[R-SIG-Finance] How to add grid to plot.zoo easily

[Gabor Grothendieck]

That's not reproducible:

> require(RODBC)
Loading required package: RODBC
> require(zoo)
> stock1<-getSymbol.RE("SH600036")
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)
grid()

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
properly:

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.
>
>>require(RODBC)
>>require(zoo)
>>stock1<-getSymbol.RE("SH600036")
>>>head(stock1)
>               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
>> plot(stock1$Close)
>> grid()
>>
> _______________________________________________
> R-SIG-Finance at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-sig-finance
> -- Subscriber-posting only.
> -- If you want to post, subscribe first.
>