This came up a couple of times this week, and Aidan and I just figured out how to do it, so for those that don't already know:
You can scale data in plotted in dataviewer by going to menu: Data->Transformations->Geometric transforms...
Transformations are cumulative. In other words, if I select "Scale = 10.0" and hit "Accept" twice, the data is scaled by 100.
Transformations are cumulative. In other words, if I select "Scale = 10.0" and hit "Accept" twice, the data is scaled by 100.