Sorry to bother with what is probably an easy task, but I've been knocking
my head against the wall on this one!
I'm trying to create a simple line-plot of a vector of data, where each row
is associated with a calendar date. What I would like is for the x-axis tick
labels to show the day-of-the week values e.g., Sunday, Monday. Tuesday,
etc...
I can get the weekday values ok, using the weekday() function, but these
values will not work as input to either plot() or xyplot() - looks like the
function expects numeric values.
Using ts.plot() almost works (after creating a cts object) but the labels
are the dates themselves, not the days of the week. I thought about
modifying the ts.plot() function but it looked kinda hairy...
The closest I've come is by doing a plot.factor() with a character="x"
option. This gives a plot of the data points and I guess I could overlay a
line plot on top of this, but I keep thinking that there MUST be an easier
way!
thank in advance,
- Allan
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