Re: [R] Listing function
Lst - list() Lst[[1]] - list(name=Fred, wife=Mary, no.children=3, cild.ages=c(4,7,9)) Lst[[2]] - list(name=Barney, wife=Liz, no.children=2, cild.ages=c(3,5)) I.e. a list of lists Regards Michael Schmitt, Corinna wrote: Hallo, I build a list by the following way: Lst = list(name=Fred, wife=Mary, no.children=3, cild.ages=c(4,7,9)) I know how I can extract the information one by one. But now I want to add a new entry which looks like name=Barney, wife=Liz, no.children=2, cild.ages=c(3,5) How can I add this information to Lst without overwriting the first entry? How can I then extract the corresponding information if I have both entries in Lst? Thanks for helping, Corinna __ R-help@stat.math.ethz.ch 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. -- Michael T. Mader Institute of Stem Cell Research GSF - National Research Center for Environment and Health Ingolstaedter Landstrasse 1 D-85764 Neuherberg 0049-89-3187-3683 Program testing can be quite effective for showing the presence of bugs, but is hopelessly inadequate for showing their absence. E. W. Dijkstra __ R-help@stat.math.ethz.ch 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] Listing function
maybe it'd be better to use a data.frame(), e.g., dat - data.frame(name = I(Fred), wife = I(Mary), no.children = 3, cild.ages1 = 4, cild.ages2 = 7, cild.ages3 = 9) ## new.info - c(name = Barney, wife = Liz, no.children=2, cild.ages1 = 3, cild.ages2 = 5, cild.ages3 = NA) rbind(dat, new.info) I hope it helps. Best, Dimitris Dimitris Rizopoulos Ph.D. Student Biostatistical Centre School of Public Health Catholic University of Leuven Address: Kapucijnenvoer 35, Leuven, Belgium Tel: +32/(0)16/336899 Fax: +32/(0)16/337015 Web: http://med.kuleuven.be/biostat/ http://www.student.kuleuven.be/~m0390867/dimitris.htm - Original Message - From: Schmitt, Corinna [EMAIL PROTECTED] To: r-help@stat.math.ethz.ch Sent: Monday, March 26, 2007 3:26 PM Subject: [R] Listing function Hallo, I build a list by the following way: Lst = list(name=Fred, wife=Mary, no.children=3, cild.ages=c(4,7,9)) I know how I can extract the information one by one. But now I want to add a new entry which looks like name=Barney, wife=Liz, no.children=2, cild.ages=c(3,5) How can I add this information to Lst without overwriting the first entry? How can I then extract the corresponding information if I have both entries in Lst? Thanks for helping, Corinna __ R-help@stat.math.ethz.ch 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. Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm __ R-help@stat.math.ethz.ch 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] Listing function
Use c() to extend your list creating a list of lists: Lst = list(name=Fred, wife=Mary, no.children=3, cild.ages=c(4,7,9)) Lst - c(list(Lst), list(list(name=Barney, wife=Liz, no.children=2, cild.ages=c(3,5 You can give names to the components: Lst - c(Fred=list(Lst), Barney=list(list(name=Barney, wife=Liz, no.children=2, cild.ages=c(3,5 See ?c for more information. You can also use a data.frame if this looks too messy. Petr Schmitt, Corinna napsal(a): Hallo, I build a list by the following way: Lst = list(name=Fred, wife=Mary, no.children=3, cild.ages=c(4,7,9)) I know how I can extract the information one by one. But now I want to add a new entry which looks like name=Barney, wife=Liz, no.children=2, cild.ages=c(3,5) How can I add this information to Lst without overwriting the first entry? How can I then extract the corresponding information if I have both entries in Lst? Thanks for helping, Corinna __ R-help@stat.math.ethz.ch 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. -- Petr Klasterecky Dept. of Probability and Statistics Charles University in Prague Czech Republic __ R-help@stat.math.ethz.ch 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] Listing function displayed as a table
Something ugly like this? Lst - list() Lst[[1]] - list(name=Fred, wife=Mary, no.children=3, child.ages=c(4,7,9)) Lst[[2]] - list(name=Barney, wife=Liz, no.children=2, child.ages=c(3,5)) cbind( do.call(rbind, as.list(Lst))[ ,-4], child.ages=sapply( Lst, function(myli) paste(myli$child.ages, collapse=,) )) Why don't you just save the data in a dataframe instead of a list to begin with ? The only variable I can see that has multiple values is child.ages. Or create one row per record as in most databases. The choice depends on your input. df - rbind( c(Fred, Mary, 4), c(Fred, Mary, 7), c(Fred, Mary, 9), c(Barney, Liz, 3), c(Barney, Liz, 5) ) df - data.frame(df) colnames(df) - c(Father, Mother, Child.Age) df$Child.Age - as.numeric(as.character(df$Child.Age)) parents - paste( df$Father, df$Mother, sep=+ ) getstats - function(x) c( values=paste(x, collapse=,), mean=round(mean(x),2), youngest=min(x), oldest=max(x) ) do.call( rbind, tapply( df$Child.Age, parents, getstats ) ) values mean youngest oldest Barney+Liz 3,5 43 5 Fred+Mary 4,7,9 6.67 4 9 Regards, Adai Schmitt, Corinna wrote: Hallo, good idea it is working. A new question appears: How can I display the entries in a table like name wife no.children child.ages FredMary3 4,7,9 Barney Liz 2 3,5 Thanks, Corinna -Ursprüngliche Nachricht- Von: Michael T. Mader [mailto:[EMAIL PROTECTED] Gesendet: Montag, 26. März 2007 15:32 An: Schmitt, Corinna; r-help@stat.math.ethz.ch Betreff: Re: [R] Listing function Lst - list() Lst[[1]] - list(name=Fred, wife=Mary, no.children=3, cild.ages=c(4,7,9)) Lst[[2]] - list(name=Barney, wife=Liz, no.children=2, cild.ages=c(3,5)) I.e. a list of lists Regards Michael Schmitt, Corinna wrote: Hallo, I build a list by the following way: Lst = list(name=Fred, wife=Mary, no.children=3, cild.ages=c(4,7,9)) I know how I can extract the information one by one. But now I want to add a new entry which looks like name=Barney, wife=Liz, no.children=2, cild.ages=c(3,5) How can I add this information to Lst without overwriting the first entry? How can I then extract the corresponding information if I have both entries in Lst? Thanks for helping, Corinna __ R-help@stat.math.ethz.ch 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@stat.math.ethz.ch 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.
