Index out of range with 'Vega.tabular_data()' and pd.DateTimeIndex

[garaud]

Hi,

Commit 5200e3d seems introduce the error in the method update_component at the line:

parameter = getattr(self, parameter)[index]

when parameter is 'scales for instance, it can be an empty list. This happens when the data passed to the tabular_data has a pandas.DateTimeIndex (see the inner function period_axis).

I'm trying to write a test case for this.

Best regards,
Damien G.

[garaud]

See garaud@c63b48e

Missing the related assert, but it reproduces the problem.

[wrobstory]

Nice bug! The problem is that update_component was trying to index an empty list, because no scale component had been defined yet. Commit c59cf39 should fix- let me know if you're still having problems.