[R] remove data frame from list of data frames
I have a list of data frames like this: a- data.frame(x=runif(10), y = runif(10), Acc = 1) b- data.frame(x=runif(10), y = runif(10), Acc = 0) ls- list(a,b) and I want to remove the data frames from ls that have Acc values other than 1. How do I do that? Thanks for any help! Matthew __ 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] remove data frame from list of data frames
Is this what you are asking; this accepts any dataframe that has at least one Acc = 1; changing 'any' to 'all' means all Acc==1. Play around and get what you need: ls- list(a,b) ls [[1]] x y Acc 1 0.26550866 0.2059746 1 2 0.37212390 0.1765568 1 3 0.57285336 0.6870228 1 4 0.90820779 0.3841037 1 5 0.20168193 0.7698414 1 6 0.89838968 0.4976992 1 7 0.94467527 0.7176185 1 8 0.66079779 0.9919061 1 9 0.62911404 0.3800352 1 10 0.06178627 0.7774452 1 [[2]] x y Acc 1 0.93470523 0.4820801 0 2 0.21214252 0.5995658 0 3 0.65167377 0.4935413 0 4 0.1210 0.1862176 0 5 0.26722067 0.8273733 0 6 0.38611409 0.6684667 0 7 0.01339033 0.7942399 0 8 0.38238796 0.1079436 0 9 0.86969085 0.7237109 0 10 0.34034900 0.4112744 0 sapply(ls, function(x) any(x$Acc == 1)) [1] TRUE FALSE ls[sapply(ls, function(x) any(x$Acc == 1))] [[1]] x y Acc 1 0.26550866 0.2059746 1 2 0.37212390 0.1765568 1 3 0.57285336 0.6870228 1 4 0.90820779 0.3841037 1 5 0.20168193 0.7698414 1 6 0.89838968 0.4976992 1 7 0.94467527 0.7176185 1 8 0.66079779 0.9919061 1 9 0.62911404 0.3800352 1 10 0.06178627 0.7774452 1 On Sun, Nov 7, 2010 at 6:07 AM, Matthew Finkbeiner matthew.finkbei...@mq.edu.au wrote: I have a list of data frames like this: a- data.frame(x=runif(10), y = runif(10), Acc = 1) b- data.frame(x=runif(10), y = runif(10), Acc = 0) ls- list(a,b) and I want to remove the data frames from ls that have Acc values other than 1. How do I do that? Thanks for any help! Matthew __ 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 Cincinnati, OH +1 513 646 9390 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.
Re: [R] remove data frame from list of data frames
Thank you Jim (and others who responded off list). This does the trick for me perfectly: ls[sapply(ls, function(x) all(x$Acc == 1))] Thanks again! Matthew On Sun, Nov 7, 2010 at 11:34 PM, jim holtman jholt...@gmail.com wrote: Is this what you are asking; this accepts any dataframe that has at least one Acc = 1; changing 'any' to 'all' means all Acc==1. Play around and get what you need: ls- list(a,b) ls [[1]] x y Acc 1 0.26550866 0.2059746 1 2 0.37212390 0.1765568 1 3 0.57285336 0.6870228 1 4 0.90820779 0.3841037 1 5 0.20168193 0.7698414 1 6 0.89838968 0.4976992 1 7 0.94467527 0.7176185 1 8 0.66079779 0.9919061 1 9 0.62911404 0.3800352 1 10 0.06178627 0.7774452 1 [[2]] x y Acc 1 0.93470523 0.4820801 0 2 0.21214252 0.5995658 0 3 0.65167377 0.4935413 0 4 0.1210 0.1862176 0 5 0.26722067 0.8273733 0 6 0.38611409 0.6684667 0 7 0.01339033 0.7942399 0 8 0.38238796 0.1079436 0 9 0.86969085 0.7237109 0 10 0.34034900 0.4112744 0 sapply(ls, function(x) any(x$Acc == 1)) [1] TRUE FALSE ls[sapply(ls, function(x) any(x$Acc == 1))] [[1]] x y Acc 1 0.26550866 0.2059746 1 2 0.37212390 0.1765568 1 3 0.57285336 0.6870228 1 4 0.90820779 0.3841037 1 5 0.20168193 0.7698414 1 6 0.89838968 0.4976992 1 7 0.94467527 0.7176185 1 8 0.66079779 0.9919061 1 9 0.62911404 0.3800352 1 10 0.06178627 0.7774452 1 On Sun, Nov 7, 2010 at 6:07 AM, Matthew Finkbeiner matthew.finkbei...@mq.edu.au wrote: I have a list of data frames like this: a- data.frame(x=runif(10), y = runif(10), Acc = 1) b- data.frame(x=runif(10), y = runif(10), Acc = 0) ls- list(a,b) and I want to remove the data frames from ls that have Acc values other than 1. How do I do that? Thanks for any help! Matthew __ 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 Cincinnati, OH +1 513 646 9390 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.
Re: [R] remove data frame from list of data frames
Try this also: ls[colSums(sapply(ls, '[[', 'Acc')) 0] On Sun, Nov 7, 2010 at 9:07 AM, Matthew Finkbeiner matthew.finkbei...@mq.edu.au wrote: I have a list of data frames like this: a- data.frame(x=runif(10), y = runif(10), Acc = 1) b- data.frame(x=runif(10), y = runif(10), Acc = 0) ls- list(a,b) and I want to remove the data frames from ls that have Acc values other than 1. How do I do that? Thanks for any help! Matthew __ 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. -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40 S 49° 16' 22 O [[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.
