improvements to edit factor levels

[landroni]

I am now experimenting with edit factor levels in gdf(), and I must admit I'm a bit confused by the interface. First, I see no way to re-order factor levels. Maybe an interface to relevel() would be useful?

Second, the message on the right is long and convoluted. I'm not sure how to proceed, and what it will achieve. If I select a level (as the message suggests), nothing happens. If I double-click (what the message should probably indicate), then I get into the input box on the right. But then: if I put in a new name and enter nothing happens; if I select an existing level, I don't see anything happening either.

And last, I think it should be possible to add new levels (in addition to existing ones). Or is it a bad idea?

[jverzani]

There were some issues with this dialog fixed with 6a457c6..9a8e860 (gWidgets2RGtk2):

• the double click is replaced with single click
• the instructions were cleared up
• the interactivity was improved (I removed the typeahead feature)
• the adding new levels isn't implemented. This can be worked around: change to character, modify value, change to factor.