Dear Jeff and R experts,
I wonder whether you have received the previous email on this matter.
I have narrow the problem to plot.xts missing.
require(quantmod)
Loading required package: quantmod
Loading required package: xts
Loading required package: zoo
Attaching package: 'zoo'
The following object(s) are masked from package:base :
as.Date.numeric
Loading required package: Defaults
quantmod: Quantitative Financial Modelling Framework
Version 0.3-6, Revision 433
http://www.quantmod.com
getSymbols('AAPL')
[1] "AAPL"
barChart(AAPL)
#successful. But NO date label for x axis labels.
a<-Cl(AAPL)
class(a)
[1] "xts" "zoo"
plot.zoo(a)
#successful. There are annual label for x axis major ticks.
chartSeries(a)
Error in sum(poss.new) : invalid 'type' (list) of argument
plot(a)
#no date label for x axis ticks
plot(as.xts(a))
#same graph as the above. still no date label for x axis ticks
plot.xts(a)
Error: could not find function "plot.xts"
?plot.xts
#the help window for plot.xts poped up.
library(help=xts)
#window poped up with the following content:
Version: 0.0-15
Revision: 139
Date: 2007-06-04
Author: Jeffrey A. Ryan, Josh M. Ulrich
Depends: zoo
...
License: GPL-3
URL: http://r-forge.r-project.org/projects/xts/
Packaged: Mon Jun 9 23:47:46 2008; jryan
Built: R 2.7.2; i386-pc-mingw32; 2008-10-15 23:19:56; windows
Index:
...
plot.xts Plotting xts Objects
...
It seems that plot.zoo does its job but plot.xts may have some problem.
Besides, the OS is Vista Oem on a notebook. R is 2.7.2 or 2.8.0.
I wonder whether it is enough for R experts to diagnose the problem.
Thanks.
Wind