Re: [R] Number in interval
Good point, I have added a note and example to the documentation to this effect. -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -Original Message- > From: William Dunlap [mailto:wdun...@tibco.com] > Sent: Monday, July 18, 2011 3:10 PM > To: Greg Snow; jim holtman; Manuel K. > Cc: r-help@r-project.org > Subject: RE: [R] Number in interval > > Note that the precendence of %<=% is not the > same as that of <=, so you can be surprised by its > behavior in slightly more complex expressions: > > > z <- seq(1.2, len=5, by=.7) > > which( 2 %<=% z %<=% 3 ) # same as which(2<=z & z<=3) > [1] 3 > > which( 2 %<=% z %<=% 1.5*2 ) > Error in which(2 %<=% z %<=% 1.5 * 2) : > argument to 'which' is not logical > > > Bill Dunlap > Spotfire, TIBCO Software > wdunlap tibco.com > > > -Original Message- > > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of Greg Snow > > Sent: Monday, July 18, 2011 1:39 PM > > To: jim holtman; Manuel K. > > Cc: r-help@r-project.org > > Subject: Re: [R] Number in interval > > > > A small modification of this would be: > > > > > library(TeachingDemos) > > > -3 %<=% z %<=% 3 > > > > Whether that is prettier or uglier than Jim's answer is in the eye of > the beholder (for longer > > variable names this version could save a few key strokes). > > > > -- > > 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-bounces@r- > > > project.org] On Behalf Of jim holtman > > > Sent: Sunday, July 17, 2011 3:29 PM > > > To: Manuel K. > > > Cc: r-help@r-project.org > > > Subject: Re: [R] Number in interval > > > > > > try this: > > > > > > > z <- c(-1.4,0.5,4.7) > > > > (z >= -3) & (z <= 3) > > > [1] TRUE TRUE FALSE > > > > > > > > > > > > > On Sun, Jul 17, 2011 at 10:54 AM, Manuel K. > wrote: > > > > Hi all, > > > > > > > > I have an interval (e.g [-3,3]) and a numeric vector z (- > > > 1.4,0.5,4.7). How > > > > can I test whether an element in z lies between between -3,3? I > > > particularly > > > > need a TRUE/FALSE response. > > > > > > > > Thanks > > > > Manuel > > > > > > > > -- > > > > View this message in context: > http://r.789695.n4.nabble.com/Number- > > > in-interval-tp3673537p3673537.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. > > > > > > > > > > > > > > > > -- > > > Jim Holtman > > > Data Munger Guru > > > > > > What is the problem that you are trying to solve? > > > > > > __ > > > 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. > > > > __ > > 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. __ 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.
Re: [R] Number in interval
Note that the precendence of %<=% is not the same as that of <=, so you can be surprised by its behavior in slightly more complex expressions: > z <- seq(1.2, len=5, by=.7) > which( 2 %<=% z %<=% 3 ) # same as which(2<=z & z<=3) [1] 3 > which( 2 %<=% z %<=% 1.5*2 ) Error in which(2 %<=% z %<=% 1.5 * 2) : argument to 'which' is not logical Bill Dunlap Spotfire, TIBCO Software wdunlap tibco.com > -Original Message- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On > Behalf Of Greg Snow > Sent: Monday, July 18, 2011 1:39 PM > To: jim holtman; Manuel K. > Cc: r-help@r-project.org > Subject: Re: [R] Number in interval > > A small modification of this would be: > > > library(TeachingDemos) > > -3 %<=% z %<=% 3 > > Whether that is prettier or uglier than Jim's answer is in the eye of the > beholder (for longer > variable names this version could save a few key strokes). > > -- > 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-bounces@r- > > project.org] On Behalf Of jim holtman > > Sent: Sunday, July 17, 2011 3:29 PM > > To: Manuel K. > > Cc: r-help@r-project.org > > Subject: Re: [R] Number in interval > > > > try this: > > > > > z <- c(-1.4,0.5,4.7) > > > (z >= -3) & (z <= 3) > > [1] TRUE TRUE FALSE > > > > > > > > > On Sun, Jul 17, 2011 at 10:54 AM, Manuel K. wrote: > > > Hi all, > > > > > > I have an interval (e.g [-3,3]) and a numeric vector z (- > > 1.4,0.5,4.7). How > > > can I test whether an element in z lies between between -3,3? I > > particularly > > > need a TRUE/FALSE response. > > > > > > Thanks > > > Manuel > > > > > > -- > > > View this message in context: http://r.789695.n4.nabble.com/Number- > > in-interval-tp3673537p3673537.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. > > > > > > > > > > > -- > > Jim Holtman > > Data Munger Guru > > > > What is the problem that you are trying to solve? > > > > __ > > 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. > > __ > 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. __ 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.
Re: [R] Number in interval
A small modification of this would be: > library(TeachingDemos) > -3 %<=% z %<=% 3 Whether that is prettier or uglier than Jim's answer is in the eye of the beholder (for longer variable names this version could save a few key strokes). -- 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-bounces@r- > project.org] On Behalf Of jim holtman > Sent: Sunday, July 17, 2011 3:29 PM > To: Manuel K. > Cc: r-help@r-project.org > Subject: Re: [R] Number in interval > > try this: > > > z <- c(-1.4,0.5,4.7) > > (z >= -3) & (z <= 3) > [1] TRUE TRUE FALSE > > > > > On Sun, Jul 17, 2011 at 10:54 AM, Manuel K. wrote: > > Hi all, > > > > I have an interval (e.g [-3,3]) and a numeric vector z (- > 1.4,0.5,4.7). How > > can I test whether an element in z lies between between -3,3? I > particularly > > need a TRUE/FALSE response. > > > > Thanks > > Manuel > > > > -- > > View this message in context: http://r.789695.n4.nabble.com/Number- > in-interval-tp3673537p3673537.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. > > > > > > -- > Jim Holtman > Data Munger Guru > > What is the problem that you are trying to solve? > > __ > 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. __ 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.
Re: [R] Number in interval
Thank you Jim, Steve and David. I found findIntervals to work best for my problem. Manuel -- View this message in context: http://r.789695.n4.nabble.com/Number-in-interval-tp3673537p3674969.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.
Re: [R] Number in interval
On Jul 17, 2011, at 5:29 PM, jim holtman wrote: try this: z <- c(-1.4,0.5,4.7) (z >= -3) & (z <= 3) [1] TRUE TRUE FALSE Another way: > findInterval(z, c(-3,3)) == 1 [1] TRUE TRUE FALSE > z=c(-50,-1.4,0.5,4.7) And just to prove to myself that it behaves as I expect with values below -3: > findInterval(z, c(-3,3)) == 1 [1] FALSE TRUE TRUE FALSE You may need to check that the method you choose behaves as you expect at the extremes. findInterval behaves the same way as cut() does in its default mode. The maximum value matches but the minimum value does not: > z=c(-50,-1.4,0.5,4.7, 3, -3) > findInterval(z, c(-3,3)) == 1 [1] FALSE TRUE TRUE FALSE FALSE TRUE > cut(seq(-4, 4, by=1), breaks=c(-3,3)) [1] (-3,3] (-3,3] (-3,3] (-3,3] (-3,3] (-3,3] Levels: (-3,3] Jim's method lets you determine if you want inclusivity at both or either end. -- David. On Sun, Jul 17, 2011 at 10:54 AM, Manuel K. wrote: Hi all, I have an interval (e.g [-3,3]) and a numeric vector z (-1.4,0.5,4.7). How can I test whether an element in z lies between between -3,3? I particularly need a TRUE/FALSE response. Thanks Manuel -- View this message in context: http://r.789695.n4.nabble.com/Number-in-interval-tp3673537p3673537.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. -- Jim Holtman Data Munger Guru What is the problem that you are trying to solve? __ 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. David Winsemius, MD West Hartford, CT __ 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.
Re: [R] Number in interval
Also check out the 'cut' and 'findIntervals' functions if you need to check for many intervals at once. On Sunday, July 17, 2011, jim holtman wrote: > try this: > >> z <- c(-1.4,0.5,4.7) >> (z >= -3) & (z <= 3) > [1] TRUE TRUE FALSE >> > > > On Sun, Jul 17, 2011 at 10:54 AM, Manuel K. wrote: >> Hi all, >> >> I have an interval (e.g [-3,3]) and a numeric vector z (-1.4,0.5,4.7). How >> can I test whether an element in z lies between between -3,3? I particularly >> need a TRUE/FALSE response. >> >> Thanks >> Manuel >> >> -- >> View this message in context: >> http://r.789695.n4.nabble.com/Number-in-interval-tp3673537p3673537.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. >> > > > > -- > Jim Holtman > Data Munger Guru > > What is the problem that you are trying to solve? > > __ > 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. > -- Steve Lianoglou Graduate Student: Computational Systems Biology | Memorial Sloan-Kettering Cancer Center | Weill Medical College of Cornell University Contact Info: http://cbio.mskcc.org/~lianos/contact __ 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.
Re: [R] Number in interval
try this: > z <- c(-1.4,0.5,4.7) > (z >= -3) & (z <= 3) [1] TRUE TRUE FALSE > On Sun, Jul 17, 2011 at 10:54 AM, Manuel K. wrote: > Hi all, > > I have an interval (e.g [-3,3]) and a numeric vector z (-1.4,0.5,4.7). How > can I test whether an element in z lies between between -3,3? I particularly > need a TRUE/FALSE response. > > Thanks > Manuel > > -- > View this message in context: > http://r.789695.n4.nabble.com/Number-in-interval-tp3673537p3673537.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. > -- Jim Holtman Data Munger Guru What is the problem that you are trying to solve? __ 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.
[R] Number in interval
Hi all, I have an interval (e.g [-3,3]) and a numeric vector z (-1.4,0.5,4.7). How can I test whether an element in z lies between between -3,3? I particularly need a TRUE/FALSE response. Thanks Manuel -- View this message in context: http://r.789695.n4.nabble.com/Number-in-interval-tp3673537p3673537.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.
