Change X and Y axis font color - javascript

How can I change the color of the X and Y axes labels?
I was trying to use fontColor within scaleLabel but I might be doing it in the wrong place ?
I tried applying it within scale as can be found on the source code. I also tried under scales and even within xAxes.
var options = {
type: 'bar',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
backgroundColor: 'red',
borderWidth: 1
}]
},
options: {
scale: {
scaleLabel:{
fontColor: 'red'
}
},
scales: {
yAxes: [{
ticks: {
beginAtZero:true
}
}]
}
}
};
Reproduction online
I've been checking the documentation but it doesn't seem to be very clear to me.
And as chart.js doesn't provide enough examples, it is not easy to find out things sometimes...


$(function(){
var ctx = document.getElementById("myChart");
//Chart.defaults.global.defaultFontColor='red';
var myChart = new Chart(ctx, {
type: 'bar',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
backgroundColor: [
'rgba(255, 99, 132, 0.2)',
'rgba(54, 162, 235, 0.2)',
'rgba(255, 206, 86, 0.2)',
'rgba(75, 192, 192, 0.2)',
'rgba(153, 102, 255, 0.2)',
'rgba(255, 159, 64, 0.2)'
],
borderColor: [
'rgba(255,99,132,1)',
'rgba(54, 162, 235, 1)',
'rgba(255, 206, 86, 1)',
'rgba(75, 192, 192, 1)',
'rgba(153, 102, 255, 1)',
'rgba(255, 159, 64, 1)'
],
borderWidth: 1
}]
},
options: {
legend:{labels: {fontColor: 'orange'}},
title: {
display: true,
fontColor: 'blue',
text: 'Custom Chart Title'
},
scales: {
yAxes: [{
ticks: {
beginAtZero:true,
fontColor: 'red'
},
}],
xAxes: [{
ticks: {
fontColor: 'green'
},
}]
}
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.3.0/Chart.min.js"></script>
<canvas id="myChart" width="400" height="400"></canvas>
You can use fontColor inside ticks/label/legend:labels for a particular axis,
options: {
legend: {
labels: {
fontColor: 'orange'
}
},
title: {
display: true,
fontColor: 'blue',
text: 'Custom Chart Title'
} ,
scales: {
yAxes: [{
ticks: {
beginAtZero:true,
fontColor: 'red'
},
}],
xAxes: [{
ticks: {
fontColor: 'green'
},
}]
}
}
or change the defaultFontColor to change font color of entire text elements drawn on the canvas.
Chart.defaults.global.defaultFontColor='red';


I might be late to this question, but this answer may be useful for people who are looking for the answers.
In Chart.js, to style the scale label and ticks we can use the below settings.
options: {
scales: {
xAxes: [{
display: true,
scaleLabel: { // To format the scale label
display: true,
labelString: 'X axis name',
fontColor: '#000000',
fontSize: 10
},
ticks: {
fontColor: "black", // To format the ticks, coming on the axis/labels which we are passing
fontSize: 14
}
}],
yAxes: [{
display: true,
scaleLabel: {
display: true,
labelString: 'Y axis name',
fontColor: '#000000',
fontSize: 10
},
ticks: {
fontColor: "black",
fontSize: 14
}
}]
}
}
Please refer to the Chart.js documentation for all the properties. Study all the properties before doing your implementation.
Happy coding!


React JS - Create React App
"chart.js": "^3.7.0",
"react-chartjs-2": "^4.0.0",
I struggled with this problem, unfortunately accepted answer did not work for me, but then I tweaked it little bit and made it work.
Here is what I ended up with, hope this will be helpful for someone...
const options = {
responsive: true,
maintainAspectRatio: false,
plugins: {
legend: {
position: 'top',
labels: {
color: "#ffffff",
}
},
title: {
display: true,
text: 'License Usage',
color: "#ffffff"
},
},
scales: {
yAxes: {
ticks: {
color: "#ffffff"
},
},
xAxes: {
ticks: {
color: "#ffffff"
},
}
},
};


if we set the options as below then the font color of axes label values changes. For example I tried it on jsfiddle and it worked. The same also worked for my chart in rails app.
...
options: {
scales: {
yAxes: [{
ticks: {
beginAtZero:true,
fontColor:'red'
}
}]
}
}
...


To change your chart object ticks and axes labels, do like so:
let changeItemColor = (item) => {
item.scaleLabel.fontColor = color;
item.ticks.fontColor = color;
item.ticks.minor.fontColor = color;
item.ticks.major.fontColor = color;
};
chart.options.scales.xAxes.forEach((item) => changeItemColor(item));
chart.options.scales.yAxes.forEach((item) => changeItemColor(item));
chart.update();

Related

How to remove Label from charts.js

I am using charts.js to create a charts for my website.
I am unable the remove the legend from the chart.
I did not found the solution. This is the first time I am using charts.js library.
code:
const ctx1 = document.getElementById('yearWise').getContext('2d');
const yearWise = new Chart(ctx1, {
type: 'bar',
plugins: [ChartDataLabels],
data: {
legend: 'options',
labels: ['2018-19','2019-20','2020-21','2021-22'],
datasets: [{
data: [90,400,5245,5122],
backgroundColor: [
// 'rgba(255, 99, 132, 0.5)',
'rgba(70, 132, 238, 0.5)',
],
borderColor: [
// 'rgba(255, 99, 132, 1)',
'rgba(70, 132, 238, 1)',
],
borderWidth: 1
}]
},
options: {
legend: {
display: false,
},
responsive: true,
scales: {
y: {
beginAtZero: true,
}
},
plugins: {
title: {
display: true,
text: 'Programs Conducted - Year Wise',
},
datalabels: {
anchor: 'end',
align: 'end',
labels: {
value: {
color: 'rgba(70, 132, 238, 1)'
}
}
},
},
}
});
Thanks in advance.

Here is the documentation
https://www.chartjs.org/docs/latest/configuration/legend.html
you can simply set legend.display to false.
options: {
plugin: {
legend: {
display: false,
}
}
}
You can try it here
https://codesandbox.io/s/wonj2xn23w?file=/src/index.js

impossible to remove scale from radar chart (chart.js)

I have been trying all day to remove the scale of a radar chart in chart js. Although the chart works just fine, nothing seems to be working to remove the scale. Unfortunately the documentation is not that helpful for that issue.
here is what the graph looks like. The scale looks the same everytime. Clearing cache from browser does not help either.
here is the code for the chart:
function setChart(){
var ctx = document.getElementById('myChart').getContext('2d');
var myChart = new Chart(ctx, {
type: 'radar',
data: {
labels: ['classA','classB','classC','classD'],
datasets: [{
label: 'revenue proportion per class',
data: [0.25, 0.3, 0.15, 0.3],
backgroundColor: [
'rgba(255, 99, 132, 0.2)',
],
borderColor: ['rgba(255, 99, 132, 0.2)'],
borderWidth: 5
},
{
label: 'proportion of item quantity per class',
data: [0.25, 0.3, 0.15, 0.3],
backgroundColor: [
'rgba(54, 162, 235, 0.2)',
],
borderColor: ['rgba(54, 162, 235, 0.2)'],
borderWidth: 5
}
],
and the options:
options: {
scale: {
ticks:{
label: false,
min: 0,
max: 1,
fixedStepSize: 4,
showLabelBackdrop: false,
fontSize: 0,
color: "#eee"
}
}
options: {
scale: {
ticks:{
display: false
}
}
I am doing something stupid? Any help on that would be welcomed!

options: {
scales: {
r: {
pointLabels: {
display: false // Hides the labels around the radar chart
},
ticks: {
display: false // Hides the labels in the middel (numbers)
}
}
}
}

The linear radial axis documentation lists four configuration options (as of v2.9.3):
angleLines
gridLines
pointLabels
ticks
Each of these is an object that supports the display property. Specifying display: false in all four objects removes the scale.
options: {
scale: {
angleLines: {
display: false
},
gridLines: {
display: false
},
pointLabels: {
display: false
},
ticks: {
display: false
},
}
}
Here's a working example:
new Chart('myChart', {
type: 'radar',
data: {
labels: ['A', 'B', 'C', 'D'],
datasets: [{
label: 'Series 1',
data: [0.25, 0.3, 0.15, 0.3],
}]
},
options: {
scale: {
angleLines: {
display: false
},
gridLines: {
display: false
},
pointLabels: {
display: false
},
ticks: {
display: false
},
}
}
});
<script src="https://cdn.jsdelivr.net/npm/chart.js#2.9.3/dist/Chart.min.js"></script>
<canvas id="myChart"></canvas>

chart.js-datalabels-plugins don't work

I'm trying to use chartjs-datalabels-plugin to show values on the chart. but I can't make it work on jsfiddle
Here's my code
<div class="graph">
<div class="chart-legend">
</div>
<div class="chart">
<canvas id="myChart" height = 60></canvas>
</div>
</div>
I import chartjs-datalabels-plugin in jsfiddle and then in options I enable the display option to true. but no value is shown in the chart.
var ctx = $('#myChart');
ctx.height(100);
var myChart = new Chart(ctx, {
....
maintainAspectRatio: false,
options: {
plugins: {
datalabels: {
color: 'black',
display: true,
font: {
weight: 'bold'
},
formatter: Math.round
}
},
legend: {
display: false
},
maintainAspectRatio: false,
scales: {
yAxes: [{
stacked: true,
gridLines: {
display: false,
drawBorder: false,
},
ticks: {
beginAtZero: true,
},
barThickness: 9
}],
xAxes: [{
stacked: true,
gridLines: {
display: false,
drawBorder: false,
},
ticks: {
beginAtZero: true,
suggestedMax: 100,
display: false
},
barThickness: 9
}]
}
}
});

Datalabels plugin requires Chart.js 2.7.0 or later.
In your fiddle you used 2.4.0 version.
var ctx = $('#myChart');
ctx.height(100);
var myChart = new Chart(ctx, {
type: 'horizontalBar',
data: {
height: 200,
labels: ["Red"],
datasets: [{
label: '# of Votes',
data: [12],
backgroundColor: [
'#F4B266',
'rgba(54, 162, 235, 0.2)',
'rgba(255, 206, 86, 0.2)',
'rgba(75, 192, 192, 0.2)',
'rgba(153, 102, 255, 0.2)',
'rgba(255, 159, 64, 0.2)'
],
borderWidth: 1
},
{
label: '# of Votes',
data: [18],
backgroundColor: [
'#AEB7B2',
'rgba(54, 162, 235, 0.2)',
'rgba(255, 206, 86, 0.2)',
'rgba(75, 192, 192, 0.2)',
'rgba(153, 102, 255, 0.2)',
'rgba(255, 159, 64, 0.2)'
],
borderWidth: 1
}
]
},
maintainAspectRatio: false,
options: {
plugins: {
datalabels: {
color: 'black',
display: function(context) {
return context.dataset.data[context.dataIndex] > 15;
},
font: {
weight: 'bold'
},
formatter: Math.round
}
},
legend: {
display: false
},
maintainAspectRatio: false,
scales: {
yAxes: [{
stacked: true,
gridLines: {
display: false,
drawBorder: false,
},
ticks: {
beginAtZero: true,
},
barThickness: 9
}],
xAxes: [{
stacked: true,
gridLines: {
display: false,
drawBorder: false,
},
ticks: {
beginAtZero: true,
suggestedMax: 100,
display: false
},
barThickness: 9
}]
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.2/Chart.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-datalabels#0.2.0/dist/chartjs-plugin-datalabels.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="graph">
<div class="chart-legend">
</div>
<div class="chart">
<canvas id="myChart" height = 60></canvas>
</div>
</div>

chart.js My DATA doesn't go along with the label,

I'm using chart.js on a project, a canvas on the html.
However, the data i'm inputting there doesn't go along with the label.
The data bars are not following the axes properly. Is there a way to add a padding, to the bar? Or something similar?
I've tried many ways, but can't get it right.
Here is my config:
$(window).on("load", function(){
//Get the context of the Chart canvas element we want to select
var ctx = $("#bar-multi-axis");
// Chart Options
var chartOptions = {
responsive: true,
maintainAspectRatio: false,
responsiveAnimationDuration:500,
hoverMode: 'label',
stacked: false,
title:{
display:false,
text:"Chart.js Bar Chart - Multi Axis"
},
scales: {
xAxes: [{
type: "linear", // only linear but allow scale type registration. This allows extensions to exist solely for log scale for instance
display: true,
position: "bottom",
id: "x-axis-1",
gridLines: {
color: "#f3f3f3",
drawTicks: true,
},
scaleLabel: {
display: true,
}
}, {
type: "linear", // only linear but allow scale type registration. This allows extensions to exist solely for log scale for instance
display: false,
position: "bottom",
id: "x-axis-2",
gridLines: {
drawOnChartArea: false
}
}],
yAxes: [{
display: true,
gridLines: {
color: "#f3f3f3",
drawTicks: true,
},
scaleLabel: {
display: false,
}
}]
}
};
// Chart Data
var chartData = {
labels: ["Ações", "Opções", "Termo", "BM&F", "Garantias","Tesouro Direto","Financeiro","BTC","Renda Fixa","Clubes e fundos"],
datasets: [{
label: "Ações",
data: [45],
backgroundColor: "#5175E0",
hoverBackgroundColor: "rgba(81,117,224,.8)",
borderColor: "transparent",
xAxisID: "x-axis-1",
}, {
label: "Opções",
data: [28],
backgroundColor: "#16D39A",
hoverBackgroundColor: "rgba(22,211,154,.8)",
borderColor: "transparent",
xAxisID: "x-axis-1",
},
{
label: "Termo",
data: [-40],
backgroundColor: "#F98E76",
hoverBackgroundColor: "rgba(249,142,118,.8)",
borderColor: "transparent",
xAxisID: "x-axis-1",
},
{
label: "BM&F",
data: [25],
backgroundColor: "#F00E76",
hoverBackgroundColor: "rgba(249,142,118,.8)",
borderColor: "transparent",
xAxisID: "x-axis-1",
},
{
label: "Garantias",
data: [-16],
backgroundColor: "#E12E76",
hoverBackgroundColor: "rgba(249,142,118,.8)",
borderColor: "transparent",
xAxisID: "x-axis-1",
},
{
label: "Tesouro Direto",
data: [10],
backgroundColor: "#E98A76",
hoverBackgroundColor: "rgba(249,142,118,.8)",
borderColor: "transparent",
xAxisID: "x-axis-1",
},
{
label: "Financeiro",
data: [-12],
backgroundColor: "#F98A76",
hoverBackgroundColor: "rgba(249,142,118,.8)",
borderColor: "transparent",
xAxisID: "x-axis-1",
},
{
label: "BTC",
data: [50],
backgroundColor: "#F18E76",
hoverBackgroundColor: "rgba(249,142,118,.8)",
borderColor: "transparent",
xAxisID: "x-axis-1",
},
{
label: "Renda Fixa",
data: [24],
backgroundColor: "#D98E76",
hoverBackgroundColor: "rgba(249,142,118,.8)",
borderColor: "transparent",
xAxisID: "x-axis-1",
},
{
label: "Clubes e fundos",
data: [-24],
backgroundColor: "#A98E76",
hoverBackgroundColor: "rgba(249,142,118,.8)",
borderColor: "transparent",
xAxisID: "x-axis-1",
}]
};
var config = {
type: 'horizontalBar',
// Chart Options
options : chartOptions,
data : chartData
};
// Create the chart
var lineChart = new Chart(ctx, config);
});

I suggest to use only one dataset and define specific color for each bar using an array asbackgroundColor property:
datasets: [{
label: "my set",
data: [45, 28, -40, 25, -16, 10, -12, 50, 24, -24],
backgroundColor: ["rgba(255, 99, 132, 0.6)", "rgba(255, 159, 64, 0.6)", "rgba(255, 205, 86, 0.6)", "rgba(75, 192, 192, 0.6)", "rgba(54, 162, 235, 0.6)", "rgba(153, 102, 255, 0.6)", "rgba(201, 203, 207, 0.6)", "rgba(155, 99, 132, 0.6)","rgba(255, 99, 32, 0.6)"],
borderColor: "transparent",
xAxisID: "x-axis-1",
}]
Check my fiddle: https://jsfiddle.net/beaver71/2hp160zh/
// Chart Options
var chartOptions = {
responsive: true,
maintainAspectRatio: false,
responsiveAnimationDuration:500,
hoverMode: 'label',
stacked: false,
legend: {display:false,},
title:{
display:false,
text:"Chart.js Bar Chart - Multi Axis"
},
scales: {
xAxes: [{
type: "linear", // only linear but allow scale type registration. This allows extensions to exist solely for log scale for instance
display: true,
position: "bottom",
id: "x-axis-1",
gridLines: {
color: "#f3f3f3",
drawTicks: true,
},
scaleLabel: {
display: true,
}
}, {
type: "linear", // only linear but allow scale type registration. This allows extensions to exist solely for log scale for instance
display: false,
position: "bottom",
id: "x-axis-2",
gridLines: {
drawOnChartArea: false
}
}],
yAxes: [{
display: true,
type: 'category',
gridLines: {
color: "#f3f3f3",
drawTicks: true,
},
scaleLabel: {
display: false,
}
}]
}
};
// Chart Data
var chartData = {
labels: ["Ações", "Opções", "Termo", "BM&F", "Garantias","Tesouro Direto","Financeiro","BTC","Renda Fixa","Clubes e fundos"],
datasets: [{
label: "my set",
data: [45, 28, -40, 25, -16, 10, -12, 50, 24, -24],
backgroundColor: ["rgba(255, 99, 132, 0.6)", "rgba(255, 159, 64, 0.6)", "rgba(255, 205, 86, 0.6)", "rgba(75, 192, 192, 0.6)", "rgba(54, 162, 235, 0.6)", "rgba(153, 102, 255, 0.6)", "rgba(201, 203, 207, 0.6)", "rgba(155, 99, 132, 0.6)","rgba(255, 99, 32, 0.6)"],
borderColor: "transparent",
xAxisID: "x-axis-1",
}]
};
var config = {
type: 'horizontalBar',
options : chartOptions,
data : chartData
};
var lineChart = new Chart('myChart', config);
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.1/Chart.bundle.min.js"></script>
<canvas id="myChart" width="400" height="600"></canvas>

ChartJS: horizontalBar Label Error

I'm with a error on my HorizontalBar Chart. Basically when i mouse hover on some bar, it should show me the Label name and Value of this bar. But in my chart it shows Label and Label, without value.
Here is a pic: https://i.stack.imgur.com/NGNPM.jpg
it should show me : "Top 10 Clientes and 2400 below"
This is totally static code, here is:
var gerarGraficoDeBarrasHorizontal = function (name, labels, components){
var myChart = new Chart(name, {
type: 'horizontalBar',
data: {
labels: labels,
datasets: components
},
options: optionsSemLegenda
});
}
// OBJECT TO CLARIFY THE CHART CREATION
var barrasHorizontal = [{
data: [2500, 5000],
backgroundColor: ['rgba(255, 99, 132, 0.2)', 'rgba(54, 162, 235, 0.2)'],
borderColor: ['rgba(255,99,132,1)', 'rgba(54, 162, 235, 1)'],
borderWidth: 1
}];
// CREATE CHART
gerarGraficoDeBarrasHorizontal('topDezClientesxFaturamentoTotal', ["Top 10
Clientes", "Faturamento Total"], barrasHorizontal);
Thanks a lot!!
#Edit #1
var optionsSemLegenda = new Object();
optionsSemLegenda = {
scales: {
yAxes: [{
ticks: {
beginAtZero: true
}
}],
xAxes: [{
ticks: {
beginAtZero: true
}
}]
},
legend: {
display: false
},
tooltips: {
callbacks: {
label: function (tooltipItem) {
return tooltipItem.yLabel;
}
}
}
}

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