-- David On Dec 2, 2012, at 11:34 AM, Felipe Carrillo wrote:
Using my whole dataset I get: library(plyr) ddply(winter,"Year",summarise,maxTotal=max(Total))fish <- structure(list(Year = 2002:2012, maxTotal = c(1464311L, 1071051L,714837L, 2115018L, 850491L, 207537L, 321195L, 935599L, 194429L, 157260L, 303259L)), .Names = c("Year", "maxTotal"), row.names = c(NA, -11L), class = "data.frame")I only want to extract the max Total for 2012 and want the whole row like this:IDWeek Total Fry Smolt FryEq Year 21 47 303259 34008 269248 491733 2012My whole dataset is too big to post it so thanks for your help and will tryto figure out why subset returns an empty row 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: William Dunlap <wdun...@tibco.com>To: Felipe Carrillo <mazatlanmex...@yahoo.com>; arun <smartpink...@yahoo.com >Cc: R help <r-help@r-project.org> Sent: Sunday, December 2, 2012 11:00 AM Subject: RE: [R] simple subset questionI am still getting an error messagewith : 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 157260subset(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 BehalfOf Felipe Carrillo Sent: Sunday, December 02, 2012 10:47 AM To: arun Cc: R help Subject: Re: [R] simple subset questionWorks with the small dataset (2 years) but I get the error message with the wholedataset (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 questionSorry, I was trying it to subset from a bigger dataset called 'winter' and forgot tochange the variable nameswhen I asked the question. David W suggestion works but the strange part is that I amstill getting an error messagewith : 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 2012x <- subset(winter,Year==2012 & Total==max(Total));b # How come one line doesn'twork?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 itxx <- 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.htmland 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]][[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.
David Winsemius, MD Alameda, CA, USA ______________________________________________ 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.
