I think you need to put quotes around the column header name,
something like: NYT["Title"]
example:> my.df <- data.frame(header1=1:3, header2=1:3)
> my.df[header2]
Error in `[.data.frame`(my.df, header2) : object "header2" not
found> my.df["header2"]
header2
1 1
2 2
3 3
Hope that helps a little,
Tony Breyal
On 22 Feb, 04:41, miya <ontiveros_pal... at yahoo.com>
wrote:> Hi everyone,
> I'm trying to plot some data across time. I have a list of articles,
ranks,
> date/times, authors, etc. Someone suggested using zoo and someone suggested
> using ts. I'm pretty new at this and have been trying a simple if()
plot()
> statement, but it doesn't seem to work. I keep getting an error that
Title
> does not exist. Basically its saying that the headers do not exist as
> objects. Can anyone please help.
>
> Below is what I've been trying to do and a sample of the data I am
working
> with.
>
> Thanks in advance.
>
> Time ? ?Date ? ?Rank ? ?Topic ? Title ? Author
> 0 ? ? ? xxxx ? ?1 ? ? ? A ? ? ? J ? ? ? By PAUL
> 0 ? ? ? xxxx ? ?2 ? ? ? B ? ? ? K ? ? ? By PERRI
> 0 ? ? ? xxxx ? ?3 ? ? ? C ? ? ? L ? ? ? By WILL
> 0 ? ? ? xxxx ? ?4 ? ? ? D ? ? ? M ? ? ? By ANA
> 1 ? ? ? xxxx ? ?1 ? ? ? A ? ? ? J ? ? ? By PAUL
> 1 ? ? ? xxxx ? ?2 ? ? ? B ? ? ? L ? ? ? By WILL
> 1 ? ? ? xxxx ? ?3 ? ? ? C ? ? ? M ? ? ? By ANA
> 1 ? ? ? xxxx ? ?4 ? ? ? D ? ? ? K ? ? ? By PERRI
>
> if(NYT[Title]=="For Catholics, a Door to Absolution Is Reopened")
> plot(NYT[Rank])
>
> Error in `[.data.frame`(NYT, Title) : object "Title" not found
> --
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