習(xí)題一、選擇題1.如果需要體現(xiàn)3個(gè)變量之間的關(guān)系，且需要強(qiáng)調(diào)第三維的數(shù)據(jù)，就要選擇（D）。A.散點(diǎn)圖 B.柱形圖 C.折線圖 D.氣泡圖2.在ECharts中繪制氣泡圖時(shí)需要將series中的type參數(shù)值設(shè)置為（B）A.pie B.scatter C.bar D.map3.散點(diǎn)圖屬于（C）。A.項(xiàng)目對比可視化圖 B.時(shí)間趨勢可視化圖C.數(shù)據(jù)關(guān)系可視化圖 D.成分比例可視化圖4.在ECharts中symbol表示標(biāo)記的圖形，這些圖形標(biāo)記類型可以是（ABCD）（多選題）A.circle B.roundRect C.triangle D.diamond二、操作題ECharts關(guān)鍵代碼：option={title:{text:'商品市場占有情況統(tǒng)計(jì)',textStyle:{//設(shè)置標(biāo)題文本樣式fontSize:20,},left:'center',},tooltip:{trigger:'axis',},xAxis:{name:'年市場增長率',nameLocation:'center',nameGap:50,nameTextStyle:{fontSize:14},axisTick:{//軸刻度show:false,},axisLine:{//軸線show:false},splitLine:{lineStyle:{type:'dashed'}},scale:true},yAxis:{name:'市場份額',nameRotate:-90,nameLocation:'center',nameGap:50,nameTextStyle:{fontSize:14},axisTick:{//軸刻度show:false,},axisLine:{//軸線show:false},splitLine:{lineStyle:{type:'dashed'}},scale:true},series:[{type:'scatter',//散點(diǎn)圖data:[[0.0458,0.0847,0.89,'薯片'],[0.0265,0.1866,1.51,'玉米餅'],[0.0623,0.122,1.51,'南瓜餅'],[-0.0588,0.2212,3.13,'餅干'],[-0.0287,0.0825,2.48,'蛋糕',],[0.0856,0.2127,0.86,'狀元餅'],[-0.0486,0.1366,1.78,'椰球'],[-0.0294,0.1956,1.09,'威化餅']],symbolSize:function(data){returndata[2]*20;},label:{show:true,formatter:function(param){