Using Undo and Redo in OpenRefine

It's not uncommon to make a mistake, or to change your mind about something, when cleaning data. With this is mind, OpenRefine provides a very easy way to undo and redo any and all changes you've made.

In the left hand margin, you should see a tab labelled Undo/Redo. Click on it.

The undo/redo tab is in the left hand margin

Every operation you've run so far will be listed in this tab. To undo changes, all you have to do is click on a previous step. To redo that change, just click on it.

Practice

Try undoing all the transformations you did to the writers_name variable. Select a step before those changes and observe what happens to the variable values.

Now, re-select the most recent change. Your data should go back to how it was.