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I'm trying to figure out how to repeat a series of commands in R and have the outputs added to a dataframe after each iteration. My code starts this way... a<-read.csv("File1.csv") b<-read.csv("File2.csv")

hi ,when i read a lots of files for (i in 1:totnum) { cop_x_data<-read.table(flnm[i],skip=2) if(i==1) {cop_data=cop_x_data} else {cop_data=rbind(cop_data,cop_x_data)} } some of the files are missing . so this loop can not go on .I wonder how can I go on the loop cycle while reading the files just like the command read(unit,err=linenum) in fortran ? thank you . -- TANG Jie [[alternative