我正在使用react-plotly生成大量的数据时间线(10,000-100,000点),并在另一个窗口中对数据进行动画处理。我需要得到一个带有反应属性表示时间的洗涤器(垂直线),但我需要更新洗涤器而不更新剩余的时间线,因为这样做需要很长时间。我怎样才能让垂直线更新?
编辑:被问到代码
在以下代码中,backtracks
和thresholds
对象为Uint32Array
s并表示跟踪的y轴,其中x轴为Uint32Array
s backtracksTime
和thresholdsTime
。我想要得到的是x坐标currentTime
的垂直线。
import React, { Component } from 'react';
import PropTypes from 'prop-types';
import Plotly from 'plotly.js';
import Plot from 'react-plotly.js';
import styles from './style.scss';
export default class ThresholdWindow extends Component {
static propTypes = {
name: PropTypes.string,
backtracks: PropTypes.object,
backtracksTime: PropTypes.object,
thresholds: PropTypes.object,
thresholdsTime: PropTypes.object,
currentTime: PropTypes.number,
}
constructor(props) {
super(props);
this.state = {
plotRevision: 0,
width: 0,
height: 0,
};
}
componentDidMount() {
const resizeObserver = new ResizeObserver(entries => {
const oldPlotRevision = this.state.plotRevision;
const rect = entries[0].contentRect;
this.setState({
plotRevision: oldPlotRevision + 1,
height: rect.height,
width: rect.width,
});
});
resizeObserver.observe(this.container);
}
shouldComponentUpdate(nextProps, nextState) {
if (this.state.plotRevision !== nextState.plotRevision) {
return true;
} else if (this.props.currentTime !== nextProps.currentTime) {
return true;
}
return false;
}
render() {
const data = [
{
name: 'Threshold',
type: 'scattergl',
mode: 'lines',
x: this.props.thresholdsTime,
y: this.props.thresholds,
side: 'above',
},
{
name: 'Backtracks',
type: 'scattergl',
mode: 'lines',
x: this.props.backtracksTime,
y: this.props.backtracks,
},
{
name: 'Current Time',
type: 'scattergl',
mode: 'lines',
x: [this.props.currentTime, this.props.currentTime],
y: [0, 1],
yaxis: 'y2',
},
];
return (
<div className={styles['threshold-window']} ref={(el) => { this.container = el; }}>
<Plot
divId={`backtracks-${this.props.name}`}
className={styles['threshold-graph']}
ref={(el) => { this.plot = el; }}
layout={{
width: this.state.width,
height: this.state.height,
yaxis: {
fixedrange: true,
},
yaxis2: {
side: 'right',
range: [0, 1],
},
margin: {
l: 35,
r: 15,
b: 20,
t: 15,
},
legend: {
orientation: 'h',
y: 1,
},
}}
revision={this.state.plotRevision}
data={data}
/>
</div>
);
}
}
Edit2:我实际上并没有在任何地方看到currentTime
行,所以我非常确定某处有错误。