Greetings. I've been having lots of luck with my date
> plots. But I've been having a problem getting the
> dateformatter to work. I'm using the code below. The dates
> keep getting formatted with the default, "Sep 28 2006"
> instead of what I want, "Sep 28"
This is an order of opertations problem. The call to "plot_date" sets
the DateFormatter, overriding your choices. You need to set your
custom formatter after the call to plot_date:
ax.plot_date(dates, vals, 'bo')
This is an annoyance that we can fix by setting the date formatter
only if the current formatter is *not* a date formatter instance.