Re: [R] fast NA elimination ?

From: Marc Schwartz <MSchwartz_at_medanalytics.com>
Date: Thu 08 Jul 2004 - 00:41:39 EST

On Wed, 2004-07-07 at 09:35, ivo welch wrote:
> dear R wizards: an operation I execute often is the deletion of all
> observations (in a matrix or data set) that have at least one NA. (I
> now need this operation for kde2d, because its internal quantile call
> complains; could this be considered a buglet?) usually, my data sets
> are small enough for speed not to matter, and there I do not care
> whether my method is pretty inefficient (ok, I admit it: I use the
> sum() function and test whether the result is NA)---but now I have some
> bigger data sets. Is there a recommended method of doing NA elimination
> most efficiently? sincerely, /iaw
> ---
> ivo welch
> professor of finance and economics
> brown / nber / yale

Take a look at ?complete.cases

HTH, Marc Schwartz



R-help@stat.math.ethz.ch mailing list
https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Thu Jul 08 00:45:04 2004

This archive was generated by hypermail 2.1.8 : Wed 03 Nov 2004 - 22:54:45 EST