[R] odd behavior of seq()

2014-07-03 Thread Matthew Keller
Hi all, A bit stumped here. z - seq(.05,.85,by=.1) z==.05 #good [1] TRUE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE z==.15 #huh [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE More generally: sum(z==.25) [1] 1 sum(z==.35) [1] 0 sum(z==.45) [1] 1 sum(z==.55) [1] 1

Re: [R] odd behavior of seq()

2014-07-03 Thread Marc Schwartz
On Jul 3, 2014, at 1:28 PM, Matthew Keller mckellerc...@gmail.com wrote: Hi all, A bit stumped here. z - seq(.05,.85,by=.1) z==.05 #good [1] TRUE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE z==.15 #huh [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE More

Re: [R] odd behavior of seq()

2014-07-03 Thread Jim Holtman
FAQ 7.31 Sent from my Verizon Wireless 4G LTE Smartphone div Original message /divdivFrom: Matthew Keller mckellerc...@gmail.com /divdivDate:07/03/2014 11:28 (GMT-08:00) /divdivTo: r help r-help@r-project.org /divdivSubject: [R] odd behavior of seq() /divdiv /divHi all

Re: [R] odd behavior of seq()

2014-07-03 Thread Peter Langfelder
Precision, precision, precision... z[2]-0.15 [1] 2.775558e-17 My solution: z - signif(seq(.05,.85,by=.1), 5) z[2] - 0.15 [1] 0 z[2]==0.15 [1] TRUE Peter On Thu, Jul 3, 2014 at 11:28 AM, Matthew Keller mckellerc...@gmail.com wrote: Hi all, A bit stumped here. z - seq(.05,.85,by=.1)

Re: [R] odd behavior of seq()

2014-07-03 Thread Matthew Keller
thanks all! On Thu, Jul 3, 2014 at 12:38 PM, Peter Langfelder peter.langfel...@gmail.com wrote: Precision, precision, precision... z[2]-0.15 [1] 2.775558e-17 My solution: z - signif(seq(.05,.85,by=.1), 5) z[2] - 0.15 [1] 0 z[2]==0.15 [1] TRUE Peter On Thu, Jul 3, 2014 at