Re: [R] Unusual separators
On Aug 17, 2011, at 05:57 , Jim Holtman wrote: just read in the file using the tab as the separator. if this is a problem because a tab might appear by itself, then use readLines to read in the file, gsub to replace the blank/tab with a new separator, writeLines to write out to a temporary and then read in from the temporary file. You can skip the write and read back step by reading from a text connection. In R 2.14-to-be, there's a text= argument to read.table (and scan too), so you'll be able to do the whole thing on the fly: read.table( text=gsub(readLines(.))) Sent from my iPad On Aug 16, 2011, at 11:02, Matt Curcio matt.curcio...@gmail.com wrote: Hi all, I have a list that I got from a web page that I would like to crunch. Unfortunately, the list has some unusual separators in it. I believe the columns are separated by 1 space and 1 tab. I tried to insert this into the read.table( ..., sep= \t, ...) but got an error that said something like 'only one byte separators can be used. I have thought about using a gsub to 'swap out' the space + tab and replace it with commas, etc but thought there might be another way. Any suggestions? M -- Matt Curcio M: 401-316-5358 E: matt.curcio...@gmail.com __ R-help@r-project.org mailing list 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 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. -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Email: pd@cbs.dk Priv: pda...@gmail.com Døden skal tape! --- Nordahl Grieg __ R-help@r-project.org mailing list 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.
Re: [R] Unusual separators
In the current version (2.13.1) textConnection is much slower if you have a large file (1 lines) than using a temporary output file. Try timing a script using the two different approachs to get an appreciation for the difference. Sent from my iPad On Aug 20, 2011, at 3:39, peter dalgaard pda...@gmail.com wrote: On Aug 17, 2011, at 05:57 , Jim Holtman wrote: just read in the file using the tab as the separator. if this is a problem because a tab might appear by itself, then use readLines to read in the file, gsub to replace the blank/tab with a new separator, writeLines to write out to a temporary and then read in from the temporary file. You can skip the write and read back step by reading from a text connection. In R 2.14-to-be, there's a text= argument to read.table (and scan too), so you'll be able to do the whole thing on the fly: read.table( text=gsub(readLines(.))) Sent from my iPad On Aug 16, 2011, at 11:02, Matt Curcio matt.curcio...@gmail.com wrote: Hi all, I have a list that I got from a web page that I would like to crunch. Unfortunately, the list has some unusual separators in it. I believe the columns are separated by 1 space and 1 tab. I tried to insert this into the read.table( ..., sep= \t, ...) but got an error that said something like 'only one byte separators can be used. I have thought about using a gsub to 'swap out' the space + tab and replace it with commas, etc but thought there might be another way. Any suggestions? M -- Matt Curcio M: 401-316-5358 E: matt.curcio...@gmail.com __ R-help@r-project.org mailing list 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 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. -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Email: pd@cbs.dk Priv: pda...@gmail.com Døden skal tape! --- Nordahl Grieg __ R-help@r-project.org mailing list 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] Unusual separators
Hi all, I have a list that I got from a web page that I would like to crunch. Unfortunately, the list has some unusual separators in it. I believe the columns are separated by 1 space and 1 tab. I tried to insert this into the read.table( ..., sep= \t, ...) but got an error that said something like 'only one byte separators can be used. I have thought about using a gsub to 'swap out' the space + tab and replace it with commas, etc but thought there might be another way. Any suggestions? M -- Matt Curcio M: 401-316-5358 E: matt.curcio...@gmail.com __ R-help@r-project.org mailing list 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.
Re: [R] Unusual separators
just read in the file using the tab as the separator. if this is a problem because a tab might appear by itself, then use readLines to read in the file, gsub to replace the blank/tab with a new separator, writeLines to write out to a temporary and then read in from the temporary file. Sent from my iPad On Aug 16, 2011, at 11:02, Matt Curcio matt.curcio...@gmail.com wrote: Hi all, I have a list that I got from a web page that I would like to crunch. Unfortunately, the list has some unusual separators in it. I believe the columns are separated by 1 space and 1 tab. I tried to insert this into the read.table( ..., sep= \t, ...) but got an error that said something like 'only one byte separators can be used. I have thought about using a gsub to 'swap out' the space + tab and replace it with commas, etc but thought there might be another way. Any suggestions? M -- Matt Curcio M: 401-316-5358 E: matt.curcio...@gmail.com __ R-help@r-project.org mailing list 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 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.
