Clear startup screen in R / RStudio

问题:

I would to change the start up/ logon screen that I get when I first open up R or actually Rstudio. What I would like to have is just the '>' prompt and nothing else.

I know I have seen this on the web before but can't remember what the search phrase was.

I should have added that I am using Ubuntu Linux 10.04!
Any suggestions?

回答1:

You can put this line to .bashrc in your home directory or .zshrc if you use zsh.

alias R='R -q'

-q means quiet.

回答2:

Other guys are giving you advice how to stop the messages, I will take it the other way: how to clear the console. You can press Ctrl-L manually. Of course, it would be nice to do this programmatically and place the appropriate command at the end of your system .RProfile. I tried the obvious solution:

cat("\014") # or cat("\f")

but this apparently doesn't work. You can do this:

cat(rep("\n", 50))

which will clean your console, but the cursor is at the last line. Or you may try the solution proposed here (I've not tested it though - please report if it works if you try it):

cls <- function() {
       require(rcom)
       wsh <- comCreateObject("Wscript.Shell")
       comInvoke(wsh, "SendKeys", "\014")
       invisible(wsh)
} 

On linux console, the following could work:

system("clear")

回答3:

Adding

cat('\f') 

to my .First() function in my .Rprofile works for me. I use Rstudio, (Windows 7, build 7601, Service Pack 1, x86)

回答4:

Create a .Rprofile file that contains: 'cat("\014") # Clear console`

Change "Default working directory ..." in RStudio preferences to the folder that contains .Rprofile.

回答5:

Update: as of November 2016, this now seems to work in RStudio 1.0.44 cat("\014"). This is what I add to the top of my latest R scripts:

rm(list=ls())            # removes all objects from the environment
cat("\014")              # clears the console

credit to @TMS for the solution

Note: it leaves the .Last.value as NULL in the environment, but I'm OK with that

回答6:

There's a function '.First' that gets executed when you enter the console.

.First <- function(){
    cat("\n")
}

This could do it.