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...rays" or "hashes", of which factors are an elementary example. -- Bert On Mon, Oct 24, 2011 at 6:00 AM, Petr PIKAL <petr.pikal@precheza.cz> wrote: > Hi > > If you want to get rid of regular expressions at all and your A values > start AWI for Arctic and UFT for boreal you can > > DF$D <- ifelse(substr(DF$A, 1,1) == "A", "Arctic", "Boreal") > > Regards > Petr > > > > > > > Hello, > > I am just starting with R and I am having a (most probably) stupid > problem > > by creating a new...

...bles: ?$ Location??????? : Factor w/ 27 levels "Australia","Brazil",..: 8 2 13 19 22 14 16 23 6 7 ... ?$ Vegetation????? : Factor w/ 21 levels "Beech","Broadleaf evergreen laurel",..: 17 21 2 16 15 16 9 16 3 4 ... ?$ Vegetation.Class: Factor w/ 4 levels "Boreal and Temperate Evergreen",..: 3 3 4 1 1 1 4 1 4 1 ... ?$ Observation???? : num? 24 8.9 14.7 26.7 42.4 31.7 30.8 7.5 14 22 ... ?$ Simulation????? : num? 33.9 7.8 9.74 7.6 11.8 10.7 12 28.1 1.7 1.7 ... I hope someone is able to point me in the right direction. Many thanks, Steve...

...en forest, dense broad-leaved forest, barren, etc.). A statistician advised me to use the randomForest package in R and using a sub-set to generate the random Forest, I get a very good prediction for the rest. However, I need to evaluate how meaningful this classification is in an ecological sense (boreal trees should not play a role in the definition of tropical land-cover types, for example), otherwise I cannot judge the quality of the vegetation model's output. Unfortunately, randomForest gives me about 15.000 splits of which about 5000 are end branches (rough guess), so it's very hard a...

...Here is the error message: ### Warning message: Estimated variance for factor 'factor(cdrgsaou2$ids)' is effectively zero in: LMEopt(x = mer, value = cv) ### Thank you very much by advance for any help. J?r?me Lema?tre Ph.D. student Silviculture-wildlife research chair in irregular boreal forests & D?partment of biology, Faculty of Sciences and Engineering Alexandre-Vachon building University Laval Quebec, QC G1K 7P4 Phone : (418) 656-2131 poste 2917 Office : VCH-2044 Email: jerome.lemaitre.1 at ulaval.ca

...Zuercherstrasse 111 CH-8903 Birmensdorf, Switzerland Tel +41-44-7392-277 (office) -111(exchange) Fax +41-44-7392-215 (fax) christian.hoffmann at wsl.ch http://www.wsl.ch/staff/christian.hoffmann International Conference 5.-7.6.2006 Ekaterinburg Russia "Climate changes and their impact on boreal and temperate forests" http://ecoinf.uran.ru/conference/

...Zuercherstrasse 111 CH-8903 Birmensdorf, Switzerland Tel +41-44-7392-277 (office) -111(exchange) Fax +41-44-7392-215 (fax) christian.hoffmann at wsl.ch http://www.wsl.ch/staff/christian.hoffmann International Conference 5.-7.6.2006 Ekaterinburg Russia "Climate changes and their impact on boreal and temperate forests" http://ecoinf.uran.ru/conference/

...Zuercherstrasse 111 CH-8903 Birmensdorf, Switzerland Tel +41-44-7392-277 (office) -111(exchange) Fax +41-44-7392-215 (fax) christian.hoffmann at wsl.ch http://www.wsl.ch/staff/christian.hoffmann International Conference 5.-7.6.2006 Ekaterinburg Russia "Climate changes and their impact on boreal and temperate forests" http://ecoinf.uran.ru/conference/

...Zuercherstrasse 111 CH-8903 Birmensdorf, Switzerland Tel +41-44-7392-277 (office) -111(exchange) Fax +41-44-7392-215 (fax) christian.hoffmann at wsl.ch http://www.wsl.ch/staff/christian.hoffmann International Conference 5.-7.6.2006 Ekaterinburg Russia "Climate changes and their impact on boreal and temperate forests" http://ecoinf.uran.ru/conference/

...loning in R. The R Journal, 2(2):29-37. URL: http://journal.r-project.org/archive/2010-2/RJournal_2010-2_Solymos.pdf The current release of 'dclone' supports parallel computations via the 'snow' package. Have fun, Peter Peter Solymos Alberta Biodiversity Monitoring Institute and Boreal Avian Modelling project Department of Biological Sciences CW 405, Biological Sciences Bldg University of Alberta Edmonton, Alberta, T6G 2E9, Canada Phone: 780.492.8534 Fax: 780.492.7635 email <- paste("solymos", "ualberta.ca", sep = "@") http://www.abmi.ca http://ww...

...nner loop in dropterm.glm() and addterm.glm() would not break anything, and would make stepAIC() safe to use on models returned by glm.nb(). Am I missing something? I note that v.1.4 has some new AIC methods. Should I migrate? Any comments or suggestions would be much appreciated. Steve Cumming Boreal Ecosystems Research Ltd. P.S. I don't know how to express my gratitude and amazement to the people responsible for R, so I'll just say "thanks". -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.a...

...Cameron and Trivedi, McCullagh and Nelder) are silent on these points, and? I can find nothing on the Web or the obvious list archives (nothing I recognise, anyway). If any read?er of this group can offer advice, suggestions, or references, I'd s?ure appreciate it. Best regards Steve Cumming Boreal Ecosystems Research Ltd. http://www.berl.ab.ca

...Zuercherstrasse 111 CH-8903 Birmensdorf, Switzerland Tel +41-44-7392-277 (office) -111(exchange) Fax +41-44-7392-215 (fax) christian.hoffmann at wsl.ch http://www.wsl.ch/staff/christian.hoffmann International Conference 5.-7.6.2006 Ekaterinburg Russia "Climate changes and their impact on boreal and temperate forests" http://ecoinf.uran.ru/conference/

...loning in R. The R Journal, 2(2):29-37. URL: http://journal.r-project.org/archive/2010-2/RJournal_2010-2_Solymos.pdf The current release of 'dclone' supports parallel computations via the 'snow' package. Have fun, Peter Peter Solymos Alberta Biodiversity Monitoring Institute and Boreal Avian Modelling project Department of Biological Sciences CW 405, Biological Sciences Bldg University of Alberta Edmonton, Alberta, T6G 2E9, Canada Phone: 780.492.8534 Fax: 780.492.7635 email <- paste("solymos", "ualberta.ca", sep = "@") http://www.abmi.ca http://ww...

...e feedback and support provided by a growing user base. Special thanks to Martyn Plummer for exposing RNG handling in rjags for better integration, and to Khurram Nadeem for catching the most annoying bugs on the test run. Cheers, Peter Peter Solymos Alberta Biodiversity Monitoring Institute and Boreal Avian Modelling project Department of Biological Sciences CW 405, Biological Sciences Bldg University of Alberta Edmonton, Alberta, T6G 2E9, Canada Phone: 780.492.8534 Fax: 780.492.7635 email <- paste("solymos", "ualberta.ca", sep = "@") http://www.abmi.ca http://ww...

...e feedback and support provided by a growing user base. Special thanks to Martyn Plummer for exposing RNG handling in rjags for better integration, and to Khurram Nadeem for catching the most annoying bugs on the test run. Cheers, Peter Peter Solymos Alberta Biodiversity Monitoring Institute and Boreal Avian Modelling project Department of Biological Sciences CW 405, Biological Sciences Bldg University of Alberta Edmonton, Alberta, T6G 2E9, Canada Phone: 780.492.8534 Fax: 780.492.7635 email <- paste("solymos", "ualberta.ca", sep = "@") http://www.abmi.ca http://ww...

...Zuercherstrasse 111 CH-8903 Birmensdorf, Switzerland Tel +41-44-7392-277 (office) -111(exchange) Fax +41-44-7392-215 (fax) christian.hoffmann at wsl.ch http://www.wsl.ch/staff/christian.hoffmann International Conference 5.-7.6.2006 Ekaterinburg Russia "Climate changes and their impact on boreal and temperate forests" http://ecoinf.uran.ru/conference/

...Zuercherstrasse 111 CH-8903 Birmensdorf, Switzerland Tel +41-44-7392-277 (office) -111(exchange) Fax +41-44-7392-215 (fax) christian.hoffmann at wsl.ch http://www.wsl.ch/staff/christian.hoffmann International Conference 5.-7.6.2006 Ekaterinburg Russia "Climate changes and their impact on boreal and temperate forests" http://ecoinf.uran.ru/conference/

...ioned, the design is unbalanced. But, we get same "invert singular factor" Error using the balanced subset. Can anybody advise? Are we using lmer incorrectly? Or is the new error perhaps telling us that GLMM in 0.8-2 wasn't actually working in some sense? Best regards Steve Cumming Boreal Ecosystems Research Ltd. 780.432.1589

...Zuercherstrasse 111 CH-8903 Birmensdorf, Switzerland Tel +41-44-7392-277 (office) -111(exchange) Fax +41-44-7392-215 (fax) christian.hoffmann at wsl.ch http://www.wsl.ch/staff/christian.hoffmann International Conference 5.-7.6.2006 Ekaterinburg Russia "Climate changes and their impact on boreal and temperate forests" http://ecoinf.uran.ru/conference/