Merge branches 'undo-expansion' and 'master' of https://github.com/browngraphicslab/Dash-Web into undo-expansion

1 files changed, 4 insertions, 0 deletions

diff --git a/src/client/northstar/operations/HistogramOperation.ts b/src/client/northstar/operations/HistogramOperation.ts
index e63de1632..840520235 100644
--- a/src/client/northstar/operations/HistogramOperation.ts
+++ b/src/client/northstar/operations/HistogramOperation.ts
@@ -42,6 +42,10 @@ export class HistogramOperation extends BaseOperation implements IBaseFilterCons
         this.SchemaName = schemaName;
     }
 
+    Copy(): HistogramOperation {
+        return new HistogramOperation(this.SchemaName, this.X, this.Y, this.V, this.Normalization);
+    }
+
     Equals(other: Object): boolean {
         throw new Error("Method not implemented.");
     }