yes..thats what i was also confused about..but thats what my column is
named..
didnt know any other way of doing it.

On Thu, Mar 10, 2011 at 9:23 PM, jdnewmil@gmail.com <
jdnewmil@dcn.davis.ca.us> wrote:

> I can't see the value of your first melt, which appears to result in a
> column filled with identical values "crop_group".
>
> You really should read the posting guide and provide a reproducible
> example.
>
> I suspect that you would benefit from learning how to use the plyr library.
> --
> Sent from my Android phone with K-9 Mail. Please excuse my brevity.
>
>
> Muzna Alvi <muzna.alvi@gmail.com> wrote:
>>
>> thanks for that ista
>>  actually i want to break this into maybe three different data sets with each of the 3 kinds of sugarcane...
>> it would be better if i could have this in one data set but if someone could tell me how i can run descriplitive statistics on each of the groups
>> separately..
>>  i would need to melt and cast for that right?
>>
>> On Thu, Mar 10, 2011 at 8:46 PM, Ista Zahn <izahn@psych.rochester.edu>wrote:
>>
>> > Hi Muzna,
>> > If I understand your question, it's not really about melting or
>> > casting, but about re-ordering. Try this:
>> >
>> > canefile <- canefile[order(canefile$value), ]
>> >
>> > see ?"[" and ?order
>> >
>> > HTH,
>> > Ista
>> >
>> > On Thu, Mar 10, 2011 at 2:20 PM, Muzna Alvi <muzna.alvi@gmail.com> wrote:
>> > > I have a dataset that is based on crop output for a single crop
>> > > *sugarcane*...but
>> > > each observation is further subdivided into 3 kinds of sugarcane
>> > > i have read the file and have also used melt it to sort it on the
>> > > basis of *crop
>> > > group* using
>> > >
>> > >  melt(sugarcane, m=c("Crop_group")) -> canefile
>> > >
>> > > this is how it has cast the data
>> > >
>> > >  variable                     value
>> > > 1 Crop_group  Sugarcane (first ratoon)
>> > > 2 Crop_group  Sugarcane (planted crop)
>> > > 3 Crop_group  Sugarcane (planted crop)
>> > > 4 Crop_group Sugarcane (second ratoon)
>> > > 5 Crop_group  Sugarcane (first ratoon)
>> > > 6 Crop_group  Sugarcane (planted crop)
>> > >
>> > >
>> > > now i need to *cast *the data so  that i can have each of the 20 odd
>> > > variables sorted according to the 3 subdivisions under *Crop_group *ie
>> > first
>> > > ratoon), second ratoon etc etc..
>> > >
>> > > i tried using
>> > >
>> > > cast (canefile, ~value) -> canefile
>> > >
>> > > but it said "Aggregation requires fun.aggregate: length used as default"
>> > >
>> > > i want to cast it on all the 20 variables and sort it on the basis of
>> > first
>> > > ratoon, second ratoon and planted crop
>> > >
>> > > How i do my CAST command?
>> > >
>> > > I hope my question is clear...thanks in advance
>> > >
>> > > *
>> > > *
>> > > *
>> > > *
>> > > --
>> > > --
>> > >
>> > >        [[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.
>> > >
>> >
>> >
>> >
>> > --
>> > Ista Zahn
>> > Graduate student
>> > University of Rochester
>> > Department of Clinical and Social Psychology
>> > http://yourpsyche.org
>> >
>>
>> --
>> --
>>
>> 	[[alternative HTML version deleted]]
>> ------------------------------
>> R-help@r-project.org mailing listhttps://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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