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
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 ?0.12555510 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.finkbeiner at 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

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--
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?

remove data frame from list of data frames

Thread (4 messages)