similar to: Command-line editing & history

I have an environment variable `$R_HISTFILE` pointing to `/home/my.username/.RHistory` and the following code in my `.Rprofile` in my home directory: .Last <- function() { if (!any(commandArgs()=='--no-readline') && interactive()){ require(utils) try(savehistory(Sys.getenv("R_HISTFILE"))) } }

Thanks-- as Duncan Murdoch also noted, R_HISTFILE can be used to solve my problem, as below. BTW it's not easy to find out about R_HISTFILE in the help system or manuals, though, unless you already know it exists-- it only seems to be described under startup options, not things to do with history. However, Duncan's reply did hint at an inconsistency, in that savehistory() defaults to

# # r-bugs@r-project.org # ###################################################### Because I work in different directories, but always want to save my .Rhistory in the same place, I have changed the system function savehistory to this: function (file = "D:/R50/.Rhistory") invisible(.Internal(savehistory(file))) When I use q() to quit R, and it asks me whether I want to

Hi WizaRds, In MATLAB you can do x=1:10 and then specify x(2:end) to get 2 3 4 5 6 7 8 9 10 or whatever (note that in MATLAB the parenthetic index notation is used, not brackets as in R). The point is that 'end' allows you to refer to the final index point of the array. Obviously there isn't much gain in syntax when the variable name is x, but when it's something like

I have very large csv files (up to 1GB each of ASCII text). I'd like to be able to read them directly in to R. The problem I am having is with the variable length of the data in each record. Here's a (simplified) example: $ cat foo.csv Name,Start Month,Data Foo,10,-0.5615,2.3065,0.1589,-0.3649,1.5955

Hi, I run the following command and try to save the commands that have been run in the script. But it seems that no history is recorded. Is it because that the history is not recorded in Rscript? Regards, Peng $ Rscript savehistory.R > f=tempfile() > f [1] "/tmp/Rtmp7WBjGG/file327b23c6" > history() Error in savehistory(file) : no history available to save Calls: history ->

Hi, I have a question regarding the R command options under Linux Is there any options that I can save history only? The only save option is --save, which saves both data and history. I don't want to save temporary data, because sometimes the it takes much time if the temp data is too big. However I want to restore the history for my next R session.. If there is no such option that meets my

Hi, > history() gives Error in savehistory(file) : no history available to save although I can scroll throu history with C^uparrow an C^downarrow. How can I make history() work and/or show the current history in a file, so that I can choose from previous commands? The web did not throw up anything useful. TIA --Christian -- Christian W. Hoffmann, CH - 8915 Hausen am Albis,

Hi, I'm completely new to Wine (I'm running version 0.9.9 under Ubuntu 6.06). I have been able to install and run Windows apps and I can see that Wine really rocks! For speed, I'd rather run Wine than VMware, especially when it comes to running MATLAB under linux. I'm having difficulty with getting MATLAB (6.5.0.180913a (R13)) to run. There are several threads in the Wine

Hi WizaRds, What is the "standard" way to get the day of the week from a date such as as.Date("2006-12-01")? It looks like fCalendar has some functions but this requires a change in the R locale to GMT. Is there another way? Thanks! Jack. --------------------------------- Be a PS3 game guru. [[alternative HTML version deleted]]

But that doesn't put the result into the history buffer, to be written to a file only later when I savehistory(filename). Bert Gunter also suggested ?capture.output and ?textConnection, but I cannot see how to get text into the history buffer as comments, but with evaluated expressions (values). I know how to use paste, sink, write, etc. but nothing that I can see inserts into the history

In Centos 5.3, a bad problem has surfaced in user land. We want to use either Evince or Adobe acroread as the pdf view, but the update of kdegraphics has somehow screwed up these systems so that the odious, horrible, awful pdf viewer kghostview is used. It is what you get when you doubleclick on pdf files, it is what programs get when they try to use xdg-open framework. This happens even though

Dear R-Helpers, I'm fiddling with my .Rprofile in Windows XP & R 2.7.0 Beta. I prefer to manually save my workspace but automatically save my command history via the .Rprofile. That is working fine once I found that "utils::" was required before the loadhistory & savehistory functions. What I would like to do is add a separator line with a date between the histories of each

Hi All, I'm looking for some hints on idiomatic R usage using 'lapply' or similar. What follows is a simple example from which to generalize my question... # Suppose, in this simple example, I want to plot a number of different lines in different colors; # I define the colors I wish to use and I plot them in a loop: d<-

Full_Name: Russell Senior Version: 0.64.0 OS: linux-2.2.x Submission from: (NULL) (198.107.133.11) It appears that the GNU readline history size is limited to 50 entries. This is apparently occurring because R is not bothering to override the readline default value (from readline-4.0): ./history.c:59:#define DEFAULT_HISTORY_GROW_SIZE 50 It appears that it ought to be possible to override

Hi, I upgraded to version 1.2.1 and now the up/down arrows for recalling commands no longer works. Is there a work around for this? > version _ platform sparc-sun-solaris2.7 arch sparc os solaris2.7 system sparc, solaris2.7 status major 1 minor 2.1 year

Hi, Obviously history() will only work with readline installed: so far I have not been able to find working advice for installing and enabling readline on MacOSX. > sessionInfo() R version 2.15.1 (2012-06-22) Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit) locale: [1] C attached base packages: [1] tools tcltk stats4 splines parallel datasets compiler [8] graphics

Hi, Sometimes I need to consult the history of commands that are matching a regex, so I modified the utils::history function for that purpose. I found it useful. I append the code ( I only added the two lines with #**) Romain. history2 <- function (pattern="", max.show = 25, reverse = FALSE, unique = pattern!="", ...) { file1 <- tempfile("Rrawhist")

I have compiled R under Solaris 7 (SunOS 5.7) with the readline-4.0 library linked. Command line editing appears to work, but I cannot access command history. If I execute several commands in R, then type "history()", I get the error message "Error in savehistory(file) : no history available to save". Also, previous command recall (C-p) does not seem to work. I am invoking

Hi Everyone, I am a beginner running R 2.9.2 under Ubuntu and typically use Emacs w/ESS. However, I am confused with history() command. When I issue command history() in Emacs within an R session, this is what get: > history() Error in savehistory(file) : no history available to save Similarly, history(max=10) command gives the same error message. However, there is this In/Out Menu in the