i want to set units in my pie chart-pie.js. in this data sets i want to add a unit "'Rp'+data" in my pie-chart.js
enter image description here
here is my code
// Pie Chart Example
var ctx = document.getElementById("myPieChart");
var myPieChart = new Chart(ctx, {
type: 'pie',
data: {
labels: ["Makassar", "Sinjae", "Bulukumba", "Gowa"],
datasets: [{
data: [Rp. 4000, Rp. 3000, Rp. 2000, Rp. 5000],
backgroundColor: ['#007bff', '#dc3545', '#ffc107', '#28a745'],
}],
},
});
do you guys have any idea ? any help will be appreciated
Update #1
Hi I already tried your code before, i realized i used v2.8.0, when i used your code and change it into "Tooltips" and it run just like in the picture
enter image description here
Here is my Updated code
var ctx = document.getElementById("myPieChart").getContext('2d');
var myPieChart = new Chart(ctx, {
type: 'pie',
data: {
labels: ["Makassar", "Sinjae", "Bulukumba", "Gowa"],
datasets: [{
label: '# of Votes',
data:[4000, 3000, 2000, 5000],
backgroundColor: ['#007bff', '#dc3545', '#ffc107', '#28a745'],
}],
},
options:{
tooltips:{
callbacks:{
label: (ttItem) => (`${ttItem.label}: Rp. ${ttItem.parsed}`)
}
}
}
});
You will have to use a custom tooltip callback like this:
options: {
plugins: {
tooltip: {
callbacks: {
label: (ttItem) => (`${ttItem.label}: Rp. ${ttItem.parsed}`)
}
}
}
}
Documentation: https://www.chartjs.org/docs/latest/configuration/tooltip.html#tooltip-callbacks
V2:
options: {
tooltips: {
callbacks: {
label: (ttItem, items) => (`${items.labels[ttItem.index]}: R. ${items.datasets[ttItem.datasetIndex].data[ttItem.index]}`)
}
}
}
Example V3:
var options = {
type: 'pie',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
borderWidth: 1
}]
},
options: {
plugins: {
tooltip: {
callbacks: {
label: (ttItem) => (`${ttItem.label}: Rp. ${ttItem.parsed}`)
}
}
}
}
}
var ctx = document.getElementById('chartJSContainer').getContext('2d');
new Chart(ctx, options);
<body>
<canvas id="chartJSContainer" width="600" height="400"></canvas>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.2.0/chart.js"></script>
</body>
Example V2:
var options = {
type: 'pie',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
borderWidth: 1
}]
},
options: {
tooltips: {
callbacks: {
label: (ttItem, items) => (`${items.labels[ttItem.index]}: R. ${items.datasets[ttItem.datasetIndex].data[ttItem.index]}`)
}
}
}
}
var ctx = document.getElementById('chartJSContainer').getContext('2d');
new Chart(ctx, options);
<body>
<canvas id="chartJSContainer" width="600" height="400"></canvas>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.8.0/Chart.js"></script>
</body>
Related
I want to add datalabels to the top of each bar and color them in black and make it in bigger font. Like this:
my chart with necessary labels
But all that I tried don't change the chart.
I add chartjs and charts-plugin-datalabels:
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.8.0/chart.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/chartjs-plugin-datalabels/2.0.0/chartjs-plugin-datalabels.js"></script>
Chart creating function:
function bars_chart(data, period) {
Chart.register(ChartDataLabels)
document.querySelector('#chartContainer').innerHTML = '<canvas id="bar-chart-horizontal"></canvas>'
var chartConfig = {
type: 'bar',
data: {
labels: period,
datasets: data
},
options: {
responsive: true,
plugins: {
dataLabels: {
font: {
color: "#000000",
size: 25
},
color: "#000000"
},
legend: {
position: 'top',
},
title: {
display: true,
text: 'Chart.js Bar Chart'
},
}
},
};
new Chart(document.getElementById("bar-chart-horizontal"), chartConfig);
}
It looks like there is a simple solution but I can't find it)
Your namespace is wrong, you putted a capital L in there while it needs to be fully lower case. After that you can set anchor and align to 'end' to get the value on top of the bars:
Chart.register(ChartDataLabels)
const options = {
type: 'bar',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
backgroundColor: 'pink'
}]
},
options: {
plugins: {
datalabels: {
color: 'black',
font: {
size: 40
},
anchor: 'end',
align: 'end'
}
}
}
}
const ctx = document.getElementById('chartJSContainer').getContext('2d');
new Chart(ctx, options);
<body>
<canvas id="chartJSContainer" width="600" height="400"></canvas>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.8.0/chart.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/chartjs-plugin-datalabels/2.0.0/chartjs-plugin-datalabels.js"></script>
</body>
I've got the following function making doughnut charts in ChartJS, the function imports the data, label text, and the id of the element. For some reason the options legend labels does not work for me. The default color of '#666' is not usable for my site's layout either.
my function:
function newDoughnutChart(id, labels, data) {
var donutChartCanvas = $(id).get(0).getContext('2d')
var donutData = {
labels: labels,
datasets: [
{
data: data,
backgroundColor: backgroundColor,
}
]
}
var donutOptions = {
maintainAspectRatio: false,
responsive: true,
options: {
legend: {
labels: {
usePointStyle: true,
fontColor: "#fff",
}
}
}
}
new Chart(donutChartCanvas, {
type: 'doughnut',
data: donutData,
options: donutOptions
})
}
backgroundColor is a variable I've set globally for this js file.
The legend config has been moved to the plugins section
Example:
var options = {
type: 'line',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
borderWidth: 1
},
{
label: '# of Points',
data: [7, 11, 5, 8, 3, 7],
borderWidth: 1
}
]
},
options: {
plugins: {
legend: {
labels: {
color: 'red'
}
}
}
}
}
var ctx = document.getElementById('chartJSContainer').getContext('2d');
new Chart(ctx, options);
<body>
<canvas id="chartJSContainer" width="600" height="400"></canvas>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.3.2/chart.js"></script>
</body>
var donutOptions = {
maintainAspectRatio: false,
responsive: true,
options: {
plugins: {
legend: {
display: true,
labels: {
color: 'rgb(255, 99, 132)'
}
}
}
}
}
You can change the color by grabbing the class of that div tag using CSS selector. But It's not the best idea because it will change the color in your whole app.
I'm using line chart js to display a graph and I'm trying to calculate the difference between the selected point and the previous one and render it in a tool tip.
I've read that I should use callbacks function but when I tried it nothing happen.
Even I only try to change the tittle
Here's my options for my line chart if anyone can help :)
Chart js version : 3.6.1
plugins: {
legend: {
display: false
},
title: {
display: true,
font: {
size: 18,
},
color: "white"
},
zoom: {
zoom: {
drag: {
enabled: true
},
mode: 'xy',
}
},
tooltip: {
callbacks: {
title: function () {
return "my tittle";
}
}
}
}
This is because you are using V2 syntax in with V3, you can read the namespace in the options.
Tooltip has been moved to the plugins section
For all changes please read the migration guide
const options = {
type: 'line',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
borderColor: 'orange'
},
{
label: '# of Points',
data: [7, 11, 5, 8, 3, 7],
borderColor: 'pink'
}
]
},
options: {
plugins: {
tooltip: {
callbacks: {
title: () => ('Title')
}
}
}
}
}
const ctx = document.getElementById('chartJSContainer').getContext('2d');
new Chart(ctx, options);
<body>
<canvas id="chartJSContainer" width="600" height="400"></canvas>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.6.2/chart.js"></script>
</body>
I am having trouble with my chartsjs labels.
my graph generates fine, I am trying to set the chart so that the data labels are for the text part of the data and not the numbers part. my code shows the data labels as 4, 6 and 2 where as i need them to show the text: me, you and them.
<script>
var ctx = document.getElementById('myChart4').getContext('2d');
var myChart4 = new Chart(ctx, {
plugins: [ChartDataLabels],
type: 'doughnut',
data: {
labels: ['me','you','them'
],
datasets: [{
label: false,
data: [4,6,2
],
}]
},
options: {
responsive: false,
plugins: {
datalabels: {
color: 'black',
anchor: 'end',
align: 'end',
offset: 15
},
legend: {
display: false
},
title: {
display: true,
text:'Reason'
}
},
responsive: false,
onClick: (evt, activeEls) => {
show();
},
}
});
You can use the formatter function for this:
Chart.register(ChartDataLabels)
const options = {
type: 'bar',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
backgroundColor: 'orange'
}]
},
options: {
plugins: {
datalabels: {
color: 'black',
anchor: 'end',
align: 'end',
offset: 15,
formatter: (val, ctx) => (ctx.chart.data.labels[ctx.dataIndex])
},
}
}
}
const ctx = document.getElementById('chartJSContainer').getContext('2d');
new Chart(ctx, options);
<body>
<canvas id="chartJSContainer" width="600" height="400"></canvas>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.6.0/chart.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/chartjs-plugin-datalabels/2.0.0/chartjs-plugin-datalabels.js"></script>
</body>
I've got the following function making doughnut charts in ChartJS, the function imports the data, label text, and the id of the element. For some reason the options legend labels does not work for me. The default color of '#666' is not usable for my site's layout either.
my function:
function newDoughnutChart(id, labels, data) {
var donutChartCanvas = $(id).get(0).getContext('2d')
var donutData = {
labels: labels,
datasets: [
{
data: data,
backgroundColor: backgroundColor,
}
]
}
var donutOptions = {
maintainAspectRatio: false,
responsive: true,
options: {
legend: {
labels: {
usePointStyle: true,
fontColor: "#fff",
}
}
}
}
new Chart(donutChartCanvas, {
type: 'doughnut',
data: donutData,
options: donutOptions
})
}
backgroundColor is a variable I've set globally for this js file.
The legend config has been moved to the plugins section
Example:
var options = {
type: 'line',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
borderWidth: 1
},
{
label: '# of Points',
data: [7, 11, 5, 8, 3, 7],
borderWidth: 1
}
]
},
options: {
plugins: {
legend: {
labels: {
color: 'red'
}
}
}
}
}
var ctx = document.getElementById('chartJSContainer').getContext('2d');
new Chart(ctx, options);
<body>
<canvas id="chartJSContainer" width="600" height="400"></canvas>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.3.2/chart.js"></script>
</body>
var donutOptions = {
maintainAspectRatio: false,
responsive: true,
options: {
plugins: {
legend: {
display: true,
labels: {
color: 'rgb(255, 99, 132)'
}
}
}
}
}
You can change the color by grabbing the class of that div tag using CSS selector. But It's not the best idea because it will change the color in your whole app.