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
*
*
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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 at 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 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. >-- Ista Zahn Graduate student University of Rochester Department of Clinical and Social Psychology http://yourpsyche.org
I think we need a sample of the orginal data or reasonable facsimile to get an idea of what you are doing. Have a look at ?dput as a way to provide the data in a handy format. --- On Thu, 3/10/11, Muzna Alvi <muzna.alvi at gmail.com> wrote:> From: Muzna Alvi <muzna.alvi at gmail.com> > Subject: [R] Reshape, melt and cast query > To: r-help at r-project.org > Received: Thursday, March 10, 2011, 9:20 AM > 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 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. >