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 ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
