Fixed bug in category column copying. This will cause performance issues so a better fix is needed

lwhite1 · lwhite1 · commit c40b80f35e42 · 2016-08-30T16:55:30.000-04:00
diff --git a/src/main/java/com/github/lwhite1/tablesaw/api/CategoryColumn.java b/src/main/java/com/github/lwhite1/tablesaw/api/CategoryColumn.java
@@ -260,8 +260,9 @@ public void add(String stringValue) {
    * Initializes this Column with the given values for performance
    */
   public void initializeWith(IntArrayList list, DictionaryMap map) {
-    values = list;
-    lookupTable = map;
+    for (int key : list) {
+      add(map.get(key));
+    }
   }
 
   /**
