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Dear UseRs, I would like to know the created time and date of specific object. Is there any function for it? Thank you in advance. Sincerely,

Hi, all, Is there a way to analyze data with Stochastic Fronteir Analysis with R? I'd like to know the packages or source code of SFA developed by Jondrow et al. (1982). Cheers,

Hi, You can solve local problem by adding the following lines in ~/.Rprofile .First <- function() { cat("\n Welcome to R!\n\n") Sys.setlocale(category = "LC_ALL", locale = "en_US.UTF-8") } .Last <- function() cat("\n Goodbye!\n\n") HTH...

Dear UseRs, I would like to know the way to create grouped data set such as Oats data.frame in nlme package. Specifically, I need to create a grouped data set with PBIB data.frame in SASmixed package. Any help...

Dear UseRs, I would like to know the way to find classes of each column of data.frame(). Thank you in advance. ========================================================= Dong-hyun Oh Center of Excellence for Science and Innovation Studies Royal Institute or Technology, Sweden e-mail...

Dear UserRs, I draw filled contour plot with filled.contour function. By default, colors of filled.contour is terrain.colors which alters from green (the lowest level) to white (the highest level). I want the colors to alter from white...

Dear useRs, When I executed help.search(), I got nothing other than the following warning message. R> help.search("print") Error in help.search("print") : (converted from warning) removing all entries with invalid multi- byte character data I am using...

Dear UseRs, I would like to know which function is the most efficient in finding convex hull of points in 3(or 2)-dimensional case? Functions for finding convex hull is the following: convex.hull (tripack), chull (grDevices), in.chull...

Dear R users, I run R-2.9.2 on the Snow Leopard 10.6.1 OS system. The default language of the OS is english. I want to plot a very simple graph with Korean letters on a quartz...

Dear expeRt, I would like to know whether a function similar to str_replace() in php exists in R. Looking forward to hearing from you. Best, ========================================================= Center of Excellence for Science and Innovation Studies, Royal Institute of Technology Drottning Kristinas...

Dear useRs, I would like to know the way of deleting NA in list(). Following is a example. lt <- list(a = 1:3, b = NA, c = letters[1:3], d = NA) for(i in length(lt):1) { if(is.na...

Dear UseRs, Let us assume that I have data.frame named as dt. dt is as follows: a b c d 1 3 4 5 2 3 3 2 1 3 4 2 3 2 4 5 4 5 3...

Many thanks. On Jul 1, 2008, at 3:57 PM, Romain Francois wrote: > sapply( iris, class ) > > Dong-hyun Oh wrote: >> Dear UseRs, >> >> I would like to know the way to find classes of each column of >> data.frame(). >> >> Thank you...

Dear expeRt, I occasionally use help.search() function to find appropriate functions in R. Whenever committing help.search() after rerunning R, it takes so much time to find help (around 2 minutes). Is there any way to make it faster...