Great!! Thank you so much for your suggestions, Patrick and Rich!
That got me workin!
-Santosh
On 1/22/07, Patrick Burns <
pburns@pburns.seanet.com> wrote:You could have found '[[' in the subscripting section
of chapter 1 of S Poetry.
Actually I would prefer:
df[, DataColumn]
as it works with matrices and data frames, and it doesn't
presume to know how data frames are implemented.
Patrick Burns
patrick@burns-stat.com
+44 (0)20 8525 0696
http://www.burns-stat.com
(home of S Poetry and "A Guide for the Unwilling S User")
Santosh wrote:
> Dear SPlus Users,
>
> Is there a way to work with indirect references in SPlus?
>
> For example,
>
> DataColumn <- "Resist"
> MatrixColumn <- "ExpnsnCoeff"'
> ScalarColumn <- "Voltage"
>
> As I don't know the syntax, I would like illustrate using the examples
> given below.
>
> In conventional SPLUS notation, if "df" is a generic dataframe that
> consists of vectors
> "Resist", "ExpnsnCoeff", "Voltage",
>
> "df$Resist", "df$ExpnsnCoeff", "df$Voltage" notation may be used to
> for data handling in respective vectors of the data frame.
>
> Instead of the above notation, I would like to use an indirect
> reference like:
>
> Assuming that the syntax to provide indirect references is curly
> braces, e.g. ${DataColumn},
>
> "df${DataColumn}" indirectly accesses the vector "df$Resist";
> similarly "df${MatrixColumn}" calls "df$ExpnsnCoeff" vector
> indirectly, and so on..
>
>
> Hope the above question is clear; please do feel free to ask if you
> have any additional questions.
>
> Regards,
> Santosh
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