[R] How to iterate dataframe within a hash

[stephen sefick]

I don't know if this is what you want, but it seems that you just want
to print a subset of your columns:

testlib$tags[,c("tag", "count.raw", "count.adj")]

if you want to do something other than just "print" the columns then
look at the apply family of functions.


On Tue, Dec 16, 2008 at 9:02 PM, Gundala Viswanath <gundalav at gmail.com> wrote:
> Dear all,
>
> I have the following data structure
>
>> print(testlib)
> $tags
>             tag            count.raw  count.adj  err
> 1     aaaaaaaaaa        94         93             0.5
> 2     aaaaaaaaac         1           2               0.2
> 3     aaaaaaaaag         3           2               0.1
> 4     aaaaaaaaca         1           1               0.003
>
>
> I want to iterate the data above and print only
> "tag", "count.raw" and "count.adj" column.
>
> Why my script below failed to do the task?
>
>
> for (i in 1:nrow(testlib)) {
>   cat(testlib$tags[["count.tag"]],",", testlib$tags[["count.raw"]],
> ",", testlib$tags[["count.adj"]],"\n")
> }
>
>
>
> - Gundala Viswanath
> Jakarta - Indonesia
>
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>



-- 
Stephen Sefick

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