> On Apr 17, 2018, at 10:10 AM, Allaisone 1 <allaiso...@hotmail.com> wrote: > > > Hi all > > I have a list of multiple datframes with the same column headers. The last > column in each datframe contains a vector of "Interval" class after I have > produced this column using "lubridate" package. I needed to convert my list > of dataframes to be in a single dataframe for further analysis. I did this > using the following syntax : > > SingleDataframe <- ldply (MylistofDFs,data.frame) > > The problem is that after this conversion, the the column with time intervals > has been converted into numeric type with number of seconds during the time > interval instead of the interval itself as follows : > > The column Before conversion looks like this: > > TimeInterval (class 'interval') > 2012-12-13 UTC--2016-02-16 UTC > > but after conversion the list into dataframe, > This column becomes number of seconds as follows : > > TimeInterval (class : numeric) > 100224000 > > Is there any method to convert my list into a a single dataframe without > affecting the types of > vectors in my dataframes?. i.e. I want to keep the interval column as it with > avoidance its conversion into numeric when I convert my list of dataframes > into a single dataframe... Or at least keep the same format of the interval > even if this has been changed to "character" type vector even though I prefer > to be in "interval" class.
There is no base R class called "interval". Perhaps lubridate has not provided you with an `ldply( . ,data.frame)`-accessible method for concatenation. You should construct an example that starts with the loading code for whatever package(s) are being used. > > Any suggestions would be very appreciated. > > Regards > > [[alternative HTML version deleted]] > You should also read the Posting Guide. > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. David Winsemius Alameda, CA, USA 'Any technology distinguishable from magic is insufficiently advanced.' -Gehm's Corollary to Clarke's Third Law ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
