
width: 400px;
height: 400px;
background: #222;
padding: 1rem;
border: thin solid #777;
}
<script src="https://cdn.jsdelivr.net/npm/chart.js@3.0.0/dist/chart.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-datalabels@2.0.0"></script>
<div class="chart-container">
<canvas id="myChart"></canvas>
</div>
Update
Here is a modified example adapted from your update to the plugin config.
Chart.register(ChartDataLabels);
const generateColors = (n) =>
Array.from({ length: n }, (_, i) => `hsl(${i / n * 360}, 100%, 67%)`);
const ctx = document.querySelector('#myChart').getContext('2d');
const response = [
{ name: 'UNICEF' , value: 41 },
{ name: 'Save the Children' , value: 20 },
{ name: 'UNOCHA' , value: 9 },
{ name: 'World Food Programme' , value: 8 },
{ name: 'WHO' , value: 8 },
{ name: 'UNAMA' , value: 4 },
{ name: 'RED CRESCENT' , value: 3 },
{ name: 'UNFPA' , value: 3 },
{ name: 'UNCHR' , value: 2 },
{ name: 'UN WOMEN' , value: 2 },
{ name: 'WAR CHILD AFGHANISTAN' , value: 10 },
];
const
data = response.map(d => d.value),
labels = response.map(d => d.name),
colors = generateColors(data.length);
const pieChart = new Chart(ctx, {
type: 'pie',
data: {
labels: labels,
datasets: [{
backgroundColor: colors,
data: data,
datalabels: {
anchor: 'end',
align: 'end',
},
hoverOffset: 4
}]
},
options: {
layout: {
padding: 32
},
plugins: {
datalabels: {
color: colors,
padding: 0,
formatter: (value, { chart: { data: { datasets: [{ data }] } } }) =>
Math.round(value / data.reduce((a, b) => a + b, 0) * 100) + '%'
},
legend: {
position: 'left',
align: 'center',
labels: {
usePointStyle: true,
pointStyle: 'rectRounded',
padding: 10,
color: '#FFF',
font: {
size: 12
},
},
}
}
}
});
*,
*::before,
*::after {
box-sizing: border-box;
}
html,
body {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
body {
background: #000;
display: flex;
justify-content: center;
padding: 4px;
}
.chart-container {
width: 400px;
height: 400px;
background: #222;
}
<script src="https://cdn.jsdelivr.net/npm/chart.js@3.0.0/dist/chart.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-datalabels@2.0.0"></script>
<div class="chart-container">
<canvas id="myChart"></canvas>
</div>
Source:stackexchange.com