HI Elaine, You only provided an object "datam" and the dput(dta). I don't know what is inside "datam". Your question "how to use the object "datam" in connection with the code ..." is very confusing. Do you want to find if datam is a subset of dta or something else?
Regarding your other question regaring the row.names(NA, -11L), If you change it manually to row.names(NA,11L), may not make any difference. This link might be useful: http://stackoverflow.com/questions/7014387/whats-the-difference-between-1l-and-1 dta1<-structure(list(Species = structure(1:11, .Label = c("Butterfly A1", "Butterfly A2", "Butterfly A3", "Butterfly A4", "Butterfly B1", "Butterfly B2", "Butterfly B3", "Butterfly B4", "Butterfly B5", "Butterfly C1", "Butterfly C2"), class = "factor"), Range = c(130.5, 450.68, 1102.38, 893.34, 820.2, 872.2, 488.2, 620.11, 982.78, 720.32, 912.2), Latitude = c(9.45, 10.2, 9.3, 16.4, 10.54, 10.87, 16.79, 18.3, 12.98, 12.67, 18.07)), .Names = c("Species", "Range", "Latitude"), class = "data.frame", row.names = c(NA, 11L)) identical(dta,dta1) #[1] TRUE Suppose, you change your row.names: dta4<-dta row.names(dta4)<-paste0("A",1:11) dput(dta4) structure(list(Species = structure(1:11, .Label = c("Butterfly A1", "Butterfly A2", "Butterfly A3", "Butterfly A4", "Butterfly B1", "Butterfly B2", "Butterfly B3", "Butterfly B4", "Butterfly B5", "Butterfly C1", "Butterfly C2"), class = "factor"), Range = c(130.5, 450.68, 1102.38, 893.34, 820.2, 872.2, 488.2, 620.11, 982.78, 720.32, 912.2), Latitude = c(9.45, 10.2, 9.3, 16.4, 10.54, 10.87, 16.79, 18.3, 12.98, 12.67, 18.07)), .Names = c("Species", "Range", "Latitude"), class = "data.frame", row.names = c("A1", "A2", "A3", "A4", "A5", "A6", "A7", "A8", "A9", "A10", "A11")) I hope it helps. A.K. ________________________________ From: Elaine Kuo <elaine.kuo...@gmail.com> To: arun <smartpink...@yahoo.com> Sent: Monday, December 17, 2012 8:35 AM Subject: Re: [R] averaging X of specific Y (latitude) Thanks for the immediate response. You are right. It is unclear. Please kindly find the code below written by a R beginner like me. My question is how to use the object "datam" in connection with the code starting with dta <-? For example, is it possible to find the text below inside "datam"? "Butterfly A1","Butterfly A2", "Butterfly A3", "Butterfly A4", "Butterfly B1","Butterfly B2", "Butterfly B3", "Butterfly B4", "Butterfly B5", "Butterfly C1", "Butterfly C2" Thank you again. Elaine code datam <-read.csv('H:/R_data/bfly.csv',header=T, row.names=1) dim(datam) datam[1,] str(datam) dput(datam, "datam") dta <- structure(list(Species = structure(1:11, .Label = c("Butterfly A1","Butterfly A2", "Butterfly A3", "Butterfly A4", "Butterfly B1","Butterfly B2", "Butterfly B3", "Butterfly B4", "Butterfly B5", "Butterfly C1", "Butterfly C2"), class = "factor"), Range = c(130.5, 450.68, 1102.38, 893.34, 820.2, 872.2, 488.2, 620.11, 982.78, 720.32, 912.2), Latitude = c(9.45, 10.2, 9.3, 16.4, 10.54, 10.87, 16.79, 18.3, 12.98, 12.67, 18.07)), .Names = c("Species", "Range", "Latitude"), class = "data.frame", row.names = c(NA, -11L)) Bfly <- aggregate(Range~Species+floor(Latitude), dta, mean) colnames(Bfly) <- c("Species", "Latitude", "Mean") Bfly On Mon, Dec 17, 2012 at 9:23 PM, arun <smartpink...@yahoo.com> wrote: HI, >Your question is not very clear. > >You get the "structure" like code by dput(datam). >A.K. > > > > > > >----- Original Message ----- >From: Elaine Kuo <elaine.kuo...@gmail.com> >To: dcarl...@tamu.edu; r-help@r-project.org > >Cc: >Sent: Monday, December 17, 2012 6:55 AM >Subject: Re: [R] averaging X of specific Y (latitude) > >Another question (I am sure it is the last one tentatively): > >After creating a text.file using dput (let's name the created file >"datam"), >please kindly advise how to use the text file in writing the code using >"structure" like below. > >Thank you. > >code >dta <- structure(list(Species = structure(1:11, .Label = c("Butterfly A1", > >+ "Butterfly A2", "Butterfly A3", "Butterfly A4", "Butterfly B1", >+ "Butterfly B2", "Butterfly B3", "Butterfly B4", "Butterfly B5", >+ "Butterfly C1", "Butterfly C2"), class = "factor"), Range = c(130.5, >+ 450.68, 1102.38, 893.34, 820.2, 872.2, 488.2, 620.11, 982.78, >+ 720.32, 912.2), Latitude = c(9.45, 10.2, 9.3, 16.4, 10.54, 10.87, >+ 16.79, 18.3, 12.98, 12.67, 18.07)), .Names = c("Species", "Range", >+ "Latitude"), class = "data.frame", row.names = c(NA, -11L))) > >Elaine > > >On Mon, Dec 17, 2012 at 7:40 PM, Elaine Kuo <elaine.kuo...@gmail.com> wrote: > >> One more question: >> >> Please kindly explain >> why it is written as "row.names = c(NA, -11L))." >> (in the code below) >> >> I am unsure why it is "negative" 11. >> Thank you . >> >> Elaine >> >> code >> >> dta <- structure(list(Species = structure(1:11, .Label = c("Butterfly A1", >> >> + "Butterfly A2", "Butterfly A3", "Butterfly A4", "Butterfly B1", >> + "Butterfly B2", "Butterfly B3", "Butterfly B4", "Butterfly B5", >> + "Butterfly C1", "Butterfly C2"), class = "factor"), Range = c(130.5, >> + 450.68, 1102.38, 893.34, 820.2, 872.2, 488.2, 620.11, 982.78, >> + 720.32, 912.2), Latitude = c(9.45, 10.2, 9.3, 16.4, 10.54, 10.87, >> + 16.79, 18.3, 12.98, 12.67, 18.07)), .Names = c("Species", "Range", >> + "Latitude"), class = "data.frame", row.names = c(NA, -11L))) >> >> >> >>>> >> >>>> >> >>>> >> ----- Original Message ----- >>>> >> From: David L Carlson <dcarl...@tamu.edu> >>>> >> To: 'Elaine Kuo' <elaine.kuo...@gmail.com>; r-help@r-project.org; >>>> >> 'r-sig-geo' <r-sig-...@stat.math.ethz.ch> >>>> >> Cc: >>>> >> Sent: Sunday, December 16, 2012 11:32 AM >>>> >> Subject: Re: [R] averaging X of specific Y (latitude) >>>> >> >>>> >> It is better to use dput() in R to create a text version of your data >>>> for >>>> >> us >>>> >> to work with. The aggregate command below gives you the mean ranges by >>>> >> butterfly species and latititude and saves the result as Bfly. The >>>> >> colnames() command simply renames the columns: >>>> >> >>>> >>> dta <- structure(list(Species = structure(1:11, .Label = c("Butterfly >>>> >> A1", >>>> >> >>>> >> + "Butterfly A2", "Butterfly A3", "Butterfly A4", "Butterfly B1", >>>> >> + "Butterfly B2", "Butterfly B3", "Butterfly B4", "Butterfly B5", >>>> >> + "Butterfly C1", "Butterfly C2"), class = "factor"), Range = c(130.5, >>>> >> + 450.68, 1102.38, 893.34, 820.2, 872.2, 488.2, 620.11, 982.78, >>>> >> + 720.32, 912.2), Latitude = c(9.45, 10.2, 9.3, 16.4, 10.54, 10.87, >>>> >> + 16.79, 18.3, 12.98, 12.67, 18.07)), .Names = c("Species", "Range", >>>> >> + "Latitude"), class = "data.frame", row.names = c(NA, -11L)) >>>> >>> Bfly <- aggregate(Range~Species+floor(Latitude), dta, mean) >>>> >>> colnames(Bfly) <- c("Species", "Latitude", "Mean") >>>> >>> Bfly >>>> >> Species Latitude Mean >>>> >> 1 Butterfly A1 9 130.50 >>>> >> 2 Butterfly A3 9 1102.38 >>>> >> 3 Butterfly A2 10 450.68 >>>> >> 4 Butterfly B1 10 820.20 >>>> >> 5 Butterfly B2 10 872.20 >>>> >> 6 Butterfly B5 12 982.78 >>>> >> 7 Butterfly C1 12 720.32 >>>> >> 8 Butterfly A4 16 893.34 >>>> >> 9 Butterfly B3 16 488.20 >>>> >> 10 Butterfly B4 18 620.11 >>>> >> 11 Butterfly C2 18 912.20 >>>> >> >>>> >> ---------------------------------------------- >>>> >> David L Carlson >>>> >> Associate Professor of Anthropology >>>> >> Texas A&M University >>>> >> College Station, TX 77843-4352 >>>> >> >>>> >>> -----Original Message----- >>>> >>> From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- >>>> >>> project.org] On Behalf Of Elaine Kuo >>>> >>> Sent: Saturday, December 15, 2012 10:15 PM >>>> >>> To: r-help@r-project.org; r-sig-geo >>>> >>> Subject: [R] averaging X of specific Y (latitude) >>>> >>> >>>> >>> Hello >>>> >>> >>>> >>> >>>> >>> >>>> >>> I have a table describing butterfly range traits. >>>> >>> >>>> >>> It is composed of three columns as below >>>> >>> >>>> >>> >>>> >>> >>>> >>> Species name range size (X) latitude of range midpoint (Y) >>>> >>> >>>> >>> >>>> >>> >>>> >>> There are 11 kinds of butterflies. >>>> >>> >>>> >>> Each has its range size, and the latitude of each range midpoint >>>> ranges >>>> >>> from 9 to 19. >>>> >>> >>>> >>> I would like to have the average range size of every degree of >>>> >>> latitude. >>>> >>> >>>> >>> For example, the average range size of latitude degree 10 >>>> (10.0-10.99: >>>> >>> Butterfly A2, B1, B2) >>>> >>> >>>> >>> Please kindly help with R code to calculate the average values. >>>> >>> >>>> >>> Thank you. >>>> >>> >>>> >>> >>>> >>> Elaine >>>> >>> >>>> >>> >>>> >>> The details are as followed. >>>> >>> >>>> >>> >>>> >>> >>>> >>> Butterfly A1 130.5 9.45 >>>> >>> >>>> >>> Butterfly A2 450.68 10.2 >>>> >>> >>>> >>> Butterfly A3 1102.38 9.3 >>>> >>> >>>> >>> Butterfly A4 893.34 16.4 >>>> >>> >>>> >>> Butterfly B1 820.2 10.54 >>>> >>> >>>> >>> Butterfly B2 872.2 10.87 >>>> >>> >>>> >>> Butterfly B3 488.2 16.79 >>>> >>> >>>> >>> Butterfly B4 620.11 18.3 >>>> >>> >>>> >>> Butterfly B5 982.78 12.98 >>>> >>> >>>> >>> Butterfly C1 720.32 12.67 >>>> >>> >>>> >>> Butterfly C2 912.2 18.07 >>>> >>> >>>> >>> [[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. >>>> >> >>>> >> ______________________________________________ >>>> >> 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. > > ______________________________________________ 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.
