[R-SIG-Finance] How to add grid to plot.zoo easily
ggrothendieck at gmail.com
Sun Jan 11 15:20:13 CET 2009
That's not reproducible:
Loading required package: RODBC
Error: could not find function "getSymbol.RE"
however, I suspect you are referring to the fact that
grid in R does not automatically align with Date and
that is independent of zoo. The following misaligned
plot does not use zoo:
plot(Sys.Date() + 1:100, 1:100, pch = 20)
Tested in R version 2.8.1 Patched (2008-12-26 r47350)
Its not clear here whether or not you are really
using zoo but if you are then see the first example
in the answer to zoo FAQ #8 "How are axes
added to a plot created using plot.zoo?" and follow
that code by the following line which does align the grid
abline(v = m, col = grey(0.8), lty = 2)
The zoo FAQ is available via: vignette("zoo-faq")
On Sun, Jan 11, 2009 at 6:17 AM, Wind <windspeedo at qq.com> wrote:
> The grid() could add grids to plot easily. But the vertical grids are not at the positions of major ticks if we plot the time series.
> I am satisfied with the major ticks generated by plot.zoo function. Could we just add grids to plot.zoo according to the major ticks genereated by plot.zoo?
> The following codes work well except that the vertical grids not at the position of major ticks of x axis.
> Open High Low Close Volume
> 2002-04-09 4.288226 4.439191 4.288226 4.349428 101491
> 2002-04-10 4.349428 4.365749 4.239264 4.324947 16651
> 2002-04-11 4.324947 4.357588 4.280066 4.292306 5583
> 2002-04-12 4.284146 4.341268 4.275985 4.312707 5208
> 2002-04-15 4.312707 4.324947 4.222944 4.239264 4541
> 2002-04-16 4.222944 4.239264 4.137261 4.145421 6107
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