On Sep 1, 2011, at 10:46 PM, Jie TANG wrote:
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 ?
I don't know fortran but why not:
filevec <- flnm %in% list.files()
for (i in seq_along(filevec) ) {
...}
--
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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