Re: [R] Extracting from data.frame

2010-11-14 Thread Bill.Venables
t have become a tad frustrated with it before now. Bill Venables. -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of James Hirschorn Sent: Monday, 15 November 2010 10:32 AM To: R-help@r-project.org Subject: [R] Extracting from dat

Re: [R] Extracting from data.frame

2010-11-14 Thread William Dunlap
Software wdunlap tibco.com > -Original Message- > From: r-help-boun...@r-project.org > [mailto:r-help-boun...@r-project.org] On Behalf Of James Hirschorn > Sent: Sunday, November 14, 2010 4:32 PM > To: R-help@r-project.org > Subject: [R] Extracting from data.frame >

[R] Extracting from data.frame

2010-11-14 Thread James Hirschorn
Can someone please explain the following behavior? df1 and df2 are data.frames. Suppose I want a subset of the rows (observations) using extraction, say just the first row. What I want to know is why if df1 has just one column then df1[1,] returns a vector, whereas if df2 has 2 or more columns