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>
Related
Chart.js translation for plotting on frontend side in Laravel. There is a yield of 3 months dates and their datas. How should I fit charjs that overlap and not all dates are written at the end of x? (texts are overlapping, i dont want it, and I want all the dates to be on the x-axis, I think chartjs skipped it because couldn't fit it.) it is important can you contact with me
var myChart1 = new Chart(ctx1, {
type: 'bar',
data: {
labels: dates,
datasets: [{
label: 'BACKLOG ON HOLD INCIDENTS AVG PERFORMANCE- BURSA',
data: results,
backgroundColor: [
'rgba(76, 196, 23, 0.6)'
],
borderColor: [
'rgba(219, 249, 219, 1)',
],
borderWidth: 1,
}]
},
plugins: [ChartDataLabels],
options: {
plugins:{
legend:{
display:true
},
datalabels:{
color:'blue',
anchor:'end',
font:{
weight:'bold',
size:8
}
}
},
scales: {
y: {
beginAtZero: true
},
x: {
ticks: {
maxRotation: 90,
minRotation: 90,
font: {
size: 8,
}
}
}
},
animation: {
duration: 0
}
}
});
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
I have a very simple (horizontal) bar chart using Chart.js latest version.
https://codepen.io/decho/pen/abZYrxO
It has 3 datasets, Foo, Bar & Baz. The problem is that when I hover with the mouse over a bar (dataset), all 3 of them get highlighted instead of just the one that mouse is over at.
Current behavior:
Expected behavior:
I have tried playing with the tooltip settings, but couldn't quite figure it out. So any idea on how can I achieve this?
Here is my current Chart configuration, also on Codepen:
const ctx = document.getElementById('canvas').getContext('2d');
new Chart(ctx, {
type: 'horizontalBar',
data: {
labels: ['Test'],
datasets: [
{
label: 'Foo',
data: [1],
backgroundColor: 'rgba(23, 83, 139, 0.5)',
borderColor: '#17538b',
borderWidth: 2,
hoverBackgroundColor: "#17538b",
hoverBorderColor: "#4444442b",
},
{
label: 'Bar',
data: [2],
backgroundColor: 'rgba(255, 85, 33, 0.5)',
borderColor: '#ff5521',
borderWidth: 2,
hoverBackgroundColor: "#ff5521",
hoverBorderColor: "#4444442b",
},
{
label: 'Baz',
data: [3],
backgroundColor: 'rgba(62, 211, 241, 0.5)',
borderColor: '#3ed3f1',
borderWidth: 2,
hoverBackgroundColor: "#3ed3f1",
hoverBorderColor: "#4444442b",
}
]
},
options: {
responsive: true,
maintainAspectRatio: false,
legend: {
position: 'bottom',
},
tooltips: {
mode: 'dataset',
intersect: true
},
scales: {
xAxes: [
{
display: true,
ticks: {
beginAtZero: true,
},
},
],
yAxes: [{
display: false,
ticks: {
beginAtZero: true,
},
}],
}
},
});
Any help is kindly appreciated.
Solved this myself: Apparently there is a a global option for hover modes:
options: {
hover: {
mode: 'dataset',
}
}
If anyone wonders as me, how this could be done for chart of type: 'line', just add these options:
options: {
elements: {
point: {
hitRadius: 1,
}
},
tooltips: {
mode: 'single',
},
hover: {
mode: 'dataset',
intersect: false
}
}
and also don´t forget to add colors for highlighting (for each dataset obviously):
datasets: [
{
label: "A",
data: [12, 19, 3, 5, 2, 3],
borderWidth: 3,
borderColor: '#ec5e5f',
hoverBorderColor: '#e41a1c',
pointHoverBackgroundColor: "#fff",
lineTension: 0.5,
}
]
For full example check out this codepen
I have this chart made with ChartJS. I've gotten it to work so far, but, when adding more data such as 2 lines.. The tooltip looses it's colors. I'm talking about the white boxes to the left of the values:
As you can see theres 2 lines. One for earnings and one for deposits. The deposit is the one at the bottom and the earnings are at the top. Why is the white square white? It should be same as the line?
Here's my code:
Chart:
var ctx = document.getElementById('orders_graph').getContext('2d');
var Order_chart = new Chart(ctx, {
// The type of chart we want to create
type: 'line',
// The data for our dataset
data: {
labels: [], // months
datasets: [{
label: 'Fortjenelse',
data: []
}]
},
// Configuration options go here
options:
{
responsive: true,
hover: {
mode: 'index',
intersect: false
},
spanGaps: true,
legend: {
display: false
},
tooltips: {
mode: 'index',
intersect: false,
callbacks: {
label: function(tooltipItem) {
return ' '+tooltipItem.yLabel+' DKK';
}
}
},
layout: {
// padding: { left: 0, right: 0, top: 10, bottom: 30}
},
scales:{
xAxes: [{
display: true //this will remove all the x-axis grid lines
}],
yAxes: [{
display: true, //this will remove all the x-axis grid lines
stacked: false,
ticks: {
beginAtZero: true
},
}],
}
}
});
Passing the data to the chart:
Order_chart.data.labels = order_array_parent_index;
Order_chart.data.datasets = [{
// Fortjenelse med renter
label: 'Profit',
data: order_array_parent,
fill: false,
lineTension: 0,
backgroundColor: [
'rgba(113, 217, 98, 0.2)',
],
borderColor: [
'rgba(113, 217, 98, 1)',
],
},
{
// Deposited amount
label: 'Deposit',
data: order_array_parent_deposits,
fill: false,
lineTension: 0,
backgroundColor: [
'rgba(255, 223, 82, 0.2)',
],
borderColor: [
'rgba(255, 223, 82, 1)',
],
},
]
Order_chart.update();
Any ideas on how to solve this?
Going through the Chart.js documentation, it seems like the tooltip bgColor isn't in an array, but just a color param. Try changing backgroundColor: [ the color ] to backgroundColor: 'rgba(x,x,x,x)' I don't have Chart.js, so I can't test, but I think that'll sort you.
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();