Is there anyway I can customize the X-axis label to words instead of numbers scale?
I tried inserting the labels attribute in my data, but it doesn't work.
this is my code:
var bubbleChartData =
{
datasets: [
{
label: "My First dataset",
backgroundColor: randomColor(),
data: [4, 2, 3, 4, 5]
}],
labels: [
"Bad",
"Average",
"Good",
"Very Good",
"Perfect"
]
};
window.onload = function() {
var ctx = document.getElementById("canvas").getContext("2d");
window.myChart = new Chart(ctx, {
type: 'bubble',
data: bubbleChartData,
xAxisID: 'testing',
options: {
responsive: true,
title:{
display: true,
text:'Chart.js Bubble Chart'
},
}
});
};
this is what i got:
Use a callback for xAxes into your options:
options: {
responsive: true,
title:{
display: true,
text:'Chart.js Bubble Chart'
},
scales: {
xAxes: [{
ticks: {
callback: function(value, index, values) {
return 'value is ' + value;
}
}
}]
}
}
Related
This is using charts.js. This code only makes the line graph but the title, x axis and y axis does not show. I want to add title, and the names for those 2 axis onto the graph. what is wrong and how do you fix it? I also want to make the y axis to start from 0 and up.
async function chartDisplay() {
await getData1();
await getData2();
const ctx = document.getElementById('chart').getContext('2d');
const myChart = new Chart(ctx, {
type: 'line',
data: {
labels: xLabels,
datasets: [{
data: ratingDataI,
label: "data1",
borderColor: "#3E95CD",
fill: false
},
{
data: ratingDataA,
label: "data2",
borderColor: "#3E95CD",
fill: false
}
]
},
options: {
responsive: true,
title: {
display: true,
text: 'Chart.js Line Chart'
},
tooltips: {
mode: 'label',
},
hover: {
mode: 'nearest',
intersect: true
},
scales: {
x: [{
display: true,
scaleLabel: {
display: true,
labelString: 'Dates'
}
}],
y: [{
display: true,
scaleLabel: {
display: true,
labelString: 'Value'
}
}]
}
}
});
}
the x and y should not be arrays but objects, also the scaleLabel prop is called title now. For all the changes please read the migration guide (https://www.chartjs.org/docs/master/getting-started/v3-migration.html)
Example:
var options = {
type: 'line',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
borderColor: 'pink'
}]
},
options: {
scales: {
y: {
beginAtZero: true,
title: {
display: true,
text: 'yAxis'
}
},
x: {
title: {
display: true,
text: 'xAxis'
}
}
}
}
}
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/3.4.1/chart.js"></script>
</body>
Hi I am trying to show some bar charts using charts js, my problem is that the first column isn't showing properly.
This is my code:
var options = {
scales: {
yAxes: [{
display: true
}],
xAxes: [{
display: false
}]
},
legend: {
display: false
}
};
var dataD = {
labels: ["2020-09-01 18:05:33", "2020-10-13 11:08:28"],
datasets: [{
label: "PA",
data: [132, 139],
backgroundColor: "#4cb6cb"
}]
};
var methods = new Chart($("#line192"), {
type: "bar",
data: dataD,
animation: true,
options: options
});
And this is the jsfiddle example
Any thoughts? thank you!
By default, the axes start at your minimum value. Set ticks.beginAtZero to true on your Y-axis to display and your first bar will be visible:
var options = {
scales: {
yAxes: [{
display: true,
ticks: {
beginAtZero: true
}
}],
xAxes: [{
display: false
}]
},
legend: {
display: false
}
};
var dataD = {
labels: ["2020-09-01 18:05:33", "2020-10-13 11:08:28"],
datasets: [{
label: "PA",
data: [132, 139],
backgroundColor: "#4cb6cb"
}]
};
var methods = new Chart($("#line192"), {
type: "bar",
data: dataD,
animation: true,
options: options
});
Here is the fixed jsfiddle
Given a label of dates from the pass 9 days and a data set of numbers(2.5,1.5 etc), I want the the numbers/labels at the y-axis to be whole numbers from 1-5 while maintaining the points. What I'm trying to say is I want to have a fixed number of rows in the grid and I'm clueless on how to do it. Can anyone help me?
Current Graph:
Expected Graph:
Option 1/2: stacked
The shortest way:
yAxes: [{
stacked: true,
}]
https://www.chartjs.org/docs/latest/charts/bar.html#stacked-bar-chart
/* data */
var data = {
labels: ["Africa", "Asia", "Europe", "America"],
datasets: [{
/* data */
label: "Data label",
backgroundColor: ["#3e95cd", "#8e5ea2","#3cba9f", '#1d49b8'],
data: [5.6,6.7,7.5, 8.6]
}]
};
var options = {
responsive: true,
title: {
text: 'Hello',
display: true
},
scales: {
xAxes: [{
stacked: false,
ticks: {
},
}],
yAxes: [{
stacked: true,
}]
}
};
var myChart = new Chart(document.getElementById("chart"), {
type: 'bar',
data: data,
options: options
});
<canvas id="chart"></canvas>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.min.js"></script>
Option 2/2: step-size
https://www.chartjs.org/docs/latest/axes/cartesian/linear.html#step-size
More control ==> set step size (To 1 in your example):
yAxes: [{
stacked: true,
ticks: {
stepSize: 1
}
}]
/* data */
var data = {
labels: ["Africa", "Asia", "Europe", "America"],
datasets: [{
/* data */
label: "Data label",
backgroundColor: ["#3e95cd", "#8e5ea2","#3cba9f", '#1d49b8'],
data: [5.0,6.7,7.5, 8.6]
}]
};
var options = {
responsive: true,
title: {
text: 'Hello',
display: true
},
scales: {
xAxes: [{
stacked: false,
ticks: {
},
}],
yAxes: [{
stacked: false,
ticks: {
stepSize: 1
}
}]
}
};
var myChart = new Chart(document.getElementById("chart"), {
type: 'bar',
data: data,
options: options
});
<canvas id="chart"></canvas>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.min.js"></script>
I following the example of Chart.js for a stacked colum graph
http://www.chartjs.org/samples/latest/charts/bar/stacked-group.html
But when I try to replicate for my graph... the stack parameter does not works.
I use the version 2.4.
Here is my code
var color = Chart.helpers.color;
var barChartData = {
labels: [1,2,3,4,5,6,7]<?php // echo ($asse) ?> ,
datasets: [
{
label: '2016',
backgroundColor: color('#FCB441').alpha(0.5).rgbString(),
borderColor: '#FCB441',
borderWidth: 1,
data: [2,4,6,8,10,12,14] ,
stack: 0,
},
{
label: '2017',
backgroundColor: color('#FF0000').alpha(0.5).rgbString(),
borderColor: '#FF0000',
borderWidth: 2,
data: [2,4,6,8,10,12,14] ,
stack: 0,
},
{
label: '3',
backgroundColor: color('#FFFF00').alpha(0.5).rgbString(),
borderColor: '#FFFF00',
borderWidth: 2,
data: [1,2,3,4,5,6,7] ,
stack: 1,
},
]
};
window.onload = function() {
var ctx = document.getElementById('Chart_<?php echo $this->id ?>').getContext('2d');
window.myBar = new Chart(ctx, {
type: 'bar',
data: barChartData,
options: {
tooltips: {
mode: 'index',
intersect: false
},
responsive: true,
scales: {
xAxes: [{
stacked: true
}],
yAxes: [{
stacked: true
}]
}
}
});
};
`});
Here is my graph:
My Graph
I still don't get it where's my mistake, it seems like the demo code.
Thanks in advice.
Phil
Here's a simple chart.js horizontal bar chart I'm using:
var myBarChart = new Chart(ctx,{
type: 'horizontalBar',
data: {
labels: [
"Foo",
"Bar",
"Baz"
],
datasets: [
{
data: [725000, 600000, 900000],
backgroundColor: [
"#ccf6ec",
"#ff6654",
"#009784"
],
hoverBackgroundColor: [
"#ccf6ec",
"#ff6654",
"#009784"
]
}]
},
options: {
legend: {
display: false
},
scales: {
xAxes: [{
display: false
}],
yAxes: [{
display: false
}],
}
}
});
If I change the values to be closer to each other I see the three bars. I need it to draw the bars so they are always visible, even if the values are widely different.
Is there a configuration I missed? How can I fix this?
For some reason, chart.js uses the smallest amount in data as minimum ticks value. Simply adding ticks.min: 0 apparently solves the issue:
var ctx = document.getElementById('chart')
var myBarChart = new Chart(ctx, {
type: 'horizontalBar',
data: {
labels: [
"Foo",
"Bar",
"Baz"
],
datasets: [{
data: [725000, 600000, 900000],
backgroundColor: [
"#ccf6ec",
"#ff6654",
"#009784"
],
hoverBackgroundColor: [
"#ccf6ec",
"#ff6654",
"#009784"
]
}]
},
options: {
legend: {
display: false
},
scales: {
xAxes: [{
display: false,
ticks: {
min: 0
}
}],
yAxes: [{
display: false
}],
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.5.0/Chart.min.js"></script>
<canvas id="chart" width="400" height="400"></canvas>