Fix improperly legend warning hint

src/component/legend/LegendModel.js

@@ -51,7 +51,8 @@ define(function(require) {
 
         _updateData: function (ecModel) {
             var legendData = zrUtil.map(this.get('data') || [], function (dataItem) {
-                if (typeof dataItem === 'string') {
+                // Can be string or number
+                if (typeof dataItem === 'string' || typeof dataItem === 'number') {
                     dataItem = {
                         name: dataItem
                     };

src/component/legend/LegendView.js

@@ -79,10 +79,7 @@ define(function (require) {
                 var seriesModel = ecModel.getSeriesByName(name)[0];
 
                 if (legendDrawedMap[name]) {
-                    if (__DEV__) {
-                        console.warn(name + ' series not exists. Legend data should be same with series name.');
-                    }
-                    // Series not exists
+                    // Have been drawed
                     return;
                 }
 
@@ -125,9 +122,6 @@ define(function (require) {
                             var data = seriesModel.legendDataProvider();
                             var idx = data.indexOfName(name);
                             if (idx < 0) {
-                                if (__DEV__) {
-                                    console.warn(name + ' data item not exists. Legend data should be same with series data name.');
-                                }
                                 return;
                             }
 
@@ -151,6 +145,12 @@ define(function (require) {
                         }
                     }, this);
                 }
+
+                if (__DEV__) {
+                    if (!legendDrawedMap[name]) {
+                        console.warn(name + ' series not exists. Legend data should be same with series name or data name.');
+                    }
+                }
             }, this);
 
             listComponentHelper.layout(group, legendModel, api);