On May 6, 2010, at 12:10 PM, Muhammad Rahiz wrote:
Hi all,
I have a file, say, test.txt, which contains the following
information. I'm trying to read in the file and specifying the
missing values as NA so that each column has the same number of rows.
I've tried all sorts of manipulation but to no avail.
r1 r2 r3
1 3
2 3
3 2 3
4 2 3
5 2 3
6 2 3
7 2
8 2
9 2 3
If you rplace the "," between the header labels with "\t" then
read.fwf will do it:
> read.fwf(textConnection("r1\tr2\tr3
+ 1 3
+ 2 3
+ 3 2 3
+ 4 2 3
+ 5 2 3
+ 6 2 3
+ 7 2
+ 8 2
+ 9 2 3"), header=TRUE, widths=c(1,-1,1,-1,1) )
r1 r2 r3
1 1 NA 3
2 2 NA 3
3 3 2 3
4 4 2 3
5 5 2 3
6 6 2 3
7 7 2 NA
8 8 2 NA
9 9 2 3
The output should be
r1 r2 r3
1 NA 3
2 NA 3
3 2 3
4 2 3
5 2 3
6 2 3
7 2 NA
8 2 NA
9 2 3
Muhammad
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West Hartford, CT
______________________________________________
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and provide commented, minimal, self-contained, reproducible code.
