Show multiple data sets in one panel

I think that Daytum should start supporting working with two or more data
sets with one time, to allow richer displays and features such as
correlations. One feature that would be a good (and simple) start would be
to allow multiple data sets on one panel.

This may only work for specific panels, such as Stacked Line or other
time-related displays.

An example:

I might have one data set, Exercise, that shows how many minutes of
exercise I did in a day. I have another data set, Mood, that shows for each
day whether I'm happy, sad, whatever. Each of these, currently, might
easily be displayed on a stacked line graph. 

I should then be able to create a new stacked line graph that shows both
data sets, which would allow one to easily see by eye whether there is a
connection between exercise and mood.

Original issue reported on code.google.com by sfentr...@gmail.com on 3 Mar 2009 at 1:02

quantazelle / daytum

Show multiple data sets in one panel #108