Re: [R] Remove missings (quick question)

2012-11-09 Thread Marc Schwartz
On Nov 9, 2012, at 11:23 AM, Bert Gunter wrote: > Marc et. al: > > On Fri, Nov 9, 2012 at 9:05 AM, Marc Schwartz wrote: >> On Nov 9, 2012, at 10:50 AM, Eiko Fried wrote: >> >>> A colleague wrote the following syntax for me: >>> >>> D = read.csv("x.csv") >>> >>> ## Convert -999 to NA >>> fo

Re: [R] Remove missings (quick question)

2012-11-09 Thread Bert Gunter
Marc et. al: On Fri, Nov 9, 2012 at 9:05 AM, Marc Schwartz wrote: > On Nov 9, 2012, at 10:50 AM, Eiko Fried wrote: > >> A colleague wrote the following syntax for me: >> >> D = read.csv("x.csv") >> >> ## Convert -999 to NA >> for (k in 1:dim(D)[2]) { >>I = which(D[,k]==-999) >>if (length

Re: [R] Remove missings (quick question)

2012-11-09 Thread Marc Schwartz
On Nov 9, 2012, at 10:50 AM, Eiko Fried wrote: > A colleague wrote the following syntax for me: > > D = read.csv("x.csv") > > ## Convert -999 to NA > for (k in 1:dim(D)[2]) { >I = which(D[,k]==-999) >if (length(I) > 0) { >D[I,k] = NA >} > } > > The dataset has many missing

[R] Remove missings (quick question)

2012-11-09 Thread Eiko Fried
A colleague wrote the following syntax for me: D = read.csv("x.csv") ## Convert -999 to NA for (k in 1:dim(D)[2]) { I = which(D[,k]==-999) if (length(I) > 0) { D[I,k] = NA } } The dataset has many missing values. I am running several regressions on this dataset, and want to e