You can already do so. Edit the lens and use the "add lens content" icon () . You'll get a dropdown you can use to add fields for existing properties, but you can also click "use advanced expression" and, in the resulting textfield, fill in a new attribute (including the leading period). When you go back to the display view that field will be editable and you can assign values to it. Once you have done so you will be able to create a facet to filter on the values you created.

On 7/26/2010 7:17 PM, lostexpectation wrote:
is it going to be possible to add new categories of an item, sometimes
its not about adding new items but adding new categories/facets to
existing set of items and that would be very useful to allow general
users to do...?


On Mar 1, 8:46 pm, "David R. Karger"<[email protected]>  wrote:
I'm happy to announce a preliminary (alpha) release of Dido, a
WYSIWYG-editable version of Exhibit.  With Dido you can edit the data
you are looking at, as well as the Exhibit visualization, right inside
the page.  Then you can save the page to persist your changes.  All the
functionality---exhibit, data, and editor---is in the document itself,
so you don't even need a web connection to use it.  You can find Dido 
athttp://projects.csail.mit.edu/exhibit/Dido/

As I said, alpha.  You're sure to find plenty of bugs.  But I'd love
your feedback.

-David Karger

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