自定义图标线图echarts graph配置项内容和展示

图标线图，由于用的是版本3的，所以版本4有图片不压缩的属性没有用上，参考用的是4的话可以去看文档，效果会更好。

      var commerce = "/asset/get/s/data-1544515325236-xeknMHyjK.png";

var social_security = "/asset/get/s/data-1544515319190-NtpnXCAf4.png";

var land_tax = "/asset/get/s/data-1544515311252-yaQXbZ_lR.png";

var police = "/asset/get/s/data-1544515299877-vHx3D6am7.png";

var data_clound = "/asset/get/s/data-1544515285844-Z2k1x7F12.png";
	const targetCoord = [1000, 140];
	const curveness = 0.2;
	const linesData = [];
	const categories = [{
		name: '流入中',
		label: {
			normal: {
				fontSize: '14',
				distance:-2,	
			}
		},
	}, {
		name: '暂无流入',
		label: {
			normal: {
				fontSize: '14',
				distance:2,	
			}
		},
	}]

	const item = {
		name: "数据中心",
		value: targetCoord,
		symbolSize: [110, 88],
		symbol: 'image://' + data_clound,
		symbolOffset: ['-20%', '-20%'],
		symbolKeepAspect: true,
		z:22,
		label: {
			normal: {
				fontSize: '16'
			}
		},
	}
	var items = []; //let a = 0;a<graphData.length;a++
	var graphData = [{
		"name": '公安',
		"speed": '',
		"imgUrl": police
	}, {
		"name": '地税',
		"speed": '',
		"imgUrl": land_tax
	}, {
		"name": '工商',
		"speed": '50kb/s',
		"imgUrl": commerce
	}, {
		"name": '社保',
		"speed": '50kb/s',
		"imgUrl": social_security
	}];
	for(let a = graphData.length - 1; a >= 0; a--) {
		let objectGraph = {};
		//得到社保的判断
		var valueMax = (graphData.length - 1 - a) * 100; //valueMax的值影响输入的值
		if(graphData[a].speed == "undefined" || graphData[a].speed == "") {
			objectGraph = {
				name: graphData[a].name,
				category: 1,
				value: [0, valueMax],
				symbolSize: [35,33],
				symbol: 'image://' + graphData[a].imgUrl,
				symbolOffset: ['-90%', '50%'],
				symbolKeepAspect: true,
			}
		} else {
			objectGraph = {
				name: graphData[a].name,
				category: 0,
				active: true,
				speed: '50kb/s',
				value: [0, valueMax],
				symbolSize: [35,33],
				symbol: 'image://' + graphData[a].imgUrl,
				symbolOffset: ['-90%', '50%'],
				symbolKeepAspect: true
			}
		}
		items.push(objectGraph)
	}

	const data = items.concat([item]);
	items.forEach(function(el) {
		if(el.active) {
			linesData.push([{
				coord: el.value
			}, {
				coord: targetCoord
			}])
		}
	})

	const links = items.map((el) => {
		return {
			source: el.name,
			target: item.name,
			speed: el.speed,
			lineStyle: {
				normal: {
					color: el.speed ? '#20b4f4' : '#20b4f4',
					curveness: curveness,
				}
			},
		}
	})

	option = {
	    backgroundColor:"#000",
		legend: [{
			formatter: function(name) {
				return echarts.format.truncateText(name, 100, '14px Microsoft Yahei', '…');
			},
			textStyle: {
				color: '#fff',
				fontSize: 14
			},
			itemGap: 25,
			itemWidth: 10,
			selectedMode: false,
			left: 0,
			data: categories.map(function(el) {
				return {name:el.name,icon:'circle'}
			})
		}],
		grid:{
			top:"16%",
			bottom:"16%",
		},
		color: [
			'#20b4f4',
			'#f9f48e'
		],
		xAxis: {
			show: false,
			type: 'value'
		},
		yAxis: {
			show: false,
			type: 'value'
		},
		series: [{
			type: 'graph',
			layout: 'none',
			coordinateSystem: 'cartesian2d',
			symbolSize: 60,
			z: 1,
			edgeLabel: {
				normal: {
					show: true,
					textStyle: {
						fontSize: 14,
						color:"#fff",//50kb的文字
					},
					formatter: function(params) {
						let txt = ''
						if(params.data.speed !== undefined) {
							txt = params.data.speed
						}
						return txt
					},
				}
			},
			label: {
				normal: {
					show: true,
					position: 'top',
					color: '#fff',
					distance:2
				}
			},
			lineStyle: {
				normal: {
					width: 2,
					curveness:0.3,
					shadowColor: 'none'
				},
			},
			edgeSymbol: ['none', 'none'],
			edgeSymbolSize: 8,
			data: data,
			links: links,
			categories: categories
		}, {
			name: 'A',
			type: 'lines',
			coordinateSystem: 'cartesian2d',
			z: 1,
			effect: {
				show: true,
				smooth: false,
				trailLength: 0,
				symbol: "arrow",
				color: 'rgba(32,180,244,0.8)',
				symbolSize: 12
			},
			lineStyle: {
				normal: {
					curveness: curveness,
					color: 'transparent'
				}
			},
			data: linesData
		}]
	}