Dear everyone, I am doing some work about species richness estimation. Nonparametric estimation (such as Chao1, Jacknife1) can be done just using function "specpool()" and "estimateR()" in package "vegan". The problem is that I can not found any functions for parametric estimation (such as MMMeans, MMruns, Michaelis-Menten). Do you know any function for doing this? Thanks a lot. Best wishes, Wenjing
On Wed, 2010-12-01 at 21:23 +0800, yangwenjing wrote:> Dear everyone, > > I am doing some work about species richness estimation. Nonparametric > estimation (such as Chao1, Jacknife1) can be done just using function > "specpool()" and "estimateR()" in package "vegan". The problem is that > I can not found any functions for parametric estimation (such as > MMMeans, MMruns, Michaelis-Menten). Do you know any function for doing > this? Thanks a lot. > > Best wishes, > > WenjingDear Wenjing, You might get more responses if you post to the R SIG Ecology mailing list: https://stat.ethz.ch/mailman/listinfo/r-sig-ecology Good luck, G -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Dr. Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%
Hi:
When the question is: 'Are there any functions in R for <pick your
topic>?',
package sos is a good place to start:
library(sos) # install if necessary
findFn('MMeans')
Well actually, MMMeans and MMruns came up dry, but Michaelis-Menten is a
commonly occurring model in the biosciences:
findFn('Michaelis-Menten')
came up with 37 hits. Since the first two came up dry, perhaps the experts
in sig-ecology can point you to something more specific, as Gavin Simpson
adroitly mentioned.
HTH,
Dennis
On Wed, Dec 1, 2010 at 5:23 AM, yangwenjing <yangwenjing@ibcas.ac.cn>
wrote:
> Dear everyone,
>
> I am doing some work about species richness estimation. Nonparametric
> estimation (such as Chao1, Jacknife1) can be done just using function
> "specpool()" and "estimateR()" in package
"vegan". The problem is that I can
> not found any functions for parametric estimation (such as MMMeans, MMruns,
> Michaelis-Menten). Do you know any function for doing this? Thanks a lot.
>
> Best wishes,
>
> Wenjing
>
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