Hi Yao, Messy, but this is the closest I can get: yhlist<-list(K=matrix(0,ncol=2,nrow=0), GSEGTCSCSSK=matrix(c(6,8),nrow=2,ncol=2), GFSTTCPAHVDDLTPEQVLDGDVNELMDVVLHHVPEAK=matrix(6,ncol=2,nrow=1), LVECIGQELIFLLPNK=matrix(6,ncol=2,nrow=1), NFK=matrix(0,ncol=2,nrow=0), HR=matrix(0,ncol=2,nrow=0), AYASLFR=matrix(0,ncol=2,nrow=0))
colnames(yhlist$K)<-c("start","end") colnames(yhlist$GSEGTCSCSSK)<-c("start","end") colnames(yhlist$GFSTTCPAHVDDLTPEQVLDGDVNELMDVVLHHVPEAK)<-c("start","end") colnames(yhlist$LVECIGQELIFLLPNK)<-c("start","end") colnames(yhlist$NFK)<-c("start","end") colnames(yhlist$HR)<-c("start","end") colnames(yhlist$AYASLFR)<-c("start","end") crunch<-function(x) { start.1<-ifelse(dim(x)[1],x[1,1],NA) start.2<-ifelse(dim(x)[1]>1,x[2,1],NA) return(list(start.1,start.2)) } crunchlist<-sapply(yhlist,crunch,simplify=TRUE) ID<-colnames(crunchlist) colnames(crunchlist)<-NULL data.frame(ID, start.1=unlist(crunchlist[1,]), start.2=unlist(crunchlist[2,])) Jim On Sun, Feb 1, 2015 at 11:53 PM, Yao He <he...@nibs.ac.cn> wrote: > Dear all: > > I have a list like that,which is a standard str_locate_all() function > (stringr package) output: > $K > start end > $GSEGTCSCSSK > start end > [1,] 6 6 > [2,] 8 8 > $GFSTTCPAHVDDLTPEQVLDGDVNELMDVVLHHVPEAK > start end > [1,] 6 6 > $LVECIGQELIFLLPNK > start end > [1,] 4 4 > $NFK > start end > $HR > start end > $AYASLFR > start end > > I want to transform this list like that: > > ID start.1 start.2 > K NA NA > GSEGTCSCSSK 6 8 > GFSTTCPAHVDDLTPEQVLDGDVNELMDVVLHHVPEAK 6 NA > LVECIGQELIFLLPNK 4 NA > NFK NA NA > HR NA NA > AYASLFR NA NA > > I have already tried to use t() , lapply() but I think it is hard to handle > the NA value and different rows in every matrix > > Thanks in advance > > ______________________________________________ > 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.