search for: miltinho_astronauta

Um texto embutido e sem conjunto de caracteres especificado associado... Nome: n?o dispon?vel Url: https://stat.ethz.ch/pipermail/r-help/attachments/20060617/d28b0fb4/attachment.pl

Hi there, I´m a newbie in R and I´m looking for some advice how to teste Piecewise (Broken Stick) models. I´have another simple question: how can I compute descriptive statistics for data grouped for two or more variables? See below, please. Year Site Repetition rainfall 1980 1 1 ... 1980 1 2 ... 1980 1 3 ... 1980 2

Dear R Gurus, I have a matrix dim(1000x1000) and I need create a second matrix with dim(1002x1002) and insert my first matrix at position col=2,line=2. Please, see an example below: 0050055050 5550000000 5000505005 5005000500 0055550555 and I need 333333333333 300500550503 355500000003 350005050053 350050005003 300555505553 333333333333 Thanks a

Dear R-friends, Unfortunately the tables that I "past" on last email gone with bad visual structure. So I send it again. Sorry to do this so confuse. Miltinho ==== Table1 - Bird records State,SampleSite,Species,Bodysize SaoPaulo,Site1,Spp01,4.39 SaoPaulo,Site1,Spp04,4.05 SaoPaulo,Site1,Spp01,2.75 SaoPaulo,Site1,Spp02,8.18 SaoPaulo,Site1,Spp02,0.80

Dear R-friends, I have to simple questions. First I would like to exclude some columns from a dataframe and after I need select rows that satisfy some conditions. My data frame looks like Region Species Bodysize Weigth Age Africa Sp1 10.2 20 2 Africa Sp2 12.2 12 2 Africa Sp3 15.3 18 3 Africa Sp4 11.5 40 4 Brazil Sp1 10.2 40 3 Brazil Sp2 22.2 32 2 Brazil Sp3 12.3

Dear R-friends I fitted a regression using GLM and plotted fitted values agaist X axis. Now I need plot upper and lower confidence intervals (95%) for this fit. Acoording to ?lm help and can use something like : [ predict.lm(mod, se.fit=T, interval = "confidence", level=.95) ] to estimate confidence intervals. In fact this command run fine, but I can´t plot upper and

Dear R-experts, I have a table with following collumns: State, SamplePlot, Species and BodySize. I sampled bird species at 34 SamplePlots and 5 States (regions) monthly during two years. On each bird record I measured bodysize and identified the species. So I have many records of each species (about 150 species) at each SamplePlot and each Region (State). Now I would like bootstrap