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st: RE: Bar chart and time series
This seems in essentially the same territory
as Margo Schlanger's question yesterday and
so my answer resembles the one given to her.
I am not clear what your "guidelines" are,
but they sound like a boss with inflexible
views. Anyway, I am pretty clear that -graph bar-
was never really intended for time series data.
Given some preternatural predisposition to a
bar chart here, you should go straight for
-twoway bar- here, and forego the categorical
imperative, here so much cant (Kant?).
> Stata 8.2, Windows XP
> I would like to create a bar chart that compares country data over
> time but am not sure how to do this. Take this example:
> . sysuse educ99gdp, clear
> . graph bar public private, over(country)
> The graph shows 1999 data. Now assume that I have 2004 data that I
> want to add to the graph. Assume further that all 2004 values are
> higher than the 1999 values.
> . gen public04 = 1.2*public
> . gen private04 = 1.2*private
> One possibility would be to add the 2004-1999 difference on top of
> the existing bars, in a stacked bar chart. Another possibility would
> be to add points or other symbols above the "public" and "private"
> bars that indicate the 2004 value. I don't know how to do either in
> Stata and so far I managed only to create a graph that has too many
> . graph bar public public04 private private04, over(country)
> I studied the Graphics manual and Michael Mitchell's "A visual guide
> to Stata graphics" but found no other solution. Dot plots are not an
> option because I have to follow certain guidelines. Thank you for
> your suggestions on how the data could be presented.
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