echarts设置图例颜色和地图底色的方法实例

refresh: function (newOption) {
  if (newOption) {
  this.option = newOption || this.option;
  this.option.legend = this.reformOption(this.option.legend);
  this.legendOption = this.option.legend;
  var data = this.legendOption.data || [];
  var itemName;
  var something;
  var color;
  var queryTarget;
  if (this.legendOption.selected) {
   for (var k in this.legendOption.selected) {
   this._selectedMap[k] = typeof this._selectedMap[k] != 'undefined' ? this._selectedMap[k] : this.legendOption.selected[k];
   }
  }
  for (var i = 0, dataLength = data.length; i < dataLength; i++) {
   itemName = this._getName(data[i]);
   if (itemName === '') {
   continue;
   }
   something = this._getSomethingByName(itemName);
   if (!something.series) {
   this._hasDataMap[itemName] = false;
   } else {
   this._hasDataMap[itemName] = true;
   if (something.data && (something.type === ecConfig.CHART_TYPE_PIE || something.type === ecConfig.CHART_TYPE_FORCE || something.type === ecConfig.CHART_TYPE_FUNNEL)) {
    queryTarget = [
    something.data,
    something.series
    ];
   } else {
    queryTarget = [something.series];
   }//可以看到狼蚁网站SEO优化这一句mend by danielinbiti，图例颜色先查找series是否设置了itemStyle.normal.color这个属性进行判断，如果没有，则会按照默认的颜色设置取值。如果设置了，就按照设置的颜色取值。现在想设置，肯定需要在series中对应的坐标系中设置颜色。
 
color = this.getItemStyleColor(this.deepQuery(queryTarget, 'itemStyle.normal.color'), something.seriesIndex, something.dataIndex, something.data); if (color && something.type != ecConfig.CHART_TYPE_K) { this.setColor(itemName, color); } this._selectedMap[itemName] = this._selectedMap[itemName] != null ? this._selectedMap[itemName] : true; } } } this.clear(); this._buildShape(); },

{
    name: 'iphone3',
    type: 'map',
    mapType: 'china',
    selectedMode:'single',
    roam: true,
    showLegendSymbol:true,
    itemStyle:{
     normal:{
     label:{show:true}
     ,areaStyle:{color:'green'} //设置地图背景色的颜色设置
     ,color:'rgba(255,0,255,0.8)' //刚才说的图例颜色设置
     },
     emphasis:{label:{show:true}}
    },
    data:[
     {name: '北京',value: Math.round(Math.random()1000)},
     {name: '天津',value: Math.round(Math.random()1000)},
     {name: '上海',value: Math.round(Math.random()1000)}     
    ]
    }

color = dataRange && !isNaN(value) ? dataRange.getColor(value) : null;
style.color = style.color || color || this.getItemStyleColor(this.deepQuery(queryTarget, 'itemStyle.normal.color'), data.seriesIndex, -1, data)|| this.deepQuery(queryTarget, 'itemStyle.normal.areaStyle.color');

{
 name: 'iphone3',//add by danielinbiti，注意这里名称必须和坐标系的名称要一致
 type:'', //设置为'',所有图形都不会读取
 itemStyle:{
  normal:{
  color:'rgba(255,0,255,0.8)'
  }
 },
 mapType:'none',
 data:[]
},
{
 name: 'iphone3',
 type: 'map',
 mapType: 'china',
 selectedMode:'single',
 roam: true,
 showLegendSymbol:true,
 itemStyle:{
 normal:{
  label:{show:true}
  ,areaStyle:{color:'green'}
 },
 emphasis:{label:{show:true}}
 },
 data:[
 {name: '北京',value: Math.round(Math.random()1000)},
 {name: '天津',value: Math.round(Math.random()1000)},
 {name: '上海',value: Math.round(Math.random()1000)}
 ]
}