eval and as.symbol question
On 18.10.2001 13:46 Uhr, Gary Collins wrote:
But when I merge these into a dataframe with colnames(df)<-
c("c1","c2","c3","c4","c5"), so that
df
c1 c2 c3 c4 c5 1 1 1 NA NA NA 2 2 2 NA NA NA 3 3 3 NA NA NA 4 NA NA NA 1 1 5 2 2 2 2 2 6 2 2 2 2 2 7 NA 3 3 NA 2 and try the next "logical" step from above....
You might try something like this instead: apply(df, 2, function(x) sum(is.na(x))) Hope this helps Kaspar
Kaspar Pflugshaupt Geobotanisches Institut Zuerichbergstr. 38 CH-8044 Zuerich Tel. ++41 1 632 43 19 Fax ++41 1 632 12 15 mailto:pflugshaupt at geobot.umnw.ethz.ch privat:pflugshaupt at mails.ch http://www.geobot.umnw.ethz.ch -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._