A request for suggestions about FD
Hi Zhifeng, We need rather more information to help here. At least, your OS, version of R, version of FD - sessionInfo() will provide much of it. What are the dimensions of your data frame? What is the output of str() for your data frame? When you say "crashed," what exactly happened? Did you receive error messages or warnings? Did R quit entirely? Can you provide a small subset of your data that reproduces the problem? Sarah
On Wed, Aug 24, 2011 at 9:51 AM, zhf ding <dingzhf at gmail.com> wrote:
Dear list, ? ?I am a beginner in R. Now I conduct my research in the Thousand Island Lake, China, 50-year isolated islands in a man-made lake, to study the impacts of habitat fragmentation on bird functional diversity (FRic, FEve, FDiv and FDis). ? ?But I faced some problems. I couldn?t calculate the FD indices. In the R manual for FD (FD package, Laliberte & Legendre 2010), the x arguments could be numeric, ordered or factor. In my data set, x matrix contains one continuous trait and thirteen categorical traits with values of 1 or 0. When I run the dbFD program, the R was crashed. What should i do? If possible, could you please explain it in detail at your convenience? ? Any help would be greatly appreciated, ? Zhifeng Lalibert?, E. & P. Legendre (2010): A distance-based framework for measuring functional diversity from multiple traits. - Ecology, 91(1),2010, pp. 299?305
Sarah Goslee http://www.functionaldiversity.org