On Apr 1, 2015, at 3:34 AM, Alaios via R-help wrote: > Dear all,I have a R structure that was created with replicate.The data sets > looks to be a matrix with each cell being a list. > str(error_suburban_0[,1],max.level=1) > List of 4 > $ vaR :List of 20 > ..- attr(*, "class")= chr "variogram" > $ Shadowing:List of 2 > ..- attr(*, "class")= chr "geodata" > $ FIT :List of 1 > $ propmodel:List of 12 > ..- attr(*, "class")= chr "lm" > > > The error_suburban is a matrix that each field so > error_suburban_0[,1], error_suburban_0[,2], error_suburban_0[,3], > error_suburban_0[,4],... and so on, contains the four sublists > $ vaR :List of 20 > ..- attr(*, "class")= chr "variogram" > $ Shadowing:List of 2 > ..- attr(*, "class")= chr "geodata" > $ FIT :List of 1 > $ propmodel:List of 12 > ..- attr(*, "class")= chr "lm" > > > I would like to pick for each of these matrix elements to collect only the > $Shadowing sublist > error_suburban_0[,1], error_suburban_0[,2], error_suburban_0[,3], > error_suburban_0[,4]... and so on > > Right now I am implementing this by a for loop that access each matrix > element sequentially.
It would have been better to show the results of dim() or dput(). Matrix objects (which are capable of holding lists) should be accessible with either a single or double argument to "[". This should deliver contents: for (i in 1:4) print( error_suburban_0[i]$Shadowing ) If the matrix has 4 or more rows, then that would be accessing only from the first column. If fewer than 4 rows, you would be wrapping around to later columns. -- David. > > Can you please advice me if there is a better approach to do that in R? > Regards > Alex > > > [[alternative HTML version deleted]] This is a plain text mailing list. Please reconfigure your email client to sent in plain text. -- David Winsemius Alameda, CA, USA ______________________________________________ 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.
