[R] extracting groups from hclust() for a very large matrix

-- Christopher R. Dolanc Post-doctoral Researcher University of Montana and UC-Davis __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html

[R] summing and combining rows

removed. I actually do have other size classes that I want to leave alone, but combine 3 and 4, so if I could figure out how to do this by creating a new class, that would be preferable. I've also attached a more detailed sample of data. Thanks, Chris Dolanc -- Christopher R. Dolanc Post-doctoral

[R] Improper coding for an offset in vglm()?

may have on possible solutions. Chris -- Christopher R. Dolanc Post-doctoral Researcher University of Montana and UC-Davis DataPlotStems AreaDensity FIA 8.87E+121 665.010315.03736 FIA 2.51E+132 672.45 29.74199 FIA 8.94E+123

Re: [R] count() function

gives a nicer looking printout, but table's output is easier to use in a program. Bill Dunlap Spotfire, TIBCO Software wdunlap tibco.com -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Christopher R. Dolanc Sent: Thursday, April

[R] count() function

Class3 21.17839 12.3487600 1461.30895 But, instead of sum(Density), I'd really like counts of Density, so that I know the sample size of each group. Any suggestions? -- Christopher R. Dolanc Post-doctoral Researcher University of California, Davis

[R] means, SD's and tapply

] NA Warning message: In mean.default(stems353ABCO1) : argument is not numeric or logical: returning NA Thanks, Chris Dolanc -- Christopher R. Dolanc PhD Candidate Ecology Graduate Group University of California, Davis Lab Phone: (530) 752-2644 (Barbour lab) [[alternative HTML

[R] Grouping by factors in R

(Time | SizeClass, Species) : | not meaningful for factors I'd appreciate any help. Thanks. -- Christopher R. Dolanc PhD Candidate Ecology Graduate Group University of California, Davis Lab Phone: (530) 752-2644 (Barbour lab)un __ R-help@r-project.org

Re: [R] Grouping by factors in R

mlist by using ldply() with a suitable extraction function or by use of the do.call/lapply combination. All of this is untested since no minimal example was provided per instructions in the Posting Guide... HTH, Dennis On Tue, Feb 8, 2011 at 11:54 AM, Christopher R. Dolanc crdol