[R] combining numeric vector and column in a data frame
Adrian Johnson
oriolebaltimore at gmail.com
Wed Jul 11 00:38:29 CEST 2012
Hi:
I am trying to map column names of a matrix to another data frame and
get values in a different column of data frame
I have a matrix m.
> my.numeric vec <- m[1,]
> my.numeric.vec
a b c d e f
2 1 4 9 10 3
## my data frame = df1
> df1
fileName type status
b N alive
a T dead
d N alive
c T dead
f N alive
e T dead
I want to combine as.numeric.vec and df1 and create j with correct
filename and type and numeric value
>j
my.numeric.vec type
a 2 T
b 1 N
c 4 T
d 9 N
e 10 T
f 3 N
How can I combine my.numeric.vec and df1$type
when I try:
df1[df1$fileName %in% names(my.numeric.vec),2]
I get wrong answer.
thanks in advance.
Adrian
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