[R-SIG-Finance] plotting zoo objects

[Gabor Grothendieck]

Interpreting the problem as  given a 1d zoo object z, plot its
data against 1, 2, 3, ... rather than the times
and then use some custom labelling of the axis:

# test data -- z has 5 values, a break of 2, 5 values, etc.

z <- zoo(c(1:5, 8:12, 15:19), c(1:5, 8:12, 15:19))
plot(coredata(z), xaxt = "n", type = "l")
idx <- seq(1, length(z), 5)
axis(1, idx, time(z)[idx])  # custom label axis with every 5th value

The above does not actually use plot.zoo since we are plotting
the data of zoo rather than a zoo object.  If for some reason you
need to use plot.zoo change it (only the plot statement has changed)
to the following which defines a new zoo object with sequence
numbers as times:

z <- zoo(c(1:5, 8:12, 15:19), c(1:5, 8:12, 15:19))
plot(zoo(coredata(z)), xaxt = "n", type = "l")
idx <- seq(1, length(z), 5)
axis(1, idx, time(z)[idx])


On 8/4/06, Øyvind Foshaug <oyvfos at yahoo.no> wrote:
> Hi all,
>  I would like to plot a zoo object, removing non-trading days, and adjust the tick resolution and the ticklabels. Is that possible?
>  Oyvind
>
>
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