[R] Logical operator fails to recognize vector element

Hi experts, I have encountered a strange phenomenon after loading spreadsheet data via example-read.csv(M:\\...\\mydata.csv,header=T) My data consist of two variables x and y which I have combined to a single vector using z-rowSums(cbind(example$x,example$y)) z [1] 9.79 9.79 17.54 12.59

Re: [R] Logical operator fails to recognize vector element

FAQ 7.31 On Wed, Oct 6, 2010 at 12:02 PM, D. Alain dialva...@yahoo.de wrote: Hi experts, I have encountered a strange phenomenon after loading spreadsheet data via example-read.csv(M:\\...\\mydata.csv,header=T) My data consist of two variables x and y which I have combined to a single

Re: [R] Logical operator fails to recognize vector element

See FAQ 7.31. Duncan Murdoch On 06/10/2010 12:02 PM, D. Alain wrote: Hi experts, I have encountered a strange phenomenon after loading spreadsheet data via example-read.csv(M:\\...\\mydata.csv,header=T) My data consist of two variables x and y which I have combined to a single vector

Re: [R] Logical operator fails to recognize vector element

Here's a simple example that might be instructive: x = 9.790001 y = 9.79 x [1] 9.79 y [1] 9.79 x == y [1] FALSE abs(x - y) 1e-8 [1] TRUE all.equal(x,y) [1] TRUE And as others have said, FAQ 7.31 . - Phil Spector