In Chart.js set chart title, name of x axis and y axis?
ChartsTitlechart.jsCharts Problem Overview
Does Chart.js (documentation) have option for datasets to set name (title) of chart (e.g. Temperature in my City), name of x axis (e.g. Days) and name of y axis (e.g. Temperature). Or I should solve this with css?
var lineChartData = {
labels : ["January","February","March","April","May","June","July"],
datasets : [
{
fillColor : "rgba(220,220,220,0.2)",
strokeColor : "rgba(220,220,220,1)",
pointColor : "rgba(220,220,220,1)",
pointStrokeColor : "#fff",
pointHighlightFill : "#fff",
pointHighlightStroke : "rgba(220,220,220,1)",
data : [data]
}
]
}
Realy thanks for help.
Charts Solutions
Solution 1 - Charts
In Chart.js version 2.0, it is possible to set labels for axes:
options = {
scales: {
yAxes: [{
scaleLabel: {
display: true,
labelString: 'probability'
}
}]
}
}
See Labelling documentation for more details.
Solution 2 - Charts
For Chart.js version 3
options = {
scales: {
y: [{
title: {
display: true,
text: 'Your Title'
}
}]
}
}
Solution 3 - Charts
If you have already set labels for your axis like how @andyhasit and @Marcus mentioned, and would like to change it at a later time, then you can try this:
chart.options.scales.yAxes[ 0 ].scaleLabel.labelString = "New Label";
Full config for reference:
var chartConfig = {
type: 'line',
data: {
datasets: [ {
label: 'DefaultLabel',
backgroundColor: '#ff0000',
borderColor: '#ff0000',
fill: false,
data: [],
} ]
},
options: {
responsive: true,
scales: {
xAxes: [ {
type: 'time',
display: true,
scaleLabel: {
display: true,
labelString: 'Date'
},
ticks: {
major: {
fontStyle: 'bold',
fontColor: '#FF0000'
}
}
} ],
yAxes: [ {
display: true,
scaleLabel: {
display: true,
labelString: 'value'
}
} ]
}
}
};
Solution 4 - Charts
For Readers in 2021:
Version
"chart.js": "^3.3.2",
Real World Working Sample:
const optionsTemplate = (yAxisTitle, xAxisTitle) => {
return {
scales: {
yAxes: {
title: {
display: true,
text: yAxisTitle,
font: {
size: 15
}
},
ticks: {
precision: 0
}
},
xAxes: {
title: {
display: true,
text: xAxisTitle,
font: {
size: 15
}
}
}
},
plugins: {
legend: {
display: false,
}
}
}
}
Solution 5 - Charts
just use this:
<script>
var ctx = document.getElementById("myChart").getContext('2d');
var myChart = new Chart(ctx, {
type: 'bar',
data: {
labels: ["1","2","3","4","5","6","7","8","9","10","11",],
datasets: [{
label: 'YOUR LABEL',
backgroundColor: [
"#566573",
"#99a3a4",
"#dc7633",
"#f5b041",
"#f7dc6f",
"#82e0aa",
"#73c6b6",
"#5dade2",
"#a569bd",
"#ec7063",
"#a5754a"
],
data: [12, 19, 3, 17, 28, 24, 7, 2,4,14,6],
},]
},
//HERE COMES THE AXIS Y LABEL
options : {
scales: {
yAxes: [{
scaleLabel: {
display: true,
labelString: 'probability'
}
}]
}
}
});
</script>
Solution 6 - Charts
In chart JS 3.5.x, it seems to me the title of axes shall be set as follows (example for x axis, title = 'seconds'):
options: {
scales: {x: { title: { display: true, text: 'seconds' }}}
}
see: https://www.chartjs.org/docs/latest/axes/labelling.html
Solution 7 - Charts
<Scatter
data={data}
// style={{ width: "50%", height: "50%" }}
options={{
scales: {
yAxes: [
{
scaleLabel: {
display: true,
labelString: "Probability",
},
},
],
xAxes: [
{
scaleLabel: {
display: true,
labelString: "Hours",
},
},
],
},
}}
/>
Solution 8 - Charts
See example with name of x axis and y axis left and right.
public barChartOptions: ChartOptions = {
title: {
display: true,
text: 'Custom Chart Title',
},
responsive: true,
legend: {
position: 'right',
},
scales: {
yAxes: [
{
position: 'right',
scaleLabel: {
display: true,
labelString: 'Frequency Rate - right',
},
},
{
position: 'left',
scaleLabel: {
display: true,
labelString: 'Frequency Rate - left',
},
},
],
xAxes: [
{
display: true,
position: 'bottom',
scaleLabel: {
display: true,
labelString: 'Titulo do eixo X',
fontStyle: 'italic',
fontSize: 12,
fontColor: '#030',
},
},
],
},
};