Multiple subsets of data
Hi, Sorry the formatting has messed up, the common variable is species ( spelt different in both but i have corrected this now) I am having some luck with the which function but am struggling to automate it for all communities
On 6 Jan 2011, at 15:09, John Kane wrote:
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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