zoo plotting - invalid 'ylim' value

Lines <- "3, NA

library(zoo)
z <- read.zoo(textConnection(Lines), sep = ",", na.strings = " NA")
str(z)

Hi, Gabor:

? ? I just lost perhaps a day's work due to that very problem: ?I couldn't
get read.zoo to work, so I used read.table, which created factors, because
some of my numeric columns included, ", NA", which got translated as a level
" NA" (note this three character code with a space before the NA). ?Then I
did "as.matrix" of the data.frame that I thought was numeric; ?the result
was a zoo object with coredata of class character rather than numeric.

? ? Best Wishes,
? ? Spencer

Gabor Grothendieck wrote:

Just to follow up the thread so that it is not left dangling
the problem was that the object in question had character
rather than numeric data in it.

On Wed, Jun 17, 2009 at 1:58 PM, Gabor
Grothendieck<ggrothendieck at gmail.com> wrote:

What is the result of

dput(stb.foreign)



On Wed, Jun 17, 2009 at 1:53 PM, Khanh Nguyen<knguyen at cs.umb.edu> wrote:

Hi all,

I am very new to 'zoo', so this could probably be a trivia question,
but I got the above error when I plot my zoo object

plot(stb.foreign) #this work fine
? ? ? ?stb.foreign$room.con.lai

?2009-05-28 ?2009-05-29 ?2009-06-01 ?2009-06-02 ?2009-06-03
2009-06-04 ?2009-06-05
11104740 ? ?10772400 ? ?10775110 ? ?10397160 ? ?10037930 ? ? 9986480
?10003780
?2009-06-08 ?2009-06-09 ?2009-06-10 ?2009-06-11 ?2009-06-12
2009-06-15 ?2009-06-16
10163340 ? ?10545920 ? ?11020540 ? ?10720430 ? ?10484040 ? ?10502080
?10932930
?2009-06-17
11201700

plot(stb.foreign$room.con.lai)

Error in plot.window(...) : invalid 'ylim' value
? ? ?Thanks

-k