Re: [R] Two conditions selection
cycle %% filter(col == blue, cycle == 1) On Tue, Aug 4, 2015 at 18:59 Rodrigo Díaz rodlupa...@hotmail.com wrote: Hi. I have a matrix like this: cycle=c(rep(1,3),rep(2,3),rep(3,3),rep(4,3))col=c(rep(blue,2),rep(green,2),rep(blue,2),rep(green,2),rep(blue,2),rep(green,2))values=c(1:12)data.frame(cycle,col,values) # cycle col values#1 1 blue 1#2 1 blue 2#3 1 green 3#4 2 green 4#5 2 blue 5#6 2 blue 6#7 3 green 7#8 3 green 8#9 3 blue 9#10 4 blue 10#11 4 green 11#12 4 green 12 I want to select or extract values matching 2 conditions. For example: values from col blue and cycle 1. If I use : values[col==blue] I get all blue values. I tried using values[c(col==blue,cycle==1)] but is not working. Please help. I have a very big data matrix and I do not wanna go to excel and start cutting the data. Thanks. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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 -- To UNSUBSCRIBE and more, see 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] Two conditions selection
You need to read up on indexing in R. What you want is logical indexing. You can use just the vectors you created (since you didn't save the data frame that you created) like this cycle=c(rep(1,3),rep(2,3),rep(3,3),rep(4,3)) col=c(rep(blue,2),rep(green,2),rep(blue,2),rep(green,2),rep(blue,2),rep(green,2)) values=c(1:12) values[col==blue cycle==1] Or save the data frame and return the rows that you want like this df - data.frame(cycle,col,values) df[df$col==blue df$cycle==1, ] Hope this is helpful, Dan Daniel Nordlund, PhD Research and Data Analysis Division Services Enterprise Support Administration Washington State Department of Social and Health Services -Original Message- From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Rodrigo Díaz Sent: Tuesday, August 04, 2015 1:50 PM To: r-help@r-project.org Subject: [R] Two conditions selection Hi. I have a matrix like this: cycle=c(rep(1,3),rep(2,3),rep(3,3),rep(4,3))col=c(rep(blue,2),rep(green,2),rep(blue,2),rep(green,2),rep(blue,2),rep(green,2))values=c(1:12)data.frame(cycle,col,values) # cycle col values#1 1 blue 1#2 1 blue 2#3 1 green 3#4 2 green 4#5 2 blue 5#6 2 blue 6#7 3 green 7#8 3 green 8#9 3 blue 9#10 4 blue 10#11 4 green 11#12 4 green 12 I want to select or extract values matching 2 conditions. For example: values from col blue and cycle 1. If I use : values[col==blue] I get all blue values. I tried using values[c(col==blue,cycle==1)] but is not working. Please help. I have a very big data matrix and I do not wanna go to excel and start cutting the data. Thanks. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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 -- To UNSUBSCRIBE and more, see 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] Two conditions selection
Hi. I have a matrix like this: cycle=c(rep(1,3),rep(2,3),rep(3,3),rep(4,3))col=c(rep(blue,2),rep(green,2),rep(blue,2),rep(green,2),rep(blue,2),rep(green,2))values=c(1:12)data.frame(cycle,col,values) # cycle col values#1 1 blue 1#2 1 blue 2#3 1 green 3#4 2 green 4#5 2 blue 5#6 2 blue 6#7 3 green 7#8 3 green 8#9 3 blue 9#10 4 blue 10#11 4 green 11#12 4 green 12 I want to select or extract values matching 2 conditions. For example: values from col blue and cycle 1. If I use : values[col==blue] I get all blue values. I tried using values[c(col==blue,cycle==1)] but is not working. Please help. I have a very big data matrix and I do not wanna go to excel and start cutting the data. Thanks. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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] Two conditions selection
Sorry. In dplyr: data %% filter(col == blue, cycle ==1) %% select(values) On Tue, Aug 4, 2015 at 19:54 James Hedges jhedg...@gmail.com wrote: cycle %% filter(col == blue, cycle == 1) On Tue, Aug 4, 2015 at 18:59 Rodrigo Díaz rodlupa...@hotmail.com wrote: Hi. I have a matrix like this: cycle=c(rep(1,3),rep(2,3),rep(3,3),rep(4,3))col=c(rep(blue,2),rep(green,2),rep(blue,2),rep(green,2),rep(blue,2),rep(green,2))values=c(1:12)data.frame(cycle,col,values) # cycle col values#1 1 blue 1#2 1 blue 2#3 1 green 3#4 2 green 4#5 2 blue 5#6 2 blue 6#7 3 green 7#8 3 green 8#9 3 blue 9#10 4 blue 10#11 4 green 11#12 4 green 12 I want to select or extract values matching 2 conditions. For example: values from col blue and cycle 1. If I use : values[col==blue] I get all blue values. I tried using values[c(col==blue,cycle==1)] but is not working. Please help. I have a very big data matrix and I do not wanna go to excel and start cutting the data. Thanks. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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 -- To UNSUBSCRIBE and more, see 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] Two conditions selection
Rodrigo Díaz wrote Hi. I have a matrix like this: cycle=c(rep(1,3),rep(2,3),rep(3,3),rep(4,3))col=c(rep(blue,2),rep(green,2),rep(blue,2),rep(green,2),rep(blue,2),rep(green,2))values=c(1:12)data.frame(cycle,col,values) # cycle col values#1 1 blue 1#2 1 blue 2#3 1 green 3#4 2 green 4#5 2 blue 5#6 2 blue 6#7 3 green 7#8 3 green 8#9 3 blue 9#10 4 blue 10#11 4 green 11#12 4 green 12 I want to select or extract values matching 2 conditions. For example: values from col blue and cycle 1. If I use : values[col==blue] I get all blue values. I tried using values[c(col==blue,cycle==1)] but is not working. Please help. I have a very big data matrix and I do not wanna go to excel and start cutting the data. Thanks. [[alternative HTML version deleted]] __ R-help@ mailing list -- To UNSUBSCRIBE and more, see 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. How about # Your Code cycle=c(rep(1,3),rep(2,3),rep(3,3),rep(4,3)) col=c(rep(blue,2),rep(green,2),rep(blue,2),rep(green,2),rep(blue,2),rep(green,2)) values=c(1:12) df - data.frame(cycle,col,values) # Subset data frame df df[cycle==1 col==blue,] HTH Pete -- View this message in context: http://r.789695.n4.nabble.com/Two-conditions-selection-tp4710762p4710763.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
