LightningChart® JS BS端结合框架模拟心电图实例

r囧r小猫 2023-07-20 10:50 10阅读 0赞

## 简介 ##

用于 .NET 与 Web 的高性能图表控件

## 官网地址 ##

[英文官网地址：https://www.arction.com/][https_www.arction.com]

## API地址 ##

*  进入到LightningChart® JS 下的Resources的目录  
    ![在这里插入图片描述][20200401105005982.png]
 *  有模板和API等内容  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l3MDB5dw_size_16_color_FFFFFF_t_70]

## 使用方式可以下载对应的模板进行更改，或者自己用脚手架搭建，然后安装即可 ##

*  `cnpm install ––save @arction/lcjs`
 *  `yarn add @arction/lcjs`

## 安装的依赖包说明 ##

*  angular项目中所需要的依赖包不作赘述
 *  `@arction/lcjs` LightningChart使用的依赖包
 *  `@arction/xydata` 是用来模拟心电图数据的生成器工具包
    
     *  地址：[https://www.npmjs.com/package/@arction/xydata][https_www.npmjs.com_package_arction_xydata]
     *  安装方式：`npm install --save @arction/xydata`

## 以angular框架中使用LightningChart® JS为例： ##

*  使用脚手架搭建项目
 *  安装依赖
 *  如果报错查看脚手架、npm版本等，也可以直接下载官网模板进行更改

`**FileName.component.ts**`

import { Component, OnInit } from '@angular/core';
    import {
    	lightningChart,
    	DataPatterns,
    	AxisScrollStrategies,
    	SolidLine,
    	SolidFill,
    	ColorHEX,
    	AutoCursorModes, 
    	FontSettings,
    	LUT,
    	PalettedFill,
    	ColorRGBA
    	} from '@arction/lcjs'
    
    // 数据生成器，用来模拟数据的不间断生成
    import {createSampledDataGenerator} from '@arction/xydata'
    
    @Component({
    	selector: 'app-chart-demo02',
    	templateUrl: './chart-demo02.component.html',
    	styleUrls: ['./chart-demo02.component.css']
    })
    export class ChartDemo02Component implements OnInit {
    	
    	constructor() { }
    
    	ngOnInit() {
    
    		// 创建笛卡尔图表并设置图表标题
    		const chart = lightningChart().ChartXY({})
    
    		// 设置标题及及样式
    		chart.setTitle('心电图测试').setTitleMarginTop(50).setTitleFillStyle(new SolidFill({
    			color: ColorHEX('#00FF00'),
    		})).setTitleFont(new FontSettings({
    			size: 26,
    			style: 'italic'
    		}).setWeight('bold'))
    
    		// 设置面板背景的填充样式
    		const lut = new LUT( {
    			steps: [
    				{ value: 0, color: ColorRGBA( 0, 0, 0 ) },
    				{ value: 30, color: ColorRGBA( 255, 255, 0 ) },
    				{ value: 45, color: ColorRGBA( 255, 204, 0 ) },
    				{ value: 60, color: ColorRGBA( 255, 128, 0 ) },
    				{ value: 100, color: ColorRGBA( 255, 0, 0 ) }
    			],
    			interpolate: false
    		} )
    		chart.setBackgroundFillStyle(new PalettedFill({lut}))
    		
    		// chart.setBackgroundFillStyle(new IndividualPointFill({
    		// 	color: ColorHEX('#fff')
    		// }))
    
    		// 设置图表区域的背景
    		chart.setChartBackgroundFillStyle(new SolidFill({
    			color: ColorHEX('#000')
    		}))
    
    		// 下载图片
    		setTimeout(() => {
    			// chart.saveToFile('lightningChart')
    		}, 12000)
    
    		// 添加行序列以可视化接收的数据
    		const series = chart.addLineSeries({ dataPattern: DataPatterns.horizontalProgressive })
    
    		// 设置序列笔触的样式
    		series.setStrokeStyle(new SolidLine({ 
    			thickness: 1, 
    			fillStyle: new SolidFill({ color: ColorHEX('#CC00FF') })
    		})).setMouseInteractions(true)
    		
    		// 设置光标自动模式 onHover disabled snapToClosest
    		chart.setAutoCursorMode(AutoCursorModes.onHover)
    
    		// 设置视图
    		chart.getDefaultAxisY()
    			.setTitle('振幅（毫伏）')
    			.setInterval(-2000, 1500) // 开始时间，结束时间
    			.setScrollStrategy(AxisScrollStrategies.expansion) // 设置滚动方式， Y轴为扩张式
    			.setTitleFillStyle(new SolidFill({
    				color: ColorHEX('#87CEFF')
    			})) // 设置标题样式
    			.setStrokeStyle(new SolidLine({ // 设置描边样式
    				fillStyle: new SolidFill({ color: ColorHEX('#87CEFF') })
    			}))
    			.setTickStyle((visibleTicks: any) => visibleTicks.setLabelFillStyle(new SolidFill({ 
    				color: ColorHEX('#87CEFF') 
    			}))) // 设置刻度样式
    
    		chart.getDefaultAxisX()
    			.setTitle('毫秒(ms)')
    			.setInterval(0, 6000) // 开始时间，结束时间
    			.setScrollStrategy(AxisScrollStrategies.progressive) // 设置滚动方式 X轴为渐进式
    			.setTitleFont(new FontSettings({ size: 15, style: 'oblique', weight: 'bold' }))
    			.setTitleFillStyle(new SolidFill({
    				color: ColorHEX('#00FF00')
    			})) // 设置标题样式
    			.setStrokeStyle(new SolidLine({ // 设置描边样式
    				fillStyle: new SolidFill({ color: ColorHEX('#00FF00') })
    			}))
    			.setTickStyle((visibleTicks: any) => visibleTicks.setLabelFillStyle(new SolidFill({ 
    				color: ColorHEX('#00FF00') 
    			}))) // 设置刻度样式
    
    			const point = [
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    				{ x: 1508, y: -149 },
    				{ x: 1509, y: -144 },
    				{ x: 1510, y: -137 },
    				{ x: 1511, y: -121 },
    				{ x: 1512, y: -119 },
    				{ x: 1513, y: -132 },
    				{ x: 1514, y: -126 },
    				{ x: 1515, y: -123 },
    				{ x: 1516, y: -104 },
    				{ x: 1517, y: -96 },
    				{ x: 1518, y: -97 },
    				{ x: 1519, y: -82 },
    				{ x: 1520, y: -56 },
    				{ x: 1521, y: -42 },
    				{ x: 1522, y: -47 },
    				{ x: 1523, y: -40 },
    				{ x: 1524, y: -33 },
    				{ x: 1525, y: -37 },
    				{ x: 1526, y: -43 },
    				{ x: 1527, y: -51 },
    				{ x: 1528, y: -51 },
    				{ x: 1529, y: -35 },
    				{ x: 1530, y: -19 },
    				{ x: 1531, y: -12 },
    				{ x: 1532, y: -11 },
    				{ x: 1533, y: -9 },
    				{ x: 1534, y: -2 },
    				{ x: 1535, y: 12 },
    				{ x: 1536, y: 24 },
    				{ x: 1537, y: 24 },
    				{ x: 1538, y: 32 },
    				{ x: 1539, y: 42 },
    				{ x: 1540, y: 39 },
    				{ x: 1541, y: 45 },
    				{ x: 1542, y: 55 },
    				{ x: 1543, y: 43 },
    				{ x: 1544, y: 42 },
    				{ x: 1545, y: 45 },
    				{ x: 1546, y: 46 },
    				{ x: 1547, y: 51 },
    				{ x: 1548, y: 58 },
    				{ x: 1549, y: 61 },
    				{ x: 1550, y: 57 },
    				{ x: 1551, y: 55 },
    				{ x: 1552, y: 46 },
    				{ x: 1553, y: 29 },
    				{ x: 1554, y: 23 },
    				{ x: 1555, y: 24 },
    				{ x: 1556, y: 21 },
    				{ x: 1557, y: 27 },
    				{ x: 1558, y: 45 },
    				{ x: 1559, y: 56 },
    				{ x: 1560, y: 79 },
    				{ x: 1561, y: 102 },
    				{ x: 1562, y: 103 },
    				{ x: 1563, y: 114 },
    				{ x: 1564, y: 129 },
    				{ x: 1565, y: 116 },
    				{ x: 1566, y: 112 },
    				{ x: 1567, y: 127 },
    				{ x: 1568, y: 130 },
    				{ x: 1569, y: 135 },
    				{ x: 1570, y: 143 },
    				{ x: 1571, y: 144 },
    				{ x: 1572, y: 157 },
    				{ x: 1573, y: 153 },
    				{ x: 1574, y: 140 },
    				{ x: 1575, y: 135 },
    				{ x: 1576, y: 129 },
    				{ x: 1577, y: 111 },
    				{ x: 1578, y: 103 },
    				{ x: 1579, y: 106 },
    				{ x: 1580, y: 108 },
    				{ x: 1581, y: 94 },
    				{ x: 1582, y: 96 },
    				{ x: 1583, y: 89 },
    				{ x: 1584, y: 85 },
    				{ x: 1585, y: 89 },
    				{ x: 1586, y: 94 },
    				{ x: 1587, y: 82 }
    	
    			]
    			
    
    			// series.add(point)
    
    			// 创建数据生成器的实例，需要导入包文件
    			createSampledDataGenerator()
    			.setSamplingFrequency(1) // 设置采样频率
    			.setInputData(point)
    			.generate()
    			.setStreamBatchSize(30) // 将流设置为一次输出30个点
    			.setStreamInterval(60) // 将流设置为每60毫秒进行一次
    			.setStreamRepeat(true) // 使流无线循环
    			.toStream() // 使用以前定义的流设置创建新流
    			.forEach((point: any) => {
    				series.add({ x: point.timestamp, y: point.data.y })
    			})
    
    	}
    
    }

## 效果图 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l3MDB5dw_size_16_color_FFFFFF_t_70 1]

[https_www.arction.com]: https://www.arction.com/
[20200401105005982.png]: /images/20230528/12bed2e30f544ad7b0473fb5c93db810.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l3MDB5dw_size_16_color_FFFFFF_t_70]: /images/20230528/52082b685b384ce0bc1a79b0cfbc834a.png
[https_www.npmjs.com_package_arction_xydata]: https://www.npmjs.com/package/@arction/xydata
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l3MDB5dw_size_16_color_FFFFFF_t_70 1]: /images/20230528/94be764da8cd4e25b552df3532474d45.png