Re: [R] combining data from multiple read.delim() invocations.

2014-07-02 Thread peter dalgaard
On 01 Jul 2014, at 21:03 , John McKown wrote: > Basically, a "wash". For a stress, I took in all 136 of my files in a > single execution. Output was 22,823 elements in the data.frame. > Yours: > real3m32.651s > user3m26.837s > sys 0m2.292s > > Mine: > real3m24.603s > user3m2

Re: [R] combining data from multiple read.delim() invocations.

2014-07-01 Thread David L Carlson
;,"POSIXct","POSIXct")) David C -Original Message- From: Bert Gunter [mailto:gunter.ber...@gene.com] Sent: Tuesday, July 1, 2014 12:33 PM To: David L Carlson Cc: John McKown; r-help@r-project.org Subject: Re: [R] combining data from multiple read.delim() invocations. Maybe, Davi

Re: [R] combining data from multiple read.delim() invocations.

2014-07-01 Thread Bert Gunter
Maybe, David, but this isn't really it. Your code just basically reproduces the explicit for() loop with the lapply. Maybe there might be some advantage in rbinding the list over incrementally adding rows to the data frame, but I would be surprised if it made much of a difference either way. Of c

Re: [R] combining data from multiple read.delim() invocations.

2014-07-01 Thread David L Carlson
There is a better way. First we need some data. This creates three files in your home directory, each with five rows: write.table(data.frame(rep("A", 5), Sys.time(), Sys.time()), "A.tab", sep="\t", row.names=FALSE, col.names=FALSE) write.table(data.frame(rep("B", 5), Sys.time(), Sys.time(