subject:"\[R\] Counting in Matrix"

Re: [R] Counting in Matrix

2009-12-15 Thread Erik Iverson

?rowSums > -Original Message- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] > On Behalf Of Tom Pitt > Sent: Tuesday, December 15, 2009 2:57 PM > To: r-help@r-project.org > Subject: [R] Counting in Matrix > > > Hi All, > &

[R] Counting in Matrix

2009-12-15 Thread Tom Pitt

Hi All, Is there an easy way to count "TRUEs" for each row? Thanks, Tom x1x2x3x4 1 TRUE TRUE TRUE TRUE 2 FALSE TRUE TRUE TRUE 3 TRUE FALSE TRUE TRUE 4 FALSE FALSE TRUE TRUE 5 TRUE TRUE FALSE TRUE 6 FALSE TRUE FALSE TRUE 7 TRUE FALSE FALSE TRUE 8 FAL