Hello,
I am sorry, but I sincerely don't understand what you are trying to do.
Regards,
Pascal
Le 06/12/2012 11:47, Brian Feeny a écrit :
I would like to take the values of observations and map them to a new index. I
am not sure how to accomplish this. The result would look like so:
x[1,2,3,4,5,6,7,8,9,10]
becomes
y[2,4,6,8,10,12,14,16,18,20]
The "newindex" would not necessarily be this sequence, but a sequence I have
stored in a vector, so it could be all kinds of values. here is what happens:
x <- rnorm(10)
myindex <- seq(from = 1,to = 20, by = 2)
y <- numeric()
y[myindex] <- x
y
[1] -0.03745988 NA -0.09078822 NA 0.92484413 NA
0.32057426 NA
[9] 0.01536279 NA 0.02200198 NA 0.37535438 NA
1.46606535 NA
[17] 1.44855796 NA -0.05048738
So yes, it maps the values to my new indexes, but I have NA's. The result I
want would look like this instead:
[1] -0.03745988
[3] -0.09078822
[5] 0.92484413
[7] 0.32057426
[9] 0.01536279
[11] 0.02200198
[13] 0.37535438
[15] 1.46606535
[17] 1.44855796
[19] -0.05048738
and remove the NA's. I tried this with na.omit() on x, but it looks like so:
x <- rnorm(10)
myindex <- seq(from = 1,to = 20, by = 2)
y <- numeric()
y[myindex] <- na.omit(x)
y
[1] 0.87399523 NA -0.39908184 NA 0.14583051 NA
0.01850755 NA
[9] -0.47413632 NA 0.88410517 NA -1.64939190 NA
0.57650807 NA
[17] 0.44016971 NA -0.56313802
Brian
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