i am trying to edit it in the labels:{}, but only color is changing but not the text
do let me know if there is a way
plugins: {
legend: {
display: true,
position: 'top',
labels: {
text: "qasim",
color: "red",
}
},
title: {
display: false,
text: "Status",
},
tooltip: {
enabled: false,
position: "nearest",
external: ""
}
}
You will need to use a custom generateLabels function for this:
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'
},
{
label: '# of Points',
data: [7, 11, 5, 8, 3, 7],
borderColor: 'orange'
}
]
},
options: {
plugins: {
legend: {
labels: {
generateLabels: (chart) => {
const datasets = chart.data.datasets;
const {
labels: {
usePointStyle,
pointStyle,
textAlign,
color
}
} = chart.legend.options;
return chart._getSortedDatasetMetas().map((meta) => {
const style = meta.controller.getStyle(usePointStyle ? 0 : undefined);
const borderWidth = Chart.helpers.toPadding(style.borderWidth);
return {
text: 'Custom text: ' + datasets[meta.index].label,
fillStyle: style.backgroundColor,
fontColor: color,
hidden: !meta.visible,
lineCap: style.borderCapStyle,
lineDash: style.borderDash,
lineDashOffset: style.borderDashOffset,
lineJoin: style.borderJoinStyle,
lineWidth: (borderWidth.width + borderWidth.height) / 4,
strokeStyle: style.borderColor,
pointStyle: pointStyle || style.pointStyle,
rotation: style.rotation,
textAlign: textAlign || style.textAlign,
borderRadius: 0, // TODO: v4, default to style.borderRadius
// Below is extra data used for toggling the datasets
datasetIndex: meta.index
};
}, this);
}
}
}
}
}
}
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/3.7.1/chart.js"></script>
</body>
Related
I tried using the stack and offset but it does not seem to work
This is my code:
import React, {
useEffect
} from 'react';
import {
Bar
} from 'react-chartjs-2';
import useWindowWidth from 'wa-shared/src/hooks/useWindowWidth';
const state = {
count: 0,
data: {
labels: [
['Total Users'],
['Users with', 'Active', 'Session'],
['Created 1', 'or More', 'Videos'],
['Shared 1', 'or More', 'Videos']
],
datasets: [{
backgroundColor: '#26863D',
data: [70, 66, 57, 1],
barThickness: '35',
},
{
backgroundColor: '#F2F2F2',
data: [70, 70, 70, 70],
borderRadius: '5',
barThickness: '35',
}
]
}
}
const App = ({}) => {
const width = useWindowWidth();
useEffect(() => {});
return ( <
div className = 'singlebar-chart'
id = "barchart" >
<Bar> data = {
state.data
}
options = {
{
scales: {
x: {
grid: {
display: false,
},
offset: true,
ticks: {
maxRotation: 0,
minRotation: 0,
font: {
size: 8,
}
},
},
y: {
min: 0,
max: 100,
ticks: {
fontColor: '#8A8A8A',
font: {
size: 8,
},
stepSize: 25,
callback: function(value) {
return value + "%"
},
},
scaleLabel: {
display: true,
labelString: "Percentage",
},
grid: {
display: false,
}
}
},
plugins: {
legend: {
display: false,
},
}
}
</Bar>
</div>
)
}
export default App;
.singlebar-chart{
width: 95%;
}
You can use a second x axis and map the other dataset to that axes:
var options = {
type: 'bar',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
backgroundColor: 'pink'
},
{
label: '# of Points',
data: [7, 11, 5, 8, 3, 7],
backgroundColor: 'orange',
xAxisID: 'x2'
}
]
},
options: {
scales: {
x: {},
x2: {
display: false // Dont show the axes since it is just a duplicate
}
}
}
}
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/3.8.0/chart.js"></script>
</body>
Although this gives the exect same result as setting stacked true on the x axis.
i use of chart.js package for create a chart.
my problem:
how change the color of label of each legends?
for example:
color of "legend1" be: red.
color of "legend2" be: blue.
my codes:
const ctx = document.getElementById('myChart').getContext('2d');
const myChart = new Chart(ctx, {
data: {
labels: ['۱۴۰۰/۰۱/۰۱', '۱۴۰۰/۰۱/۰۲', '۱۴۰۰/۰۱/۰۳', '۱۴۰۰/۰۱/۰۴', '۱۴۰۰/۰۱/۰۵', '۱۴۰۰/۰۱/۰۶'],
datasets: [{
type: 'line',
label: 'legend1',
backgroundColor: 'rgb(14, 156, 255)',
data: [6, 5.5, 4, 7, 5.4, 5.8],
fill: false,
borderColor: 'rgb(14, 156, 255)',
tension: 0
},
{
type: 'line',
label: 'legend2',
backgroundColor: 'rgb(22, 185, 156)',
data: [6.2, 5.7, 3.8, 7.2, 5.2, 5.9],
fill: false,
borderColor: 'rgb(22, 185, 156)',
tension: 0
}
] //end : datasets
}, // end: data
options: {
plugins: {
legend: {
labels: {
font: {
size: 18
} // end: font
} // end: labels
,
position: 'bottom',
rtl: true,
align: "start"
} // end: legend
}, // end: plugins
scales: {
y: {
beginAtZero: true,
display: false
} // end: y
,
x: {
grid: {
borderDash: [6, 5],
lineWidth: 1,
color: '#CCCCCC'
} // end: grid
} //end:x
} // end: scales
} //end: options
});
<script src="https://cdn.jsdelivr.net/npm/chart.js#3.7.1/dist/chart.min.js"></script>
<canvas id="myChart" width="778" height="433"></canvas>
my problem is just that: how change the color of each legend's text?
color of "legend1" text and color of "legend2" text.
my codes result:
To achieve what you want you will need to use a custom generateLabels function like so:
const legendColors = ['red', 'blue']
const options = {
type: 'line',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
borderColor: 'pink'
},
{
label: '# of Points',
data: [7, 11, 5, 8, 3, 7],
borderColor: 'orange'
}
]
},
options: {
plugins: {
legend: {
labels: {
generateLabels: (chart) => {
const datasets = chart.data.datasets;
const {
labels: {
usePointStyle,
pointStyle,
textAlign,
color
}
} = chart.legend.options;
return chart._getSortedDatasetMetas().map((meta, i) => {
const style = meta.controller.getStyle(usePointStyle ? 0 : undefined);
const borderWidth = Chart.helpers.toPadding(style.borderWidth);
return {
text: datasets[meta.index].label,
fillStyle: style.backgroundColor,
fontColor: legendColors[i],
hidden: !meta.visible,
lineCap: style.borderCapStyle,
lineDash: style.borderDash,
lineDashOffset: style.borderDashOffset,
lineJoin: style.borderJoinStyle,
lineWidth: (borderWidth.width + borderWidth.height) / 4,
strokeStyle: style.borderColor,
pointStyle: pointStyle || style.pointStyle,
rotation: style.rotation,
textAlign: textAlign || style.textAlign,
borderRadius: 0, // TODO: v4, default to style.borderRadius
// Below is extra data used for toggling the datasets
datasetIndex: meta.index
};
}, this);
}
}
}
}
}
}
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/3.7.1/chart.js"></script>
</body>
Did you try the hex format ?
For example, you could try replacing "rgb(14, 156, 255)" by "#0e9cff"
More info here : https://devsheet.com/code-snippet/change-color-of-the-line-in-chartjs-line-chart/
I can't figure out why my console.log isn't triggered in the Chart.js tooltip itemSort function. Do I miss something ?
plugins: {
legend: {
display: false,
},
tooltip: {
backgroundColor: "transparent",
titleColor: "black",
titleAlign: "center",
bodyColor: "black",
bodyAlign: "center",
displayColors: false,
callbacks: {
label: (element) => element.raw,
},
itemSort: (elements) => {
console.log("elements", elements);
return elements;
},
},
},
This is because by default the interaction mode is 'point' so it only shows a single value and thus can not be sorted. So chart.js does not call the method. If you make it another interaction mode like 'index' where it shows the tooltip for all datapoints at that data index it is getting called:
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: {
plugins: {
tooltip: {
mode: 'index',
itemSort: (e, x) => {
console.log(e.raw, x.raw) // Dont log entire objects since stack does not like that
}
}
}
}
}
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/3.7.0/chart.js"></script>
</body>
Edit:
From your comment on deleted answer if you want to change the order of the label and the value you should use the label callback instead of using the sort function
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: {
plugins: {
tooltip: {
callbacks: {
label: (e) => (`${e.formattedValue}, ${e.label}`)
}
}
}
}
}
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/3.7.0/chart.js"></script>
</body>
I have to create three line charts that share the same x-axis but are vertically stacked on top of each other with different y-axes.
Here is my current visualization.
Unfortunately, the x-axis tick marks do not line up because of the y-axis labels. How should I go about fixing this?
Just stack the axes:
var options = {
type: 'line',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange", "Black"],
datasets: [{
label: 'Dataset 1',
data: [10, 30, 50, 20, 25, 44, -10],
borderColor: 'red',
backgroundColor: 'red'
},
{
label: 'Dataset 2',
data: [10000, 30000, 50000, 20000, 25000, 44000, -10000],
borderColor: 'blue',
backgroundColor: 'blue',
yAxisID: 'y2',
}
]
},
options: {
scales: {
y: {
type: 'linear',
position: 'left',
stack: 'demo',
grid: {
borderColor: 'red'
},
title: {
display: true,
text: 'hello'
}
},
y2: {
offset: true,
position: 'left',
stack: 'demo',
grid: {
borderColor: 'blue'
},
title: {
display: true,
text: 'hello2'
}
}
}
}
}
var ctx = document.getElementById('chartJSContainer').getContext('2d');
new Chart(ctx, options);
<body>
<canvas id="chartJSContainer" width="600" height="400"></canvas>
<script src="https://cdn.jsdelivr.net/npm/chart.js#3.6.0/dist/chart.min.js"></script>
</body>
I'm using "chart.js": "3.0.0" and "react-chartjs-2": "^3.0.3" and I'm trying to chage the x-axes background color.
I could change the color of font but can not change the background
I tried to use
backgroundColor: 'red'
but not working..
const options = {
scales: {
x: {
ticks: {
font: {
size: 10,
},
backgroundColor: 'red', // not working
color: 'black', // worked
},
},
y: {
min: 0,
max: 10,
ticks: {
stepSize: 2,
},
},
},
};
Does anybody know how to change it?
You can use a custom inline plugin for this:
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'
},
{
label: '# of Points',
data: [7, 11, 5, 8, 3, 7],
backgroundColor: 'blue'
}
]
},
options: {
plugins: {
scaleBackgroundColor: {
color: 'yellow'
}
}
},
plugins: [{
id: 'scaleBackgroundColor',
beforeDraw: (chart, args, opts) => {
const {
ctx,
canvas,
chartArea: {
left,
bottom,
width,
}
} = chart;
ctx.beginPath();
ctx.rect(left, bottom, width, (canvas.height - bottom));
ctx.fillStyle = opts.color || 'white'
ctx.fill();
}
}]
}
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>
Edit:
You can also use the backgroundColor option in the axis settings:
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'
},
{
label: '# of Points',
data: [7, 11, 5, 8, 3, 7],
backgroundColor: 'blue'
}
]
},
options: {
scales: {
x: {
backgroundColor: 'yellow'
}
}
},
}
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>