Thanks everyone who bothered to reply... I'm in the middle of a working binge and my brain is clearly fried if I wasn't able to figure that one out! Time to take a break...
m. 2009/12/3 Greg Snow <greg.s...@imail.org> > If you only want to count cells that are exactly 0.0 (not slightly > different due to rounding errors) then try: > > > sum( x==0 ) > > If you want a little wiggle room for rounding error, then you can try > something like: > > > sum( -0.0000001 < x & x < 0.0000001 ) > > Adjusting the number of 0's as you see fit. > > Hope this helps, > > -- > Gregory (Greg) L. Snow Ph.D. > Statistical Data Center > Intermountain Healthcare > greg.s...@imail.org > 801.408.8111 > > > > -----Original Message----- > > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > > project.org] On Behalf Of maiya > > Sent: Thursday, December 03, 2009 9:29 AM > > To: r-help@r-project.org > > Subject: [R] count number of empty cells in a table/matrix/data.frame > > > > > > Hi everyone! > > > > This is a ridiculously simple problem, I just can't seem to find the > > solution! > > > > All I need is something equivalent to > > > > sum(is.na(x)) > > > > but instead of counting missing values, to count empty cells (with a > > value > > of 0). > > > > A naive attempt with is.empty didn't work :) > > > > Thanks! > > > > Maja > > > > Oh, and if the proposed solution would be to make all the empty cells > > into > > missing cells, that is not an option! There are over 20,000,000 cells > > in my > > table, and I don't think my computer is in the mood to store two such > > objects! > > -- > > View this message in context: http://n4.nabble.com/count-number-of- > > empty-cells-in-a-table-matrix-data-frame-tp947740p947740.html > > Sent from the R help mailing list archive at Nabble.com. > > > > ______________________________________________ > > 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. > [[alternative HTML version deleted]] ______________________________________________ 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.
