It does indeed! thank you very much, and thanks to mark leeds as well, who emailed me off list with a similar solution.
On 5/19/2010 3:49 PM, Peter Alspach wrote: > Tena koe Allie > > Does > > sapply(myframe, class) > > do what you want? > > Peter Alspach > > >> -----Original Message----- >> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- >> project.org] On Behalf Of Alexander Shenkin >> Sent: Thursday, 20 May 2010 8:19 a.m. >> To: r-help@r-project.org >> Subject: [R] export dataframe's column classes to a list >> >> Hi Folks, >> >> I want to export a dataframe's column classes to a list so that I can >> reinstantiate the dataframe from a CSV file in the future. (I know >> about save(), which I'm using in addition to this). >> >> what I want to do is the following: >> write.csv(myframe); >> col_classes = get_col_classes(myframe); >> write.csv(col_classes, "column_classes") >> >> ... time passes, R gets closed, etc ... >> >> col_classes = read.csv("column_classes") >> new_myframe = read.csv("myfile.csv", colClasses = col_classes) >> >> >> My question is how to construct the "get_col_classes()" function >> > above. > >> Any thoughts are greatly appreciated! >> >> Thanks, >> Allie >> >> -- >> Alexander Shenkin >> PhD Candidate >> School of Natural Resources and Environment >> University of Florida >> >> http://snre.ufl.edu/people/students.asp >> >> ______________________________________________ >> 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.