Date Filter

[Bluestreak2k5]

So I know I had asked earlier if there was a Date Filter for Control
Types, and their isn't.

However, I have figured out a way to make a filter for years if
someone does need to.

Add in an additional Column which has Years as Numbers, and then in
the chart(s) put

'view': {'columns': [x, y]}

and make sure that the column with 'Year' is not included in any of
the charts views.

Then you can reference this column in the control filter, but it will
never show up in your data.