> I am > still getting an error message > >with : > > x <- subset(fish,Year==2012 & Total==max(Total));x > >I get: > >[1] IDWeek Total Fry Smolt FryEq Year > ><0 rows> (or 0-length row.names)
The above is not an error message. It says that there are no rows satisfying your criteria. Note that Total==max(Total) returns a TRUE for each row in which the Total value equals the maximum Total value over all the years in the data. Are you looking for the maximum value of Total in each year? > tmp <- transform(fish, YearlyMaxTotal = ave(Total, Year, FUN=max)) > subset(tmp, Total==YearlyMaxTotal) IDWeek Total Fry Smolt FryEq Year YearlyMaxTotal 21 47 303259 34008 269248 491733 2012 303259 39 39 157260 156909 351 157506 2011 157260 > subset(tmp, Total==YearlyMaxTotal & Year==2012) IDWeek Total Fry Smolt FryEq Year YearlyMaxTotal 21 47 303259 34008 269248 491733 2012 303259 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 Felipe Carrillo > Sent: Sunday, December 02, 2012 10:47 AM > To: arun > Cc: R help > Subject: Re: [R] simple subset question > > Works with the small dataset (2 years) but I get the error message with the > whole > dataset (12 years of data). I am going to have > to check what's wrong with it...Thanks > > Felipe D. Carrillo > Supervisory Fishery Biologist > Department of the Interior > US Fish & Wildlife Service > California, USA > http://www.fws.gov/redbluff/rbdd_jsmp.aspx > > > From: arun <smartpink...@yahoo.com> > >To: Felipe Carrillo <mazatlanmex...@yahoo.com> > >Cc: R help <r-help@r-project.org>; R. Michael Weylandt > <michael.weyla...@gmail.com> > >Sent: Sunday, December 2, 2012 10:29 AM > >Subject: Re: [R] simple subset question > > > >Hi, > >I am getting this: > >x<-subset(fish,Year==2012 & Total==max(Total)) > > x > ># IDWeek Total Fry Smolt FryEq Year > >#21 47 303259 34008 269248 491733 2012 > >A.K. > > > > > > > > > >----- Original Message ----- > >From: Felipe Carrillo <mazatlanmex...@yahoo.com> > >To: R. Michael Weylandt <michael.weyla...@gmail.com> > >Cc: "r-help@r-project.org" <r-help@r-project.org> > >Sent: Sunday, December 2, 2012 1:25 PM > >Subject: Re: [R] simple subset question > > > >Sorry, I was trying it to subset from a bigger dataset called 'winter' and > >forgot to > change the variable names > >when I asked the question. David W suggestion works but the strange part is > >that I am > still getting an error message > >with : > > x <- subset(fish,Year==2012 & Total==max(Total));x > >I get: > >[1] IDWeek Total Fry Smolt FryEq Year > ><0 rows> (or 0-length row.names) > > > >I will start a fresh session to see if that helps...Thank you all > > > >Felipe D. Carrillo > >Supervisory Fishery Biologist > >Department of the Interior > >US Fish & Wildlife Service > >California, USA > >http://www.fws.gov/redbluff/rbdd_jsmp.aspx > > > > > >From: R. Michael Weylandt <michael.weyla...@gmail.com> > >>To: Felipe Carrillo <mazatlanmex...@yahoo.com> > >>Cc: "r-help@r-project.org" <r-help@r-project.org> > >>Sent: Sunday, December 2, 2012 9:42 AM > >>Subject: Re: [R] simple subset question > >> > >>On Sun, Dec 2, 2012 at 5:21 PM, Felipe Carrillo > >><mazatlanmex...@yahoo.com> wrote: > >>> Hi, > >>> Consider the small dataset below, I want to subset by two variables in > >>> one line but it wont work...it works though if I subset separately. I have > >>> to be missing something obvious that I did not realize before while using > >>> subset.. > >>> > >>> fish <- structure(list(IDWeek = c(27L, 28L, 29L, 30L, 31L, 32L, 33L, > >>> 34L, 35L, 36L, 37L, 38L, 39L, 40L, 41L, 42L, 43L, 44L, 45L, 46L, > >>> 47L, 48L, 49L, 50L, 51L, 52L, 27L, 28L, 29L, 30L, 31L, 32L, 33L, > >>> 34L, 35L, 36L, 37L, 38L, 39L, 40L, 41L, 42L, 43L, 44L, 45L, 46L, > >>> 47L, 48L, 49L, 50L, 51L, 52L), Total = c(0L, 0L, 326L, 1735L, > >>> 1807L, 2208L, 3883L, 8820L, 6060L, 19326L, 63158L, 100718L, 53015L, > >>> 91689L, 152629L, 122708L, 61293L, 15574L, 86538L, 75365L, 303259L, > >>> 19691L, 0L, 0L, 0L, 0L, 0L, 0L, 0L, 0L, 161L, 321L, 1000L, 4425L, > >>> 13202L, 19726L, 30518L, 84949L, 157260L, 145691L, 85801L, 62044L, > >>> 44439L, 23272L, 22391L, 20159L, 14854L, 35379L, 31142L, 7736L, > >>> 13221L, 4894L), Fry = c(0L, 0L, 326L, 1735L, 1807L, 2208L, 3883L, > >>> 8759L, 6060L, 19326L, 63119L, 100524L, 52582L, 88170L, 145564L, > >>> 111416L, 38233L, 5248L, 17826L, 11038L, 34008L, 215L, 0L, 0L, > >>> 0L, 0L, 0L, 0L, 0L, 0L, 161L, 321L, 1000L, 4425L, 13055L, 19488L, > >>> 30518L, 84818L, 156909L, 144786L, 84207L, 57720L, 31049L, 6858L, > >>> 1616L, 719L, 364L, 49L, 0L, 0L, 0L, 0L), Smolt = c(0L, 0L, 0L, > >>> 0L, 0L, 0L, 0L, 62L, 0L, 0L, 38L, 195L, 433L, 3518L, 7067L, 11290L, > >>> 23058L, 10327L, 68712L, 64328L, 269248L, 19479L, 0L, 0L, 0L, > >>> 0L, 0L, 0L, 0L, 0L, 0L, 0L, 0L, 0L, 147L, 238L, 0L, 131L, 351L, > >>> 905L, 1592L, 4324L, 13391L, 16414L, 20774L, 19444L, 14491L, 35330L, > >>> 31142L, 7736L, 13221L, 4894L), FryEq = c(0L, 0L, 326L, 1735L, > >>> 1807L, 2208L, 3883L, 8864L, 6060L, 19326L, 63185L, 100854L, 53318L, > >>> 94151L, 157576L, 130610L, 77432L, 22805L, 134639L, 120393L, 491733L, > >>> 33327L, 0L, 0L, 0L, 0L, 0L, 0L, 0L, 0L, 161L, 321L, 1000L, 4425L, > >>> 13306L, 19894L, 30518L, 85042L, 157506L, 146328L, 86914L, 65073L, > >>> 53812L, 34763L, 36931L, 33769L, 24998L, 60110L, 52938L, 13149L, > >>> 22476L, 8319L), Year = c(2012L, 2012L, 2012L, 2012L, 2012L, 2012L, > >>> 2012L, 2012L, 2012L, 2012L, 2012L, 2012L, 2012L, 2012L, 2012L, > >>> 2012L, 2012L, 2012L, 2012L, 2012L, 2012L, 2012L, 2012L, 2012L, > >>> 2012L, 2012L, 2011L, 2011L, 2011L, 2011L, 2011L, 2011L, 2011L, > >>> 2011L, 2011L, 2011L, 2011L, 2011L, 2011L, 2011L, 2011L, 2011L, > >>> 2011L, 2011L, 2011L, 2011L, 2011L, 2011L, 2011L, 2011L, 2011L, > >>> 2011L)), .Names = c("IDWeek", "Total", "Fry", "Smolt", "FryEq", > >>> "Year"), row.names = c(NA, 52L), class = "data.frame") > >>> fish > >>> # Subset to get the max Total for 2012 > >>> x <- subset(winter,Year==2012 & Total==max(Total));b # How come one > >>>line doesn't > work? > >> > >>Works fine for me if I change "winter" to fish here. > >> > >>subset(fish,Year==2012 & Total==max(Total)) > >> IDWeek Total Fry Smolt FryEq Year > >>21 47 303259 34008 269248 491733 2012 > >> > >>> > >>> # It works if I subset the year first and then get the Total max from it > >>> xx <- subset(winter,Year==2012) > >>> xxx <- subset(xx,Total==max(Total));xxx > >>> xxx > >>> > >>> Felipe D. Carrillo > >>> Supervisory Fishery Biologist > >>> Department of the Interior > >>> US Fish & Wildlife Service > >>> California, USA > >>> http://www.fws.gov/redbluff/rbdd_jsmp.aspx > >>> > >>> [[alternative HTML version deleted]] > >>> > >>> > >>> ______________________________________________ > >>> 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. > >>> > >> > >> > >> > > [[alternative HTML version deleted]] > > > > > >______________________________________________ > >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. > > > > > > > > > [[alternative HTML version deleted]] ______________________________________________ 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.
