Does the following do what you want?
> raw <- c("A/B", " /B", "A/", "/ ")
> tmp <- sub("^ */", "./", raw)
> cleaned <- sub("/ *$", "/.", tmp)
> cleaned
[1] "A/B" "./B" "A/." "./."
(The " *" is to allow optional spaces before or after the slash.)
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On F
On 12/5/2014 11:24 AM, Kate Ignatius wrote:
I have genetic information for several thousand individuals:
A/T
T/G
C/G etc
For some individuals there are some genotypes that are like this: A/,
C/, T/, G/ or even just / which represents missing and I want to
change these to the following:
A/ A/
Hi,
Briefly, you need to read about regular expressions. It's possible to
be incredibly specific, and even to do what you want with a single
line of code.
It's hard to be certain of exactly what you need, though, without a
reproducible example. See inline for one possibility.
On Fri, Dec 5, 2014
I have genetic information for several thousand individuals:
A/T
T/G
C/G etc
For some individuals there are some genotypes that are like this: A/,
C/, T/, G/ or even just / which represents missing and I want to
change these to the following:
A/ A/.
C/ C/.
G/ G/.
T/ T/.
/ ./.
/A ./A
/C ./C
/G
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