Multiple subsets of data
Is there any common variable? From your description, I don't see how you would link a species to a community. I mean if you select species a in df1 how would you know what community it is in?
--- On Thu, 1/6/11, Chris Mcowen <chrismcowen at gmail.com> wrote:
From: Chris Mcowen <chrismcowen at gmail.com> Subject: [R] Multiple subsets of data To: r-help at r-project.org Received: Thursday, January 6, 2011, 6:29 AM Dear List, I have a data frame called trait with roughly 800 species in, each species have 15 columns of information: Species??? ??? 1??? 2??? 3??? etc.. a??? ??? ??? t??? y??? h b??? ??? ??? f??? j??? u c??? ??? ??? r??? y??? u etc.. I then have another data frame called com with the composition of species in each region, there are 506 different communities: community??? species NA1102??? ??? a NA1102??? ??? c NA0402??? ??? b NA0402??? ??? c AT1302??? ??? a AT1302??? ??? b etc.. What i want to do is extract the information held in the first data frame for each community and save this as a new data frame. Resulting in : - community_NA1102??? a??? ??? ??? t??? y??? h c??? ??? ??? r??? y??? u community_NA0402??? b??? ??? ??? f??? j??? u c??? ??? ??? r??? y??? u Thanks in advance for any suggestions / code.
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