Hi
Works for me, how did you tested it?
v <- sample(letters[1:10], 17, replace=T)
d<-data.frame(letters[1:10], 1:10)
d[match(v,d[,1]),2]
[1] 8 2 6 1 7 10 4 10 10 9 10 8 1 8 6 7 8
Regards
Petr
> Předmět
>
> Re: [R] Replacing matching values by related values
>
t.n <- matrix(NA,17,2) # list possible treatments (here 17), and
> link them to numbers
> t.n <- as.data.frame(t.n)
> colnames(t.n) <- c("treatment","numbers")
> t.n$treatment <- t3
> t.n$numbers <- 1:17
>
> # link treatments in d with treatment n
rs")
t.n$treatment <- t3
t.n$numbers <- 1:17
# link treatments in d with treatment numbers in dataset t.n
Here is where I aim to fill d$"t[,1]" and d$"t[,2]" with the corresrponding
numbers from t.n
Thanks.
Kristel
-Oorspronkelijk bericht-
Van: David Winsemius
hem.
--
david.
Thanks!
-Oorspronkelijk bericht-
Van: R. Michael Weylandt [mailto:michael.weyla...@gmail.com
]
Verzonden: zo 18-9-2011 2:27
Aan: Janssen, K.J.M.
CC:
Onderwerp: Re: [R] Replacing matching values by related values
Try playing with match(). Something like
d[match(v,
to:michael.weyla...@gmail.com]
Verzonden: zo 18-9-2011 2:27
Aan: Janssen, K.J.M.
CC:
Onderwerp: Re: [R] Replacing matching values by related values
Try playing with match(). Something like
d[match(v,d[,1]),2]
Should work (untested bc I'm writing from my phone though)
Michael Weylandt
Try playing with match(). Something like
d[match(v,d[,1]),2]
Should work (untested bc I'm writing from my phone though)
Michael Weylandt
On Sep 17, 2011, at 4:33 PM, "Janssen, K.J.M."
wrote:
>
> I am trying to replace values of a vector (consisting of 15 values) by a
> value that is relate
I am trying to replace values of a vector (consisting of 15 values) by a value
that is related to a matching value in a dataset (consisting of 17 rows).
Here's an example
The vector:
v <- c(f,a,e,d,m,o,e,f,i,n,e,i,b,a,o)
The dataset's columns consist of the following values
d[,1] <- c(a,b,c,d,e
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