Dear all I'm trying to calculate the number of shared species between sites. I have a dataframe with in the first column the names of the sites; the names of the other columns are the species names. To use the shared function from the package RICH one needs to input different matrices. So actually, I want to split the dataframe per row so that each row becomes a separate matrix and then perform the shared function. I used split(dataframe, site_name), which splits the dataframe, but I cannot call the separate matrices to calculate the number of shared species.. Does anyone know a way to do this? Or does somebody know a better way of determining this? Thanks! Ellen -- View this message in context: http://r.789695.n4.nabble.com/number-of-shared-species-between-sites-VEGAN-or-RICH-tp4635843.html Sent from the R help mailing list archive at Nabble.com.
number of shared species between sites (VEGAN or RICH?)
4 messages · Ellen Pape, Rui Barradas, Peter Dalgaard
Hello, So you want to split data.frame 'dat' by the values of the first column, named 'site', and return the other columns. lapply(split(dat, dat[[ 1 ]]), function(x) x[-1]) Hope this helps, Rui Barradas Em 09-07-2012 13:27, elpape escreveu:
Dear all I'm trying to calculate the number of shared species between sites. I have a dataframe with in the first column the names of the sites; the names of the other columns are the species names. To use the shared function from the package RICH one needs to input different matrices. So actually, I want to split the dataframe per row so that each row becomes a separate matrix and then perform the shared function. I used split(dataframe, site_name), which splits the dataframe, but I cannot call the separate matrices to calculate the number of shared species.. Does anyone know a way to do this? Or does somebody know a better way of determining this? Thanks! Ellen -- View this message in context: http://r.789695.n4.nabble.com/number-of-shared-species-between-sites-VEGAN-or-RICH-tp4635843.html Sent from the R help mailing list archive at Nabble.com.
______________________________________________ R-help at 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.
On Jul 9, 2012, at 21:26 , Rui Barradas wrote:
Hello, So you want to split data.frame 'dat' by the values of the first column, named 'site', and return the other columns. lapply(split(dat, dat[[ 1 ]]), function(x) x[-1])
Got to be easier to split(dat[-1], dat[[1]]), no? -pd
Hope this helps, Rui Barradas Em 09-07-2012 13:27, elpape escreveu:
Dear all I'm trying to calculate the number of shared species between sites. I have a dataframe with in the first column the names of the sites; the names of the other columns are the species names. To use the shared function from the package RICH one needs to input different matrices. So actually, I want to split the dataframe per row so that each row becomes a separate matrix and then perform the shared function. I used split(dataframe, site_name), which splits the dataframe, but I cannot call the separate matrices to calculate the number of shared species.. Does anyone know a way to do this? Or does somebody know a better way of determining this? Thanks! Ellen -- View this message in context: http://r.789695.n4.nabble.com/number-of-shared-species-between-sites-VEGAN-or-RICH-tp4635843.html Sent from the R help mailing list archive at Nabble.com.
______________________________________________ R-help at 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 at 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.
Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Email: pd.mes at cbs.dk Priv: PDalgd at gmail.com
Ouch! Rui Barradas Em 09-07-2012 21:39, peter dalgaard escreveu:
On Jul 9, 2012, at 21:26 , Rui Barradas wrote:
Hello, So you want to split data.frame 'dat' by the values of the first column, named 'site', and return the other columns. lapply(split(dat, dat[[ 1 ]]), function(x) x[-1])
Got to be easier to split(dat[-1], dat[[1]]), no? -pd
Hope this helps, Rui Barradas Em 09-07-2012 13:27, elpape escreveu:
Dear all I'm trying to calculate the number of shared species between sites. I have a dataframe with in the first column the names of the sites; the names of the other columns are the species names. To use the shared function from the package RICH one needs to input different matrices. So actually, I want to split the dataframe per row so that each row becomes a separate matrix and then perform the shared function. I used split(dataframe, site_name), which splits the dataframe, but I cannot call the separate matrices to calculate the number of shared species.. Does anyone know a way to do this? Or does somebody know a better way of determining this? Thanks! Ellen -- View this message in context: http://r.789695.n4.nabble.com/number-of-shared-species-between-sites-VEGAN-or-RICH-tp4635843.html Sent from the R help mailing list archive at Nabble.com.
______________________________________________ R-help at 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 at 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.