I drawn a chart using chart js like below
In this above chart i want to make a line thicker ( Pink Marked ) like other lines and also i want to remove x axis line ( Green Marked ). How can i do this please Help me.
Please see the fiddle Here Live Chart
var ganttchart = document.getElementById('bar-chart');
new Chart(ganttchart, {
type: 'line',
data: {
datasets: [
{
label: 'Scatter Dataset',
backgroundColor: "rgba(246,156,85,1)",
borderColor: "rgba(246,156,85,1)",
fill: false,
borderWidth : 15,
pointRadius : 0,
data: [
{
x: 0,
y: 9
}, {
x: 3,
y: 9
}
]
},
{
backgroundColor: "rgba(208,255,154,1)",
borderColor: "rgba(208,255,154,1)",
fill: false,
borderWidth : 15,
pointRadius : 0,
data: [
{
x: 3,
y: 7
}, {
x: 5,
y: 7
}
]
},
{
label: 'Scatter Dataset',
backgroundColor: "rgba(246,156,85,1)",
borderColor: "rgba(246,156,85,1)",
fill: false,
borderWidth : 15,
pointRadius : 0,
data: [
{
x: 5,
y: 5
}, {
x: 10,
y: 5
}
]
},
{
backgroundColor: "rgba(208,255,154,1)",
borderColor: "rgba(208,255,154,1)",
fill: false,
borderWidth : 15,
pointRadius : 0,
data: [
{
x: 10,
y: 3
}, {
x: 13,
y: 3
}
]
}
]
},
options: {
legend : {
display : false
},
scales: {
xAxes: [{
type: 'linear',
position: 'top',
gridLines: {
lineWidth:20
},
ticks : {
beginAtzero :true,
stepSize : 1
}
}],
yAxes : [{
gridLines: {
display:false,
},
ticks : {
beginAtZero :true,
max : 10,
display:false
}
}]
},
animation: {
duration: 0
},
hover: {animationDuration: 0}
}
});
You can find axes config options currently here: Axes - Chart.js Documentation
Axes config options has a global field display with the following description:
If set to false the axis is hidden from view. Overrides gridLines.display, scaleLabel.display, and ticks.display.
Here is how I have implemented it:
public chartOptions = {
scales: {
xAxes: [{
display: false,
}],
yAxes: [{
display: false,
}]
}
};
Just change border to false.
const config =
{
type: 'line',
data,
options: {
scales:{
y: {
beginAtZero: false,
border:{
display:false
}
},
x: {
beginAtZero: false,
border:{
display:false
}
}
}
}
}
}
Related
I'm graphing some stocks data and I wanted to put the volume in a smaller gray bar dataset at the bottom, like in Yahoo Finance.
What I want:
The small grey dataset is at the bottom.
What I get:
Three different Y scales and the size of the volume dataset is the same a the other.
My code:
When I create the chart:
new Chart(context, {
type: 'line',
data: {
labels: timestamps.map(n =>
(new Date(n * 1000)).toLocaleString()
),
datasets: [
dataset,
vdataset
]
},
options: {
maintainAspectRatio: false,
scales: {
xAxis: {
// type: 'time'
ticks: {
//autoSkip: true,
maxTicksLimit: 10
}
},
yAxes: [{
id: 'volume',
display: false
}],
y: {
beginAtZero: false
},
},
animation: {
duration: 0
},
plugins: {
autocolors: false,
annotation: {
annotations
}
},
tooltips: {
mode: 'nearest'
},
hover: {
intersect: false
}
}
});
The volume dataset:
{
type: 'bar',
label: `Volume`,
data: ...,
backgroundColor: 'transparent',
borderColor: 'grey',
fill: 'origin',
pointRadius: 0,
borderWidth: 2,
yAxisID: 'volume'
}
you need to give every dataset a yAxisID and then you should name your axis with that id like this:
Data:
var data = {
labels: labels,
datasets: [{
label: 'My First Dataset',
data: generateTestSeries(),
fill: false,
borderColor: 'rgb(75, 192, 192)',
tension: 0.1,
yAxisID: "something",
},
{
label: 'My Second Dataset',
data: generateTestSeries(),
fill: false,
borderColor: 'rgb(182, 50, 192)',
tension: 0.1,
yAxisID: "volume",
},
]
};
Scales:
scales: {
volume: {
axis: "y",
min: -80,
max: 60,
position: 'right',
},
something: {
axis: "y",
min: -20,
max: 70,
position: 'left',
}
}
Also you shouldn't have the list yAxes, that was how axes were defined in chartjs 2.x
Here is a fiddle to see this in use: JSFiddle
edit: If you want an invisible axis just set display to false as seen in the now updated Fiddle.
This is how options for my chart look like
options: {
legend: {
display: false
},
scales: {
xAxes: [
{
type: "time",
gridLines: {
display: false
},
ticks: {
padding: 15
}
}
],
yAxes: [
{
ticks: {
padding: 22,
min: 1,
max: 5,
stepSize: 1
},
position: "left",
gridLines: {
drawTicks: false
}
}
]
}
}
as you can see there is an option
gridLines: {
display: false
},
because of this there is no vertical lines on the chart.
What I want to do is to add only one vertical line on the end of the chart(right side of the chart)
Here is my live example https://codesandbox.io/s/line-chart-with-vanilla-js-and-chartjs-pi9fn?file=/src/index.js
This can be solved as follows:
Define data.labels in the chart configuration. Given your data, this could be done by extracting the x values of of the data objects using Array.map().
const labels = data.map(o => o.x);
Then you need to adapt xAxis.ticks in order to instruct Chart.js that ticks (including grid lines) have to be generated from user given labels (see Tick Source from Chart.js documentation).
ticks: {
source: 'labels'
}
Further you have to change the definition of xAxis.gridLines. Make them displayed again and define lineWidth instead. This should be an array of numbers that specify the stroke width of individual grid lines. Basically all 0 except 1 for the last number.
gridLines: {
lineWidth: labels.map((l, i) => i < labels.length - 1 ? 0 : 1)
}
Please have a look at the runnable code snippet below.
const data = [
{ x: "1-01", y: 1 },
{ x: "1-07", y: 3 },
{ x: "1-14", y: 2 },
{ x: "1-21", y: 4 },
{ x: "1-28", y: 5 },
{ x: "2-04", y: 1 }
];
const labels = data.map(o => o.x);
new Chart('line-chart', {
type: "scatter",
responsive: true,
maintainAspectRatio: false,
data: {
labels: labels,
datasets: [
{
data: data,
label: "A",
showLine: true,
fill: false,
borderWidth: 4,
pointRadius: 5,
tension: 0,
backgroundColor: "#ffffff",
borderColor: "red"
}
]
},
options: {
legend: {
display: false
},
scales: {
xAxes: [
{
type: 'time',
unit: 'day',
time: {
parser: 'M-D'
},
gridLines: {
lineWidth: labels.map((l, i) => i < labels.length - 1 ? 0 : 1)
},
ticks: {
source: 'labels',
padding: 15
}
}
],
yAxes: [
{
ticks: {
padding: 22,
min: 1,
max: 5,
stepSize: 1
},
position: "left",
gridLines: {
drawTicks: false
}
}
]
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.bundle.min.js"></script>
<canvas id="line-chart" height="90"></canvas>
I am trying to position a label related to the dataset below a point on a bubble graph and to have the value displayed on top of the point.
I have tried returning two different values, but it only allows me to return one.
Because of this I have returned both values within the same string.
Is it possible to return the label and position it below the value of the dataset and to put the value above the point of the dataset?
If it isn't possible would it be possible to somehow get the text to align to the center after the line break I have added to the string?
Here is what I have so far
This is what I am trying to achieve, but with the value above the bubble
Here is my code so far:
var ctx = document.getElementById('myChart').getContext('2d');
var myChart = new Chart(ctx, {
type: 'bubble',
data: {
datasets: [
{
label: 'Top',
data: [
{x: 110, y: 0, r: 12, name: "Performance"}
],
backgroundColor: "rgba(255,255,255,1)",
borderColor: "rgba(91,182,209,1)",
borderWidth: 2,
hoverBackgroundColor: "rgba(255,255,255,1)",
hoverBorderWidth : 2
},
{
label: 'Average',
data: [
{x: 75, y: 0, r: 12, name: "Performance"}
],
backgroundColor: "rgba(255,255,255,1)",
borderColor: "rgba(91,182,209,1)",
borderWidth: 2,
hoverBackgroundColor: "rgba(255,255,255,1)",
hoverBorderWidth : 2
},
{
label: 'You 2017',
data: [
{x: 55, y: 0, r: 15, name: "Performance"}
],
backgroundColor: "rgba(255,255,255,1)",
borderColor: "rgba(91,182,209,1)",
borderWidth: 2,
hoverBackgroundColor : "rgba(255,255,255,1)",
hoverBorderWidth : 2
},
{
label: 'You 2018',
data: [
{x: 90, y: 0, r: 15, name: "Performance"} // The labe needs to be
],
backgroundColor: "rgba(255,255,255,1)",
borderColor: "rgba(91,182,209,1)",
borderWidth: 2,
hoverBackgroundColor : "rgba(255,255,255,1)",
hoverBorderWidth : 2
}
]
},
options: {
legend: {
display: false
},
plugins: {
datalabels: {
anchor: function (context) {
var value = context.dataset.data[context.dataIndex];
return value.x < 1000 ? 'end' : 'center';
},
align: function (context) {
var value = context.dataset.data[context.dataIndex];
return value.x < 1000 ? 'end' : 'center';
},
color: function (context) {
var value = context.dataset.data[context.dataIndex];
return value.x < 1000 ? context.dataset.borderColor : 'white';
},
font: {
weight: 'bold'
},
formatter: function (value, context) {
ctx.textAlign = "center";
return context.dataset.label + "\n" + Math.round(value.x);
},
offset: 2,
padding: 0
}
},
maintainAspectRatio: false,
scales: {
yAxes: [{
id: 'first-y-axis',
type: 'linear',
ticks: {
min: 0,
max: 1,
stepSize: 1,
display: false
},
gridLines: {
display: false,
drawBorder: false
}
}],
xAxes: [
{
id: 'first-x-axis',
ticks: {
min: 50, // Controls where axis starts
max: 120, // Controls where axis finishes
stepSize: 70 // Control the gap between the first x-axis value and the last x-axis value
},
gridLines: {
display: false,
lineWidth: 3 // Width of bottom line
}
}
]
}
}
});
Any help or suggestions would be greatly appreciated ^_^
I figured this out by applying 'textAlign' within the charts parameters and set it to centre.
You can see this in the code below:
plugins: {
datalabels: {
anchor: function (context) {
var value = context.dataset.data[context.dataIndex];
return value.x < 1000 ? 'end' : 'center';
},
align: function (context) {
var value = context.dataset.data[context.dataIndex];
return value.x < 1000 ? 'end' : 'center';
},
color: function (context) {
var value = context.dataset.data[context.dataIndex];
return value.x < 1000 ? context.dataset.borderColor : 'white';
},
textAlign: 'center',
font: {
weight: 'bold',
alignment: 'right' // Is this the place to be doing this?
},
formatter: function (value, context) {
return context.dataset.label + '\n' + Math.round(value.x);
},
offset: 2,
padding: 0
}
},
Hope this helps ^^
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>
I am using Chart.js 2.x line chart to create a timeline events chart.
It is working well but I can't figure out how to show a tooltip when the mouse goes over a line. The information I want to show is the same shown in the labels (in the example below 'Label A', 'Label B' or 'Label C'. I tried to add the tooltips options enabled = true and mode = label but it doesn't work.
Here is my JSFiddle
Here is my code:
HTML
<div style="height: 250px;">
<canvas id="timeline"></canvas>
</div>
Javascript
var ctx = $("#timeline").get(0).getContext("2d");
var data = {
labels: ['Red','Blue','Yellow'],
datasets: [
{
label: 'Label A',
backgroundColor: "rgba(208,255,154,1)",
borderColor: "rgba(208,255,154,1)",
fill: false,
borderWidth : 15,
pointRadius : 0,
data: [
{
x: new Date(2014,01,01),
y: 3
}, {
x: new Date(2017,10,01),
y: 3
}
]
},
{
label: 'Label B',
backgroundColor: "rgba(208,255,154,1)",
borderColor: "rgba(208,255,154,1)",
fill: false,
borderWidth : 15,
pointRadius : 0,
data: [
{
x: new Date(2009,01,01),
y: 2
}, {
x: new Date(2012,09,01),
y: 2
}
]
},
{
label: 'Label C',
backgroundColor: "rgba(246,156,85,1)",
borderColor: "rgba(246,156,85,1)",
fill: false,
borderWidth : 15,
pointRadius : 0,
data: [
{
x: new Date(2017,01,01),
y: 1
}, {
x: new Date(2017,08,01),
y: 1
}
]
},
]
};
var options = {
maintainAspectRatio: false,
legend : {
display : true
},
scales: {
xAxes: [{
type: 'time',
unit: 'month',
unitStepSize: 1,
time: {
displayFormats: {
'month': 'MM/YY',
'quarter': 'MM/YY'
}
},
position: 'bottom',
ticks : {
beginAtzero :true
}},
{
type: 'time',
unit: 'month',
unitStepSize: 1,
time: {
displayFormats: {
'month': 'MM/YY',
'quarter': 'MM/YY'
}
},
position: 'top',
ticks : {
beginAtzero :true
}
}],
yAxes : [{
display: false,
scaleLabel : {
display : false
},
ticks : {
beginAtZero :true,
max : 5
}
}]
},
tooltips: {
enabled: true,
mode: 'label',
},
};
var scatterChart = new Chart(ctx, {
type: 'line',
data: data,
options: options
});
I had to add the intersect: false property to the tooltips
Updated JSFiddle
Tooltip code:
tooltips: {
enabled: true,
intersect: false,
titleFontSize: 0,
callbacks: {
label: function(tooltipItems, data) {
return data.datasets[tooltipItems.datasetIndex].label || 'Other';
},
}
}