Hi,
I'm not sure what your goal is, but why don't you use a list?
You can store each new dataframe name in a new element of the list.
At the end, if each element has the same length, you can use
as.data.frame() or something similar.
Since you didn't provide any sample data, I'm not sure if that's really
what you're looking for, but what I said might get you started.
I'm no expert, but I might be able to help you a bit further if you
provide the necessary information (which you can find in the posting guide)
Ivan
Le 4/7/2010 18:13, Kavitha Venkatesan a écrit :
Hi,
I'd greatly appreciate any insight into the problem in my previous
message below: Please note that I would like to loop through the
following steps for a list of data frames whose names are dynamically
assigned at run time, so I have a character string variable, called
"variable.df", which stores the name of the data frame at any given
point ...and I need to be able to manipulate the contents of the data
frame somehow using this character string :
colnames(variable.df) = colnames(some.other.df)
variable.df = rbind(variable.df, some.other.df)
write.table(variable.df, file=some.file)
Thanks!
Kavitha
On Sat, Mar 20, 2010 at 5:07 PM, Kavitha Venkatesan
<kavitha.venkate...@gmail.com> wrote:
Hi,
I would like to do the following operations:
variable.df is a character string that contains the name of the data
frame that I want to do the following operations on:
variable.df<- data.frame();
# I can do the above command using
assign( variable.df, data.frame() )
How can I perform the assignment statements below ?
colnames(variable.df) = colnames(some.other.df)
variable.df = rbind(variable.df, some.other.df)
write.table(variable.df, file=some.file)
Doing
eval( substitute( colnames(var), list(var=as.name(variable.df) ) ) )
didn't get me all the way there.
Thanks!
Kavitha
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--
Ivan CALANDRA
PhD Student
University of Hamburg
Biozentrum Grindel und Zoologisches Museum
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+49(0)40 42838 6231
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**********
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and provide commented, minimal, self-contained, reproducible code.
