How to increase space between label and chart area in chart.js - javascript

All my labels are on the top of the bars. I can see this
this image
but I want that would be like this
this image
padding doesn't work for xAxes, but works for yAxes
legend: {display: false},
scales: {
xAxes: [{
position: 'top',
stacked: true,
ticks: {
stepSize: 1,
min: 0,
autoSkip: false,
fontColor: '#3f7ba2',
fontStyle: 600,
fontFamily: 'Italic',
},
gridLines: {
color: '#dedfe7',
tickMarkLength: 0,
}
}],
yAxes: [{
stacked: true,
ticks: {
min: 0,
fontColor: '#62aae8',
padding: 5
},
gridLines: {
color: '#dedfe7' //b5cce2
}
}],
}

This is an issue that only persists in chart.js version 2.6.0 and lower. As you can read in the release notes under the bug fixes it says that in PR 4403 ticks.padding option now applies to vertical and horizontal scales.
So to solve your issue you will need to update to a version of chart.js higher or equal to 2.7.0
const 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: {
scales: {
xAxes: [{
position: 'top',
ticks: {
padding: 100
}
}],
}
}
}
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/2.7.0/Chart.js"></script>
</body>

Related

How to create chart with clickable bar using chart.js?

We need a chart with the ability to click on bar in this chart
and on click display element (div) and display data on this div using HTML and jquery
var xyValues = [
{x:50, y:7},
{x:60, y:8},
{x:70, y:8},
{x:80, y:9},
{x:90, y:9},
{x:100, y:9},
{x:110, y:10},
{x:120, y:11},
{x:130, y:14},
{x:140, y:14},
{x:150, y:15}
];
new Chart("myChart", {
type: "scatter",
data: {
datasets: [{
pointRadius: 4,
pointBackgroundColor: "rgb(0,0,255)",
data: xyValues
}]
},
options: {
legend: {
display: false
},
scales: {
xAxes: [{
ticks: {
min: 40,
max: 160
}
}],
yAxes: [{
ticks: {
min: 6,
max: 16
}
}],
}
}
});
<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
<div>
<canvas id="myChart"></canvas>
</div>
I think you could add onClick option in the chart options.
The option accepts a function as value.
Here is the doc: https://www.chartjs.org/docs/2.9.4/general/interactions/events.html
options: {
onClick(event, clickedElemeents) {
.... your logic
},
legend: {display: false},
scales: {
xAxes: [{ticks: {min: 40, max:160}}],
yAxes: [{ticks: {min: 6, max:16}}],
}
}

How to align vertical axis area on two charts in chart.js

in chart.js I'd like to have 2 charts (one under another) with ticks syncronized. Currently it looks so
as you can see dates are not aligned. Setting equal min-max values is impossible here since values are too different.
I think the solution would be to set equal width to both y-axes. The case is complicated by the second y-axes in upper chart, but may be it's possible to place an empty right scale on the bottom chart?
My current options for the top chart are
options: {
tooltips: {
enabled: true,
trigger: 'axis',
intersect: false,
mode : 'index'
},
responsive: true,
maintainAspectRatio: false,
layout: {
padding: {
// left: 500,
right: 0,
top: 0,
bottom: 0,
},
},
scales: {
xAxes: [
{
boundaryGap : false,
gridLines: {
display: false,
},
ticks: {
// Include a dollar sign in the ticks
callback: function(value, index, values) {
return value.split('.').slice(0,2).join('.');
}
},
},
],
yAxes: [
{
id: keys[0],
position: "left",
gridLines: {
drawBorder: false,
zeroLineColor: "rgba(147, 147, 147, 0.2)",
color: "rgba(147, 147, 147, 0.2)",
},
ticks: {
padding: 20,
fontColor: "#2C71C3",
beginAtZero: false,
},
}, {
id: keys[1],
position: "right",
gridLines: {
drawBorder: false,
color: "rgba(147, 147, 147, 0)",
},
ticks: {
padding: 20,
fontColor: "#C6C6C6",
beginAtZero: false,
},
},
],
},
and for the bottom one
options: {
tooltips: {
enabled: true,
trigger: 'axis',
intersect: false,
mode : 'index'
},
responsive: true,
maintainAspectRatio: false,
layout: {
padding: {
// left: 500,
right: 0,
top: 0,
bottom: 0,
},
},
scales: {
yAxes: [
{
ticks: {
reverse: true,
},
},
],
xAxes: [
{
gridLines: {
display: false,
},
ticks: {
// Include a dollar sign in the ticks
callback: function(value, index, values) {
return value.split('.').slice(0,2).join('.');
}
},
},
],
},
I dont know how to or if it is even possible to define a width for a scale, but what you can do is add a second Y axis on the right with the grid dissabled and the callback returning a few spaces for spacing
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: {
scales: {
yAxes: [{
position: 'left'
},
{
position: 'right',
gridLines: {
display: false
},
ticks: {
callback: () => (' ')
}
}
]
}
}
}
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/2.9.4/Chart.js"></script>
</body>
Little late to the party, but it is possible to set a fixed width. I updated #LeeLenalee snippet with an example (both y axis have a 100px width in this case). This way, it is possible to align both graphs without any problem. Make sure to set a width that isn't too small for the labels though!
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: {
scales: {
yAxes: [{
position: 'left',
afterFit: (scaleInstance) => scaleInstance.width = 100,
},
{
position: 'right',
afterFit: (scaleInstance) => scaleInstance.width = 100,
gridLines: {
display: false
},
ticks: {
callback: () => ''
}
}
]
}
}
}
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/2.9.4/Chart.js"></script>
</body>

Horizontal spacing in ChartJS Bar Graph

I am using Chart.js plugin.
I want to reduce the horizontal spacing.
Image 1 : I try
Image 2 : I want
JSFiddle Link Here!
HTML Code Here
<script src="https://cdn.jsdelivr.net/npm/chart.js#2.8.0"></script>
<canvas id="myChart" width="800" height="300"></canvas>
CSS Code Here
canvas {
margin:0 auto;
}
JS Code Here
var ctx = document.getElementById('myChart').getContext('2d');
var chart = new Chart(ctx, {
type: 'bar',
data: {
labels: ['April', 'May'],
datasets: [{
label: 'facebook',
borderColor: 'rgba(0,0,0,0)',
backgroundColor: '#3b5998',
data: [179, 201]
}, {
label: 'instagram',
borderColor: 'rgba(255,255,255,0)',
backgroundColor: '#e8361c',
data: [31, 47]
}]
},
options: {
responsive: false,
scales: {
yAxes: [{
display: false,
ticks: {
suggestedMin: 0
},
gridLines: {
display:false
}
}],
xAxes: [{
display:true,
barPercentage: 0.7,
categoryPercentage: 0.3,
gridLines: {
display:false
}
}]
},
legend: {
position:'bottom'
},
animation:false
}
});
I want to reduce the interval between categories. I do not know if there is a corresponding option. Please help me.

beginAtZero not working on mixed chart

I am trying to make a chart with multiple lines and bars but they need to start at 0 and it works fine for the bar's but not one the lines.
I tried setting a id for the options setting options in the dataset but nothings works
Here is my code:
<canvas id="barLine" width="400" height="400"></canvas>
#section('js')
#parent
<script>
var ctx = document.getElementById("barLine");
new Chart(ctx, {
type: 'bar',
data: {
labels: ['contacten', 'orders', 'logistiek'],
datasets: [{
label: 'Aantal',
data: [5.3, 5.5, 5.7],
backgroundColor: colors,
borderColor: colors,
borderWidth: 1
}, {
label: 'Aantal',
data: [5.7, 6.5, 6],
backgroundColor: colors,
borderColor: colors,
borderWidth: 1
}, {
label: 'Aantal',
data: [7.8, 5, 7],
backgroundColor: colors,
borderColor: colors,
borderWidth: 1
}, {
label: 'Target 2016',
data: [5.0, 5.0, 5.0],
type: 'line',
fill: false,
pointHitRadius: 10,
pointRadius: 0,
pointStyle: 'rect'
}, {
label: 'Target 2017',
data: [7.5, 7.5, 7.5],
type: 'line',
fill: false,
pointHitRadius: 10,
pointRadius: 0,
pointStyle: 'rect'
}, {
label: 'Target 2018',
data: [7, 7, 7],
type: 'line',
fill: false,
pointHitRadius: 10,
pointRadius: 0,
pointStyle: 'rect',
backgroundColor:'purple',
borderColor:'purple',
beginAtZero:true
}]
},
options: {
scales: {
yAxes: [{
ticks: {
max: 10,
min: 0
},
scaleLabel: {
display: true,
labelString: "Cijfer"
}
}]
}
}
});
</script>
#stop
So it needs to work that the lines (target 2016......) need to start at 0. I can make it work with just a line but with mixed I cannot make it so.
beginAtZero is an attribute of ticks so you need to put it inside ticks, which is part of options:
options:{
scales:{
yAxes:[{
ticks:{
beginAtZero: true
}
}]
}
}

Chart JS: Ignoring x values and putting point data on first available labels

I am making a line chart in chart.js, and am having an issue where I am trying to plot point data on the line but it is ignoring the x values I am giving, and instead putting them on the first available label.
this.myLineChart = new Chart(this.ctx, {
type: 'line',
data: {
labels: [0,2,4,6,8,10],
datasets: [{
label: 'mylabel1',
fill: false,
backgroundColor: 'blue',
borderColor: 'blue',
data: [{
x: 2.5,
y: 85
}, {
x: 3.5,
y: 85
}]
}]
},
options: {
title: {
display: true,
text: 'mytitle1'
},
scales: {
yAxes: [{
display: true,
ticks: {
suggestedMin: 70,
suggestedMax: 100
}
}]
}
}
});
The result I get is this:
But instead I would like this line to be at the x values 2.5 and 3.5, so that it lies in between the 2 and 4 labels.
What should I change in the code to make it behave as I want?
In that case, you don't need to use labels array. Instead set x-axis' type to linear and minimum and maximum value for x-axis' ticks (perhaps stepSize as well) in your chart options, like so :
xAxes: [{
type: 'linear',
ticks: {
suggestedMin: 0,
suggestedMax: 10,
stepSize: 2
}
}]
ᴡᴏʀᴋɪɴɢ ᴇxᴀᴍᴘʟᴇ ⧩
myLineChart = new Chart(ctx, {
type: 'line',
data: {
datasets: [{
label: 'mylabel1',
fill: false,
backgroundColor: 'blue',
borderColor: 'blue',
data: [{
x: 2.5,
y: 85
}, {
x: 3.5,
y: 85
}]
}]
},
options: {
title: {
display: true,
text: 'mytitle1'
},
scales: {
xAxes: [{
type: 'linear',
ticks: {
suggestedMin: 0,
suggestedMax: 10,
stepSize: 2 //interval between ticks
}
}],
yAxes: [{
display: true,
ticks: {
suggestedMin: 70,
suggestedMax: 100
}
}]
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.0/Chart.min.js"></script>
<canvas id="ctx"></canvas>

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