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Thanks in advance. I have a vector of numbers which contain sections that are sequences which increase by a value of 1 followed by a gap in the data and then another sequence occurs, etc: x<-c(1:3, 6: 7, 10:13) From the vector I need to extract 2 items of information A) the first number in the sequence (e.g., 1, 6, 10) and B) how many observations were in each sequence section (e.g., 3,

I've been using strata(sampling) and found that if the dataframe to be sampled ("data") consists of repeated measures that are not sorted in order the run will fail on a given stratum. Ordering the dataframe prior to using strata() eliminates this problem. Thanks, Eric -- Eric Vander Wal Ph.D. Candidate University of Saskatchewan, Department of Biology, 112 Science Place,

I have been quantreg library for a number of projects but have just hit a snag. I am using nlrq to examine an asymptotic relationship between 2 variables at the 99th percentile. It performs as expected, however when I try to extract the coefficients along with se and significance I am running into problems. The problem is that for the nlrq regression Dat.nlrq, summary(Dat.nlrq) reports a different

CRAN (and crantastic) updates this week New packages ------------ * Bergm (1.0) Alberto Caimo http://crantastic.org/packages/Bergm Functions implementing Bayesian estimation for exponential random graph models via exchange algorithm Updated packages ---------------- lmtest (0.9-26), logcondens (1.3.5), MTSKNN (0.0-4), pmml (1.2.21), r2lUniv (0.9.4), rattle (2.5.11), rgdal (0.6-23),

...sage: package 'picante' was built under R version 2.10.0 Error in library(picante) : .First.lib failed for 'picante' What could I do to run picante in mac R version? ------------------------------ Message: 133 Date: Wed, 08 Jul 2009 19:19:23 -0600 From: Eric Vander Wal <eric.vanderwal@usask.ca> Subject: [R] Sampling a dataframe based on the length of a subset of     observations within To: r-help@r-project.org Message-ID: <4A55459B.6000709@usask.ca> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Thank you in advance for your consideration. I have a data...

Thank you in advance for your consideration. I have a dataframe of 2000+ observations with repeated measures across approximately 300 unique individuals An event either does or does not happen (1,0) and there is a suit of independent variables associated with the event. A simplified representation follows:

Hello, and thanks in advance. I have a data.frame from which I want to count observations that occur on each day and determine the mean and std.error of said counts. For instance: x<-split(my.df, my.df$julian.days) Although I'm still in my R learning infancy I am under the impression that x is a list of data.frames subsetting my.df by group (i.e.,julian.day) where day 1:366 are