There is indeed a ?cast help topic in reshape2, but there is no cast function. Instead there is dcast (returns a data.frame) and acast(returns an array).
Bruce, you can try your original example with input.cast <- dcast(input.melt, Species ~ Date, fun.aggregate = sum) Best, Ista On Wed, Jun 5, 2013 at 11:55 AM, Thomas Adams <tea...@gmail.com> wrote: > Bruce, > > I'm not sure what's going on since I tried this on my Linux system running > R 3.0.0 and just did: > > library(reshape2) > help(cast) > > and the help for 'cast' came up. There was no indication to me that > 'reshape' was needed and I can not see a dependency in CRAN for 'reshape'. > But I built R from source when installing R 3.0.0 and all the packages I > use had to be reinstalled... > > Great research, BTW! > > Tom > > > On Wed, Jun 5, 2013 at 11:42 AM, Neotropical bat risk assessments < > neotropical.b...@gmail.com> wrote: > >> Hi again all, >> Several replied ASAP that I also needed reshape loaded and not just >> reshape2. >> Hmmm tried that and I had some output but not the correct format. >> >> What I need is to run simulations of time overlap between species as per >> the simulation program data input constraints: >> >> The basis for the simulations is a species by _time-use matrix in which >> species are arranged in rows, and time intervals are arranged >> chronologically in columns.___ TimeOverlap only uses text tab-delimited >> files with no headings for columns or rows.Empirical data must be >> specified in proportional abundances (0 to 100) and totals for each >> species should be the same (100%). >> >> With the existing code the result was rows were correct for species but >> dates were used for columns rather than the times. >> >> The input file read has long format 4 columns - species; location; date; >> time. >> >> It dawns on me I may need to have a sub sample of the main data set by >> Location ID first then have the code run but for time values and not dates. >> >> I need to tweak this a bit more to see if I can figure that out as well. >> >> I will have many repetitions of this dat reformatting so it is important >> I get the code correct one time so I can run this on the gazillion or so >> data sets accumulated. >> >> Rather than use reshape can I use _recast_ in place of cast and stick >> with reshape2? >> >> Bruce >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> 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. >> > > [[alternative HTML version deleted]] > > ______________________________________________ > 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.
