scan(file="", what=numeric(), nmax=0, sep="", skip=0, nlines=0)
file
|
the name of a file to read data values from.
If the specified file is "" ,
then input is taken from the keyboard
(in this case input can be terminated by a blank line).
|
what
|
the type of what gives the type of data to be read.
If what is a list it is assumed that the lines of the data
file are records which each contain length(what) items.
|
nmax
|
the maximum number of data values to be read, or if
what is a list, the maximum number of records to be read.
|
sep
|
by default, scan expects to read white-space delimited
input fields. Alternatively, sep can be used to specify a
character which delimits fields.
|
skip
| this many lines of the input file should be skipped before starting to read data values. |
nlines
| the maximum number of lines of data to be read. |
what
can be a list of types, in which case
scan
returns a list of vectors with the types given by the
types of the elements in what
. This provides a way of reading
columnar data.
Keyboard entry is terminated by typing a blank line.
read.table
for more user-friendly reading of data matrices.
write
.
system("echo 'TITEL extra line' > ex.data") system("echo 2 3 5 7 >> ex.data") system("echo 11 13 17 >> ex.data") scan("ex.data", skip = 1)