great!! thanks very much, mean(unlist(lapply(listdata, function(z) z$c))) works well. and what about getting the average table $a (displaying the average elements across all 1000 matrix)? could you please help me? I am struggling with this... thanks in advance Roberto mean(unlist(lapply(x, function(z) z$d))) should do the trick On Sun, 12 Feb 2006 20:06:12 +0000, statistical.model at googlemail.com wrote:> hi all, > I have a simple problem that i am not able to solve. I've a list called > datalist with the following structure: > > [...] > > [[10]] > [[10]]$a > > -1 0 1 > -1 31 5 2 > 0 6 7 5 > 1 1 7 36 > > [[10]]$b > > -1 0 1 > -1 31 5 2 > 0 6 7 5 > 1 1 7 36 > > [[10]]$c > [1] 0.855 > > [[10]]$d > [1] 0.855 > > [...] > > with [[1]] ... [[100]]. How can i get the mean value of datalist[[x]]$d, > where x represents all elements from 1 to 1000 ? > > thanks in advance!!!! > > Roberto Furlan > University of Turin > > ---------------------------------------- > La mia Cartella di Posta in Arrivo ?? protetta da SPAMfighter > 205 messaggi contenenti spam sono stati bloccati con successo. > Scarica gratuitamente SPAMfighter! > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide!http://www.R-project.org/posting-guide.html> > >Rajarshi Guha <rxg218 at psu.edu> <http://jijo.cjb.net> ---------------------------------------- La mia Cartella di Posta in Arrivo ?? protetta da SPAMfighter 205 messaggi contenenti spam sono stati bloccati con successo. Scarica gratuitamente SPAMfighter!
statistical.model at googlemail.com wrote:> great!! thanks very much, mean(unlist(lapply(listdata, function(z) z$c)))WHY unlist(lapply(... when sapply(... is simpler? Kjetil> works well. > and what about getting the average table $a (displaying the average elements > across all 1000 matrix)? could you please help me? I am struggling with > this... > > thanks in advance > Roberto > > > > mean(unlist(lapply(x, function(z) z$d))) should do the trick > > On Sun, 12 Feb 2006 20:06:12 +0000, statistical.model at googlemail.com wrote: > >> hi all, >> I have a simple problem that i am not able to solve. I've a list called >> datalist with the following structure: >> >> [...] >> >> [[10]] >> [[10]]$a >> >> -1 0 1 >> -1 31 5 2 >> 0 6 7 5 >> 1 1 7 36 >> >> [[10]]$b >> >> -1 0 1 >> -1 31 5 2 >> 0 6 7 5 >> 1 1 7 36 >> >> [[10]]$c >> [1] 0.855 >> >> [[10]]$d >> [1] 0.855 >> >> [...] >> >> with [[1]] ... [[100]]. How can i get the mean value of datalist[[x]]$d, >> where x represents all elements from 1 to 1000 ? >> >> thanks in advance!!!! >> >> Roberto Furlan >> University of Turin >> >> ---------------------------------------- >> La mia Cartella di Posta in Arrivo ?? protetta da SPAMfighter >> 205 messaggi contenenti spam sono stati bloccati con successo. >> Scarica gratuitamente SPAMfighter! >> >> ______________________________________________ >> R-help at stat.math.ethz.ch mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html >> >> > > Rajarshi Guha > <rxg218 at psu.edu> > <http://jijo.cjb.net> > > ---------------------------------------- > La mia Cartella di Posta in Arrivo ?? protetta da SPAMfighter > 205 messaggi contenenti spam sono stati bloccati con successo. > Scarica gratuitamente SPAMfighter! > > > > ------------------------------------------------------------------------ > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html