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I have a chart component called genStarts whose view depends on the visible data of the following chart (singleChart). I'm using the onZoomComplete and onPanComplete options to insert my getVisibleValues function so that genStarts can be updated on zooms and pans. However, I have no way to get the currently visible values when the page first starts up. My getVisibleValues function does not work outside of the chartStyle object, and I haven't found a chart option that executes on startup.
In other words, my genStarts graph is only populated when SingleChart is zoomed or panned but I want it to be populated immediately.
const SingleChart = React.memo(({ setVisible }) => {
function getVisibleValues({ chart }) {
setVisible(chart.scales.x.ticks);
}
const chartStyle = {
options: {
animation: false,
maintainAspectRatio: false,
responsive: true,
plugins: {
zoom: {
zoom: {
wheel: {
enabled: true,
modifierKey: "shift",
},
pinch: {
enabled: true,
},
enabled: true,
drag: true,
mode: "x",
onZoomComplete: getVisibleValues,
},
pan: {
enabled: true,
mode: "x",
speed: 2,
onPanComplete: getVisibleValues,
},
mode: "xy",
},
legend: {
display: false,
},
},
scales: {
y: {
type: "linear",
display: "true",
position: "left",
grid: {
drawBorder: true,
color: "#000000",
},
ticks: {
beginAtZero: true,
color: "#000000",
},
title: {
display: yAxisLabel != "",
text: yAxisLabel,
},
},
x: {
max: 9,
grid: {
drawBorder: true,
color: "#00000",
},
ticks: {
beginAtZero: false,
color: "#000000",
},
},
},
},
};
// ... some code to get chartData
return (
<div>
<Line
data={chartData}
options={chartStyle.options}
width={20}
height={195}
/>
</div>
);
});
export default SingleChart;
You can make use of the animations, they have a property to check if its the first time they have fired, although since you dont want animations you will need to set the main one to a verry low number and at least the tooltip to false and the transition duration of active elements to 0.
const getVisibleValues = ({
chart
}) => {
console.log(chart.scales.x.ticks.map(el => ({
value: el.value,
label: el.label
}))) // Map because stack console prints whole circular context which takes long time
}
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'
}]
},
options: {
animation: {
onComplete: (ani) => {
if (ani.initial) {
getVisibleValues(ani)
}
},
duration: 0.0001
},
transitions: {
active: {
animation: {
duration: 0
}
}
},
plugins: {
tooltip: {
animation: false
}
}
}
}
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/3.5.0/chart.js"></script>
</body>
In my angularJs project,I have a pie Echarts and I define it like below.The problem is that I may have lots of legend and I see I can use type:'scroll' to make it from here, but I failed and it has no impact.
$scope.pieEcharts1 = {
option: {
title: {
text: 'MyPieChart',
left: 'left',
},
tooltip: {
trigger: 'item',
formatter: "{a} <br/>{b} : {c} ({d}%)"
},
legend: {
orient: 'vertical',
left: 'right',
type:'scroll',//does not work
data: []
},
label: {
normal: {
show: true,
formatter: '{d}%'
}
},
labelLine: {
normal: {
show: true
}
},
series: [{
name: 'MyData',
type: 'pie',
radius: '62%',
center: ['50%', '50%'],
data: [],
itemStyle: {
emphasis: {
shadowBlur: 10,
shadowOffsetX: 0,
shadowColor: 'rgba(0, 0, 0, 0.5)'
}
}
}]
}
}
}
//http request to get data
$scope.pieEcharts1.option.legend.data = nameArray
$scope.pieEcharts1.option.series[0] = dataArray
What is the problem in my code?
The scrollable legned is supported from v3.7.0.
https://echarts.apache.org/zh/changelog.html#v3-7-0
I have the following bar chart configuration.
const series = [
{
name: 'Net Profit',
data: [18, 34, 55, 57, 80, 70],
},
];
const options = {
chart: {
type: 'bar',
height: '50px',
toolbar: {
show: false,
},
},
grid: {
show: false,
padding: {
top: 0,
bottom: 0,
},
xaxis: {
lines: {
show: false,
},
},
yaxis: {
lines: {
show: false,
},
},
},
plotOptions: {
bar: {
horizontal: false,
columnWidth: '80%',
barHeight: '100%',
},
},
dataLabels: {
enabled: false,
},
stroke: {
show: false,
width: 0,
colors: ['transparent'],
},
fill: {
opacity: 1,
colors: [
'#000000',
'#B32824',
'#1A73E8',
'#B32824',
'#1A73E8',
'#B32824',
],
type: 'solid',
},
tooltip: {
enabled: false,
},
xaxis: {
axisTicks: {
show: false,
},
axisBorder: {
show: false,
},
labels: {
show: false,
},
},
yaxis: {
axisTicks: {
show: false,
},
axisBorder: {
show: false,
},
labels: {
show: false,
},
},
};
I am getting extra padding at the bottom as below. how can I remove that?
If you don't want to show x-axis and y-axis in your chart, you can simply do
const options = {
chart: {
type: 'bar',
height: '250px',
sparkline: {
enabled: true
}
},
}
The sparkline option will remove all paddings/margins around the chart.
I was facing the same issue, and after reading the doc I found that you should set the value of parentHeightOffset as 0, something like this
var opt1 = {
chart: {
type: 'line',
height: 200,
...
parentHeightOffset: 0,
...
},
...
};
I'm using highcharts-react-official to render a HighchartsReact component. It shows up and works appropriately until I re-render the component. By changing the state at all, the chart will shrink vertically.
I've experimented with setting reflow in the chart options as well as toggling allowChartUpdate and immutable flags on the component itself to no avail.
const ChartView = props => {
const { data } = props;
if(data.highstockData && data.startDate && data.endDate) {
const min = parseInt(moment(data.startDate, 'x').startOf('day').format('x'));
const max = parseInt(moment(data.endDate, 'x').startOf('day').format('x'));
const chartOptions = getChartConfig(data.highstockData, min, max);
return (
<HighchartsReact
highcharts={Highcharts}
options={chartOptions}
/>
)
}
return null;
};
And the parent Component's render return:
return (
<div className="vertical-margin">
{isFetching && !data && <LoadingView/>}
{hasError && !data && <ErrorView/>}
{
data &&
<React.Fragment>
{buttonRow}
<ChartView
data={data}
/>
</React.Fragment>
}
</div>
)
As I said re-rendering for any reason causes the highchart to shrink in height with each re-render. For testing, I call this line:
this.setState({});
I could post the chart config if needed, but it's nothing too fancy.
I haven't been able to find anyone else having this issue and have been pulling my hair out searching for an answer.
It turned out to indeed be a highchart option I was passing into the component. Apparently it was because this option:
scrollbar: {
enabled: true
},
Was not nested under the xAxis section of the options as it should be. It still created a scrollbar correctly but caused this weird, shrinking issue on component render.
chart: {
marginRight: 75,
ignoreHiddenSeries: false,
panning: false,
spacingTop: 10,
height: `${Constants.HIGHCHART_TABLE_HEIGHT}px`,
},
time: {
useUTC: false
},
credits: {
enabled: false
},
exporting: {
enabled: false
},
legend: {
align: 'left',
enabled: true,
itemMarginTop: 5,
itemStyle: {
"color": "#333333",
"cursor": "pointer",
"fontSize": "12px",
"fontWeight": "normal",
"width": "240px"
},
layout: 'vertical',
verticalAlign: 'top',
y: 0
},
navigator: {
enabled: false,
xAxis: {
tickPixelInterval: 100
}
},
plotOptions: {
line: {
marker: {
enabled: true,
fillColor: "#ffffff",
lineColor: null,
lineWidth: 1
}
}
},
rangeSelector: {
enabled: false
},
tooltip: {
formatter: function () {
const sortedPoints = this.points.sort((a, b) => {
return a.point.legendOrder - b.point.legendOrder
});
return [
'<b>',
moment(this.x, 'x').format('MM/DD/YYYY HH:mm'),
'</b><br/>',
sortedPoints.map((item) => {
return [
'<br/><span style="color:'+ item.series.color +';">\u258c</span> ',
'<span>' + item.series.name + '</span>: <b>' + item.y + '</b>',
item.comments ? '<p>(' + item.comments + ')</p>' : ''
].join('');
}).join('')
].join('');
},
shared: true,
crosshairs: {
color: '#ddd',
dashStyle: 'solid'
},
},
xAxis: {
type: 'datetime',
labels:{
formatter: function() {
const parsed = moment(this.value, 'x');
return parsed.format('HH:mm') + '<br/>' + parsed.format('MM/DD');
}
},
min,
max,
reversed: true,
scrollbar: {
enabled: true
},
},
yAxis: [{
alignTicks: false,
max: 60,
min: 0,
opposite: false,
tickInterval: 5,
title: {
text: ''
}
}, {
alignTicks: false,
max: 300,
min: 0,
opposite: true,
tickInterval: 25,
title: {
text: ''
}
}],
//The below properties are watched separately for changes.
series: data,
title: {
text: ''
},
loading: false,
};
Also here's the full options file for reference. It wasn't just that scrollbar option causing it. It was a specific combination of options as I discovered by trying to re-create the problem with a new chart.
I have recently implemented chart display using react-chartjs-2 (https://github.com/jerairrest/react-chartjs-2)
I want to enable zooming and panning feature so that it will be more user-friendly in touch based screens. To implement this features, I installed react-hammerjs and chartjs-plugin-zoom.
import {Chart, Line} from 'react-chartjs-2';
import Hammer from 'react-hammerjs';
import zoom from 'chartjs-plugin-zoom'
And I registered the plugin
componentWillMount(){
Chart.plugins.register(zoom)
}
And the render method goes as follows:
render(){
return <Line data={data} options={options} />
}
Pan and Zoom options:
pan:{
enabled=true,
mode:'x'
},
zoom:{
enabled:true,
drag:true,
mode:'xy'
}
I guess this is the correct method to implement. Unfortunately, the above implementation did not work. I will be really grateful if some of you guys already implemented Zooming and Panning using react-chartjs-2 plugin, please share if how you achieved these functionalities. Or you could point out the problem in my code above.
In order to add Zoom and Pan capabilities to your chart components based on react-chartjs-2, you can follow the steps as shown below:
Step 1: you need to install chartjs-plugin-zoom
$ npm install chartjs-plugin-zoom
Step 2: Import chartjs-plugin-zoom in your chart component
import 'chartjs-plugin-zoom';
Step 3: Enable zoom and pan in the ChartJS component options
zoom: {
enabled: true,
mode: 'x',
},
pan: {
enabled: true,
mode: 'x',
},
That's it. So now your chart component should look like this:
import React from 'react';
import { Line } from 'react-chartjs-2';
import 'chartjs-plugin-zoom';
export default function TimelineChart({ dailyDataSets }) {
const lineChart = dailyDataSets[0] ? (
<Line
data={{
labels: dailyDataSets.map(({ date }) => date),
datasets: [
{
data: dailyDataSets.map((data) => data.attr1),
label: 'First data set',
borderColor: 'red',
fill: true,
},
{
data: dailyDataSets.map((data) => data.attr2),
label: 'Second data set',
borderColor: 'green',
fill: true,
},
],
}}
options={{
title: { display: true, text: 'My Chart' },
zoom: {
enabled: true,
mode: 'x',
},
pan: {
enabled: true,
mode: 'x',
},
}}
/>
) : null;
return <div>{lineChart}</div>;
}
Notes:
You don't have to install hammerjs explicitly, as it will be automatically included by installing chartjs-plugin-zoom as its dependency, see below:
$ npm ls
...
├─┬ chartjs-plugin-zoom#0.7.7
│ └── hammerjs#2.0.8
...
One way to zoom as an example (at least for Mac), you can move your mouse pointer into the chart area, and then scroll your mouse down or up. Once zoomed in, you can keep your mouse clicked while dragging left or right.
There's a syntax error under pan object for enabled attribute.
You've mistakenly put = instead of :
Replace this:
pan:{
enabled=true,
...
},
With:
pan:{
enabled:true,
...
},
And also as #Jun Bin suggested:
Install hammerjs as:
npm install hammerjs --save
And in your component, import it as:
import Hammer from "hammerjs";
you imported the wrong hammer it should be from "hammerjs";
You need to add import 'chartjs-plugin-zoom'; and then add zoom options into options.plugins.zoom, like:
const options = {
plugins: {
zoom: {
pan: {
enabled: true,
mode: 'x',
},
zoom: {
enabled: true,
drag: true,
mode: 'xy'
}
}
}
};
I am trying to do this in a NextJS Project. But to no success so far.
I am using a timeseries plot with date-fns/locale for German and English and keep getting this error:
Cannot convert a Symbol value to a string
TypeError: Cannot convert a Symbol value to a string at TypedRegistry.register (webpack-internal:///./node_modules/chart.js/dist/chart.esm.js:4802:50) at Registry._exec (webpack-internal:///./node_modules/chart.js/dist/chart.esm.js:4927:21) at eval (webpack-internal:///./node_modules/chart.js/dist/chart.esm.js:4919:16) at each (webpack-internal:///./node_modules/chart.js/dist/chunks/helpers.segment.js:233:10) at eval (webpack-internal:///./node_modules/chart.js/dist/chart.esm.js:4917:70) at Array.forEach (<anonymous>) at Registry._each (webpack-internal:///./node_modules/chart.js/dist/chart.esm.js:4912:15) at Registry.add (webpack-internal:///./node_modules/chart.js/dist/chart.esm.js:4870:10) at Function.value [as register] (webpack-internal:///./node_modules/chart.js/dist/chart.esm.js:6192:16) at eval (webpack-internal:///./components/Charts/PortfolioPriceLineDual.jsx:39:45) at Module../components/Charts/PortfolioPriceLineDual.jsx (https://dev.domain.de/_next/static/chunks/components_Charts_PortfolioPriceLineDual_jsx.js:7758:1) at Module.options.factory (https://dev.domain.de/_next/static/chunks/webpack.js?ts=1653499440538:655:31) at __webpack_require__ (https://dev.domain.de/_next/static/chunks/webpack.js?ts=1653499440538:37:33) at Function.fn (https://dev.domain.de/_next/static/chunks/webpack.js?ts=1653499440538:310:21)
My Component:
import { Line } from 'react-chartjs-2'
import 'chartjs-adapter-date-fns'
import { de, enGB, ja } from 'date-fns/locale'
import dynamic from 'next/dynamic'
import 'chart.js/auto'
import { useRouter } from 'next/router'
import { Chart } from 'chart.js'
// import zoomPlugin from 'chartjs-plugin-zoom';
const zoomPlugin = dynamic(() => import('chartjs-plugin-zoom'), {
ssr: false,
})
Chart.register(zoomPlugin);
const PortfolioPriceLineDual = ({
title,
data,
unit,
axesOptions,
showLegend = true,
}) => {
const totalDuration = 5000
const delayBetweenPoints = totalDuration / data.datasets[0].data.length
// const animation =
const { locale } = useRouter()
let format
switch (locale) {
case 'de-DE':
format = de
break
case 'en-US':
format = enGB
break
case 'ja-JP':
format = ja
break
default:
break
}
return (
<Line
data={data}
options={{
responsive: true,
// maintainAspectRatio: true,
// aspectRatio: 16 / 9,
resizeDelay: 5,
animation: {
x: {
type: 'number',
easing: 'linear',
duration: delayBetweenPoints,
from: NaN, // the point is initially skipped
delay: (ctx) => {
if (ctx.type !== 'data' || ctx.xStarted) {
return 0
}
ctx.xStarted = true
return ctx.index * delayBetweenPoints
},
},
y: {
type: 'number',
easing: 'linear',
duration: delayBetweenPoints,
from: (ctx) => {
return ctx.index === 0
? ctx.chart.scales.y.getPixelForValue(100)
: ctx.chart
.getDatasetMeta(ctx.datasetIndex)
.data[ctx.index - 1].getProps(['y'], true).y
},
delay: (ctx) => {
if (ctx.type !== 'data' || ctx.yStarted) {
return 0
}
ctx.yStarted = true
return ctx.index * delayBetweenPoints
},
},
y1: {
type: 'number',
easing: 'linear',
duration: delayBetweenPoints,
from: (ctx) => {
return ctx.index === 0
? ctx.chart.scales.y.getPixelForValue(100)
: ctx.chart
.getDatasetMeta(ctx.datasetIndex)
.data[ctx.index - 1].getProps(['y'], true).y
},
delay: (ctx) => {
if (ctx.type !== 'data' || ctx.yStarted) {
return 0
}
ctx.yStarted = true
return ctx.index * delayBetweenPoints
},
},
},
interaction: {
mode: 'index',
intersect: false,
},
scales: {
x: {
type: 'time',
time: {
unit: 'year',
displayFormats: {
quarter: 'yyyy',
},
tooltipFormat: 'MMMM yyyy',
},
adapters: {
date: {
locale: format,
},
},
ticks: {
align: 'start',
color: '#122a42',
font: {
size: 14,
weight: 'bold',
},
},
grid: {
display: true,
drawBorder: false,
drawOnChartArea: true,
drawTicks: true,
},
},
y: {
type: 'logarithmic',
grid: {
display: true,
drawBorder: false,
drawOnChartArea: true,
drawTicks: true,
},
ticks: {
color: '#122a42',
align: 'end',
font: {
size: 10,
weight: 'normal',
},
// Include a dollar sign in the ticks
// stepSize: 1000,
callback: function (value) {
// callback: function (value, index, ticks) {
return `${new Intl.NumberFormat(locale, axesOptions).format(
value
)}`
},
},
},
y1: {
type: 'linear',
display: true,
position: 'right',
// grid line settings
grid: {
drawOnChartArea: false, // only want the grid lines for one axis to show up
},
ticks: {
color: '#122a42',
align: 'end',
font: {
size: 10,
weight: 'normal',
},
// Include a dollar sign in the ticks
// stepSize: 1000,
callback: function (value) {
// callback: function (value, index, ticks) {
return `${new Intl.NumberFormat(locale, axesOptions).format(
value
)}`
},
},
},
},
zoom: {
enabled: true,
mode: 'x',
},
pan: {
enabled: true,
mode: 'x',
},
plugins: {
zoom: {
enabled: true,
mode: 'x',
},
pan: {
enabled: true,
mode: 'x',
},
// zoom: {
// zoom: {
// wheel: {
// enabled: true,
// },
// pinch: {
// enabled: true,
// },
// mode: 'x',
// },
// },
title: {
display: true,
color: '#151C30',
font: {
size: 26,
weight: 'bold',
style: 'normal',
},
padding: {
bottom: 10,
},
text: `${title}`,
},
tooltip: {
enabled: true,
backgroundColor: '#122a42',
itemSort: function (a, b) {
return b.raw - a.raw
},
callbacks: {
label: function (context) {
let label = context.dataset.label || ''
if (label) {
label += ': '
}
if (context.parsed.y !== null) {
label += `${new Intl.NumberFormat(locale, axesOptions).format(
context.parsed.y
)} ${unit}`
}
return label
},
},
},
legend: {
position: 'bottom',
labels: {
// This more specific font property overrides the global property
color: '#151C30',
font: {
size: 12,
weight: 'light',
},
},
},
},
}}
/>
)
}
export default PortfolioPriceLineDual