R help - Sep 2002 - Read.table question

Hi list members,

i've just started using R. i've just experimented with the functions
of R. Now I want to import data from an Excel spreadsheet (saved as
csv) in the following format

Date       AAA    AA     A
1.12002    20.5%  12%    3%
.
.
.

i used the following command: a <- read.scv2("file.csv",
sep=";")
so the import worked fine.
the problem is that everything is stored in the variable a
now i want to extract each series (Date, AAA, AA) and store them into
their own variable. e.g. the values in the AAA column should be stored
into AAA
any ideas on how this shoul be done?
thanks in advance

cheers,

Markus


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>>>>> "Markus" == Markus Haag <markus_haag at
gmx.at> writes:
    > i used the following command: a <- read.scv2("file.csv",
    > sep=";") so the import worked fine.  the problem is that
    > everything is stored in the variable a now i want to
    > extract each series (Date, AAA, AA) and store them into
    > their own variable. e.g. the values in the AAA column
    > should be stored into AAA any ideas on how this shoul be
    > done?  thanks in advance

You can get individual components of you data frame by name.  For
example, a$AAA gives you the AAA column.  AAA <- a$AAA gives you
a separate variable for the AAA column.

A simpler way is to use 'attach'.  If you give the command
attach(a), you will be able to access the columns by name,
without the 'a$' part.

Mike

P.S.  There is a nice introduction to this and more at
http://cran.r-project.org/manuals.html.
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