Hi Martin Kaffanke <[EMAIL PROTECTED]> napsal dne 06.03.2008 18:05:03:
> > Am Donnerstag, den 06.03.2008, 17:47 +0100 schrieb Petr PIKAL: > > Hi > > > > [EMAIL PROTECTED] napsal dne 06.03.2008 17:41:06: > > > > > Hi there, > > > > > > When i do > > > > > > mean(fl[1:20], na.rm=T) > > > > e.g. > > > > sum(!is.na(fl[1:20])) > > This seems to give me a sum of all the items. > > But I'd like to have it per column. > > > mean(fl[1:20]) > aids angststoer autismus bauchspduekrebs > prostata > -0.7474884 -1.0475500 -0.6267267 NA > -1.7318179 > fraudep manndep hautkrebs herzinfarkt > leukaemie > -1.2919841 -1.5124280 -0.3202036 -0.8246589 > 0.7550549 > lungenkrebs manischdepresiv magenkrebs magersucht > mannmagsucht > -1.2451753 -1.9726160 1.4548394 -0.6242250 > NA > osteoporose panik schizophrenie schlaganfall > zwangsstoer > -1.7974270 NA -1.8634089 NA > -1.5056106 > > > mean(fl[1:20], na.rm=T) > aids angststoer autismus bauchspduekrebs > prostata > -0.7474884 -1.0475500 -0.6267267 1.2168804 > -1.7318179 > fraudep manndep hautkrebs herzinfarkt > leukaemie > -1.2919841 -1.5124280 -0.3202036 -0.8246589 > 0.7550549 > lungenkrebs manischdepresiv magenkrebs magersucht > mannmagsucht > -1.2451753 -1.9726160 1.4548394 -0.6242250 > -0.3765245 > osteoporose panik schizophrenie schlaganfall > zwangsstoer > -1.7974270 -1.2328361 -1.8634089 -1.7165059 > -1.5056106 > > > sum(!is.na(fl[1:20])) > [1] 892 Then why not compute it across columns either by apply or by colSums apply(!is.na(fl), 2, sum) colSums(!is.na(fl)) Regards Petr > > So I'd like to have it like the mean, to see how many data is calculated > by na.rm=T per column? > > Thanks, > Martin > [příloha signature.asc odstraněna uživatelem Petr PIKAL/CTCAP] ______________________________________________ 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.
