Hi, I am trying to understand the behaviour of the plot function. If I have
novdate <- as.Date("2001/11/1") + (0:29)
y <- 1:30
b <- data.frame(novdate,y)then plot(b$novdate,b$y) will produce a plot where the x-ticmarks are given as dates (Nov 04, Nov 09 etc), but plot(b) will produce a plot
where the x-tickmars are integer values (#day since Jan 1st 1970)
In the first case plot is getting a an x-vector of class Date, and y-vector of class integer. In the second case plot gets an object of class data.frame (but with components of class Date and integer).
I am new to R so I may be wrong about this, but it seems to me that different plotting methods are invoked. methods(plot) yields a list of plot methods, but I cannot access most of them.
Is there a way to guide plot(b) to using the method used by plot(b$novdate,b$y), - or is that a bad idea?...
Sincerely, Halld�r
------------------------------------------ Halldor Bjornsson ([EMAIL PROTECTED]) Vedurstofa Islands (Icelandic Met. Office) Bustadavegur 9, IS-150, Reykjavik, Iceland
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