数据集在我的折线图上绘制得很好，但我正在尝试使用chartjs-plugin-annotation在图表上显示垂直线。从这些问题来看&答案：
- 已解决：未显示ChartJS注释
- https://github.com/chartjs/chartjs-plugin-annotation/issues/209
- react-chattjs-2悬停在图表上时的垂直线
- Chart.js--绘制任意垂直线
我以为我有正确的配置，但线条没有出现。
LineChart.js
import 'chartjs-plugin-annotation'
import React, { useContext } from 'react'
import { Card, CardBody } from 'reactstrap'
import { Line } from 'react-chartjs-2'
import flatten from 'lodash/flatten'
import { rgbaColor, exchangeChartColors, capitalize, exchanges } from '../../helpers/utils'
import AppContext from '../../context/Context'
import dayjs from 'dayjs'
function getDepositsAndWithdrawals(activity) {
return ['DEPOSIT', 'WITHDRAWAL'].reduce((acc, type) => {
if (activity) {
if (activity.betfair) {
acc[type].betfair = activity.betfair.filter(s => {
return s.legacyData.marketName === type
}).map(s => {
return {
exchange: 'BETFAIR',
type: type,
amount: s.amount,
date: getFormattedDate(s.itemDate)
}
})
}
if (activity.betdaq) {
acc[type].betdaq = activity.betdaq.filter(s => {
return s.PostingCategory === 3 && s.Description.toUpperCase().includes(`${type}:`)
}).map(s => {
return {
exchange: 'BETDAQ',
type: type,
amount: s.Amount,
date: getFormattedDate(s.PostedAt)
}
})
}
if (activity.smarkets) {
const typeToGet = (type === 'DEPOSIT') ? 'deposit' : 'withdraw'
acc[type].smarkets = activity.smarkets.filter(s => {
return s.source === typeToGet
}).map(s => {
return {
exchange: 'SMARKETS',
type: type,
amount: parseFloat(s.money_change),
date: getFormattedDate(s.timestamp)
}
})
}
}
return acc
}, {
DEPOSIT: {},
WITHDRAWAL: {}
})
}
function getFormattedDate(date) {
const parsed = dayjs(date)
const day = parsed
.date()
.toString()
.padStart(2, '0')
// Unsure why have to add 1 but don't care really
const mnth = (parsed
.month() + 1)
.toString()
.padStart(2, '0')
const yr = parsed
.year()
.toString()
.padStart(2, '0')
const hr = parsed
.hour()
.toString()
.padStart(2, '0')
const min = parsed
.minute()
.toString()
.padStart(2, '0')
return `${day}/${mnth}/${yr} @ ${hr}:${min}`
}
function getXAxis(balances, annotations) {
const balanceDates = balances.map(entry => {
return getFormattedDate(entry.date)
})
const annotationDates = annotations.map(ann => {
return ann.value
})
return [
...balanceDates,
...annotationDates
]
}
const ProfitsLineChart = props => {
const { isDark } = useContext(AppContext)
const depositsAndWithdrawals = getDepositsAndWithdrawals(props.activity)
const annotations = Object.values(depositsAndWithdrawals).reduce((acc, exs) => {
const newEntries = Object.values(exs).map(entries => {
return entries.map(entry => {
return {
type: 'line',
mode: 'vertical',
drawTime: 'afterDatasetDraw',
scaleID: 'x-axis-0',
value: entry.date,
borderColor: isDark
? exchangeChartColors.dark[entry.exchange.toLowerCase()]
: exchangeChartColors.light[entry.exchange.toLowerCase()],
borderWidth: 2,
label: {
content: `${entry.exchange} ~ ${entry.type} ~ ${entry.amount}`,
enabled: true,
position: 'top'
}
}
})
})
return [
...acc,
...flatten(newEntries)
]
}, [])
const config = {
data(canvas) {
let datasets = exchanges.map(exchange => {
return {
exchange,
data: props.balances.reduce((acc, entry) => {
const entryForExchange = entry.balances.find(balance => {
return balance.exchange.toUpperCase() === exchange.toUpperCase()
})
if (entryForExchange) {
acc.push({
date: entry.date,
balance: entryForExchange.balance
})
}
return acc
}, [])
}
})
let labels = getXAxis(props.balances, annotations)
// If not specified time period, only show most recent (30) entries
if (!props.start && !props.end) {
datasets = datasets.map(ds => {
return {
...ds,
data: ds.data.slice(ds.data.length - 50, ds.data.length)
}
})
labels = labels.slice(labels.length - 50, labels.length)
}
return {
labels,
datasets: datasets.map(set => {
return {
label: capitalize(set.exchange),
borderWidth: 2,
fill: false,
data: set.data.map(s => s.balance.toFixed(2)),
borderColor: isDark ? exchangeChartColors.dark[set.exchange.toLowerCase()] : exchangeChartColors.light[set.exchange.toLowerCase()],
backgroundColor: isDark ? exchangeChartColors.dark[set.exchange.toLowerCase()] : exchangeChartColors.light[set.exchange.toLowerCase()]
}
})
}
},
options: {
annotation: {
annotations
},
responsive: true,
title: {
display: true,
text: 'Balances',
fontSize: 20,
fontStyle: 'bold',
lineHeight: 2.5,
fontColor: rgbaColor('#cccccc', 0.7)
},
legend: {
labels: {
fontSize: 16,
fontStyle: 'italic',
fontColor: rgbaColor('#cccccc', 0.7)
},
display: true,
position: 'bottom'
},
tooltips: {
mode: 'index',
displayColors: true
},
hover: {
mode: 'label'
},
scales: {
xAxes: [
{
display: true,
id: 'x-axis-0',
scaleLabel: {
display: true,
labelString: 'Time',
fontSize: 12,
fontColor: rgbaColor('#cccccc', 0.7)
},
ticks: {
callback: () => '',
fontColor: rgbaColor('#cccccc', 0.7),
fontStyle: 600
}
}
],
yAxes: [
{
display: true,
id: 'y-axis-0',
scaleLabel: {
display: true,
labelString: 'Balance (£)',
fontSize: 14,
fontColor: rgbaColor('#cccccc', 0.7)
},
ticks: {
min: 0,
fontColor: rgbaColor('#cccccc', 0.7),
fontStyle: 600
}
}
]
}
}
}
return !props.balances.length ? (
<Card className="text-center mb-3">
<CardBody className="p-5">
<div className="display-2 text-200">No Data</div>
<p className="lead mt-4 text-800 text-sans-serif font-weight-semi-bold">There are no balances to display.</p>
<hr />
<p>Please edit your time period search (or remove it altogether) to see data</p>
</CardBody>
</Card>
) : (
<Card className="mb-3">
<CardBody className="rounded-soft bg-gradient">
<Line data={config.data} options={config.options} />
</CardBody>
</Card>
)
}
export default ProfitsLineChart
这是图表使用的配置：
{
"options": {
"annotation": {
"annotations": [
{
"type": "line",
"mode": "vertical",
"drawTime": "afterDatasetDraw",
"scaleID": "x-axis-0",
"value": "08/03/2020 @ 14:47",
"borderColor": "rgba(239, 131, 0, 0.8)",
"borderWidth": 2,
"label": {
"content": "BETFAIR ~ DEPOSIT ~ 22",
"enabled": true,
"position": "top"
}
},
{
"type": "line",
"mode": "vertical",
"drawTime": "afterDatasetDraw",
"scaleID": "x-axis-0",
"value": "03/03/2020 @ 23:04",
"borderColor": "rgba(119, 0, 255, 0.8)",
"borderWidth": 2,
"label": {
"content": "BETDAQ ~ DEPOSIT ~ 26.57",
"enabled": true,
"position": "top"
}
},
{
"type": "line",
"mode": "vertical",
"drawTime": "afterDatasetDraw",
"scaleID": "x-axis-0",
"value": "19/03/2020 @ 17:57",
"borderColor": "rgba(68, 254, 59, 0.8)",
"borderWidth": 2,
"label": {
"content": "SMARKETS ~ DEPOSIT ~ 21",
"enabled": true,
"position": "top"
}
},
{
"type": "line",
"mode": "vertical",
"drawTime": "afterDatasetDraw",
"scaleID": "x-axis-0",
"value": "27/03/2020 @ 12:55",
"borderColor": "rgba(239, 131, 0, 0.8)",
"borderWidth": 2,
"label": {
"content": "BETFAIR ~ WITHDRAWAL ~ -10",
"enabled": true,
"position": "top"
}
},
{
"type": "line",
"mode": "vertical",
"drawTime": "afterDatasetDraw",
"scaleID": "x-axis-0",
"value": "27/03/2020 @ 13:02",
"borderColor": "rgba(119, 0, 255, 0.8)",
"borderWidth": 2,
"label": {
"content": "BETDAQ ~ WITHDRAWAL ~ -10",
"enabled": true,
"position": "top"
}
},
{
"type": "line",
"mode": "vertical",
"drawTime": "afterDatasetDraw",
"scaleID": "x-axis-0",
"value": "01/03/2020 @ 09:45",
"borderColor": "rgba(68, 254, 59, 0.8)",
"borderWidth": 2,
"label": {
"content": "SMARKETS ~ WITHDRAWAL ~ -26.57",
"enabled": true,
"position": "top"
}
}
]
}
},
"responsive": true,
"title": {
"display": true,
"text": "Balances",
"fontSize": 20,
"fontStyle": "bold",
"lineHeight": 2.5,
"fontColor": "rgba(204,204,204,0.7)"
},
"legend": {
"labels": {
"fontSize": 16,
"fontStyle": "italic",
"fontColor": "rgba(204,204,204,0.7)"
},
"display": true,
"position": "bottom"
},
"tooltips": {
"mode": "index",
"displayColors": true
},
"hover": {
"mode": "label"
},
"scales": {
"xAxes": [
{
"display": true,
"id": "x-axis-0",
"scaleLabel": {
"display": true,
"labelString": "Time",
"fontSize": 12,
"fontColor": "rgba(204,204,204,0.7)"
},
"ticks": {
"fontColor": "rgba(204,204,204,0.7)",
"fontStyle": 600
}
}
],
"yAxes": [
{
"display": true,
"id": "y-axis-0",
"scaleLabel": {
"display": true,
"labelString": "Balance (£)",
"fontSize": 14,
"fontColor": "rgba(204,204,204,0.7)"
},
"ticks": {
"min": 0,
"fontColor": "rgba(204,204,204,0.7)",
"fontStyle": 600
}
}
]
}
}
我想不出为什么这不起作用。getXAxis确保注释的字符串时间戳也被添加到X轴。我迷失了想法
看看这个：
https://github.com/reactchartjs/react-chartjs-2/issues/201#issuecomment-579630734
这里，对于垂直线而不是水平线，写
mode: 'vertical',