[R-sig-eco] cocorresp to determine best of several predictor communities

2013-01-23 Thread Jacob Cram
Species Composition. Ecology 89:782–794. Thanks everyone for your consideration in this matter. Sincerely, Jacob Cram Graduate Student Department of Biological Sciences University of Southern California [[alternative HTML version deleted

[R-sig-eco] Mantel test with multiple imputation, P values

2013-08-18 Thread Jacob Cram
Dear List, I have an environmental data set with several missing values that I am trying to relate to a community structure data set using a mantel test. One solution to the missing data problem seems to be multiple imputation; I am using the Amelia package. This generates several (five in

Re: [R-sig-eco] Mantel test with multiple imputation, P values

2013-08-18 Thread Jacob Cram
, Aug 18, 2013 at 2:19 PM, Krzysztof Sakrejda krzysztof.sakre...@gmail.com wrote: Hi Jacob, comments below. On Aug 18, 2013 2:31 PM, Jacob Cram cramj...@gmail.com wrote: Dear List, I have an environmental data set with several missing values that I am trying to relate to a community

[R-sig-eco] Cosinor with data that trend over time

2014-03-25 Thread Jacob Cram
Hello all, I am thinking about applying season::cosinor() analysis to some irregularely spaced time series data. The data are unevenly spaced, so usual time series methods, as well as the nscosinor() function are out. My data do however trend over time and I am wondering if I can feed date as

Re: [R-sig-eco] Cosinor with data that trend over time

2014-03-26 Thread Jacob Cram
to something that works. HTH G On 26 March 2014 10:02, Jacob Cram cramj...@gmail.com wrote: Thanks Gavin, This seems like a promising approach and a first pass suggests it works with this data. I can't quite figure out how I would go about interrogating the fitted spline to deterine when

Re: [R-sig-eco] Cosinor with data that trend over time

2014-03-30 Thread Jacob Cram
. You can't really make much practical use out of those values are they relate specifically to way the penalised regression spline model has been converted into an equivalent linear mixed effect form. HTH G On 26 March 2014 12:10, Jacob Cram cramj...@gmail.com wrote: Thanks again Gavin

[R-sig-eco] El Nino and GAMM Model of a Seasonal and Long Term Time Series

2014-04-01 Thread Jacob Cram
Hello Gavin and R-sig-ecology list, Based on Gavin Simpson's very helpful advice on this forum, I have been modelling biotic and environmental parameters using a generalized additive mixed model of the form mod - gamm(logit.Area ~ s(DoY, bs = cc) + s(elapsed.days), data = lldata,

[R-sig-eco] Rarefying metagenome data table

2016-03-10 Thread Jacob Cram
anyone have any suggestions? Thank you for your time. Sincerely, Jacob Cram ___ R-sig-ecology mailing list R-sig-ecology@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-ecology