Read several data.frame sets

Description

Reads a text file in table format and creates a data frame from it. The file may contain several sets, separated by empty lines. The function adds an additional column set to indicate to which set each row belongs.

Usage

1
read.data.sets(file, col.names)

Arguments

file

the name of the file which the data are to be read from. Each row of the table appears as one line of the file. If it does not contain an absolute path, the file name is relative to the current working directory, getwd(). Tilde-expansion is performed where supported.

col.names

a vector of optional names for the variables. The default is to use "V" followed by the column number.

Value

A data frame (data.frame) containing a representation of the data in the file. An extra column set is added to indicate to which set each row belongs.

Warning

A know limitation is that the input file must use newline characters native to the host system, otherwise they will be, possibly silently, misinterpreted. In GNU/Linux the program dos2unix may be used to fix newline characters.

Note

There are several examples of data sets in file.path(system.file(package="eaf"),"extdata").

Author(s)

Manuel López-Ibáñez

See Also

read.table, eafplot, eafdiffplot

Examples

1
2
3
4
A1<-read.data.sets(file.path(system.file(package="eaf"),"extdata","ALG_1_dat"))
str(A1)
A2<-read.data.sets(file.path(system.file(package="eaf"),"extdata","ALG_2_dat"))
str(A2)