[R] reshape2 issue continued

John Kane jrkrideau at inbox.com
Wed Jun 5 21:04:21 CEST 2013


Interestingly enoughhelp(cast) did not work but ?cast does

As Ista says, there is no cast() in reshape2 

John Kane
Kingston ON Canada


> -----Original Message-----
> From: tea3rd at gmail.com
> Sent: Wed, 5 Jun 2013 11:55:43 -0400
> To: neotropical.bats at gmail.com
> Subject: Re: [R] reshape2 issue continued
> 
> 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.bats at 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 at 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 at 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.

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