HI,
Try this:
Variable_1<-"MyDataFrame"
set.seed(1)
assign(Variable_1,sample(1:5,replace=TRUE))
assign(Variable_1,rbind(get(Variable_1),1:5))
get(Variable_1)
# [,1] [,2] [,3] [,4] [,5]
#[1,] 2 2 3 5 2
#[2,] 1 2 3 4 5
A.K.
----- Original Message -----
From: S Ellison <s.elli...@lgcgroup.com>
To: Jessica Streicher <j.streic...@micromata.de>; "Akkara, Antony (GE Energy,
Non-GE)" <antony.akk...@ge.com>
Cc: r-help <r-help@r-project.org>
Sent: Tuesday, August 28, 2012 11:57 AM
Subject: Re: [R] Create and Assign value into a variable from Another variable
> > Now, " MyDataFrame " is a variable and containing some
> values in that.
> > And Now, the problem what is I need to do "rbind" into the
> variable "
> > MyDataFrame ".
> >
> > I tried to do,
> > rbind(as.character(Variable_1),
> > data.frame(read.csv("c:\\My2ndData.csv")))
> >
The above code will try to rbind the character string "MyDataFrame"
(unnecessarily coerced to character because it already is a character string)
with the result of a read.csv (unnecessariliy coerced to a data frame because
read.csv returns a data frame). That seems unlikely to be a useful combination.
I suspect you probably need something _like_
rbind(get(Variable_1), #because one of the things you want to rbind
# is your data frame
with a name in variable_1,
#and you need to
get() the data frame, not its name
read.csv("c:\\My2ndData.csv") ) #because read.csv returns a
data frame already
However, this won't update your data frame called "MyDataFrame", it'll just
print it to the command line.
If you want to store it somewhere, you'll need to either assign it to a
variable normally (eg newframe <- ) or wrap the above in another ugly
assign(Variable_1, ...)
Why you are doing this via 'assign' is hard to understand, though. It's very
convoluted. Lists are almost always better for handling collections of things
that have to have different variable names.
S
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