fix(图表-符号地图): 修复符号地图未能根据数据自动缩放的问题

core/core-frontend/src/views/chart/components/js/panel/charts/map/symbolic-map.ts

@@ -140,9 +140,32 @@ export class SymbolicMap extends L7ChartView<Scene, L7Config> {
         }
       })
     })
+    scene.once('loaded', () => {
+      this.autoZoom(symbolicLayer, scene)
+    })
     return new L7Wrapper(scene, configList)
   }
 
+  /**
+   * 根据数据自动缩放大小及位置
+   * @param symbolicLayer
+   * @param scene
+   */
+  autoZoom = (symbolicLayer, scene) => {
+    const roamMap = flag => {
+      return flag ? scene.zoomIn() : scene.zoomOut()
+    }
+    const resetZoom = () => {
+      symbolicLayer.fitBounds()
+    }
+    symbolicLayer && resetZoom()
+    // 自动放大两级
+    let index = 2
+    while (index--) {
+      roamMap(true)
+    }
+  }
+
   /**
    * 构建符号图层
    * @param chart