[R] plyr workaround to converting by() to a data frame

Dear all Is there a clean plyr version of the following by() and do.call(rbind, ...) construct: df-data.frame(a=1:10,b=11:20,c=21:30,grp1=c(x,y),grp2=c(x,y),grp3=c(x,y)) dfsum-by(df[c(a,b,c)], df[c(grp1,grp2,grp3)], range) as.data.frame(dfsum) Error in as.data.frame.default(dfsum) : cannot

Re: [R] plyr workaround to converting by() to a data frame

Date: Thu, 7 Apr 2011 18:39:30 +0200 Subject: [R] plyr workaround to converting by() to a data frame Dear all Is there a clean plyr version of the following by() and do.call(rbind, ...) construct: df-data.frame(a=1:10,b=11:20,c=21:30,grp1=c(x,y),grp2=c(x,y),grp3=c(x,y)) dfsum-by(df[c(a,b,c)], df