1.排序反了

src/utils/math.js

@@ -73,9 +73,9 @@ export const toHistogram = (array, key, order = 'desc') => {
     }
   }
   switch (order) {
-    case 'asc':
-      return _(res).sortBy(v => v.num).reverse().value();
     case 'desc':
+      return _(res).sortBy(v => v.num).reverse().value();
+    case 'asc':
       return sortBy(res, v => v.num);
     default:
       throw new Error(`unsupported order: ${order}`);