[R] List of data frames...

Thomas Petzoldt thpe at hhbio.wasser.tu-dresden.de
Thu May 13 21:08:33 CEST 2004


Rheaume.Pascal at hydro.qc.ca wrote:
> Hi, 
> 
> I would like to create a list of data frames that I could access via index
> manipulation. An array pointer of dataframe...
> 
>  for (i in 1:length(InputFilelist))
>  {
>     # create data.frame
>     temp <- read.table (file = InputFilelist[i] , header = T, skip = 4)
>     # append data.frame	
>     InputDataFrame <<- list(InputDataFrame,temp)
>  }

I think, the following example my help you:

InputDataFrame <- NULL
for (i in 1:3)
{
      # create data.frame
      temp <- data.frame(x=1:5, y=rnorm(5))
      # append data.frame	
      InputDataFrame <- c(InputDataFrame, list(temp))
}

# show the result
str(InputDataFrame)


--
Thomas P.




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