[R] apologies if you aready received this ?

Duncan Murdoch murdoch at stats.uwo.ca
Thu Jun 8 19:35:40 CEST 2006

On 6/8/2006 12:47 PM, markleeds at verizon.net wrote:
> I am accessing my email account remotely so it
> seems to be acting strangely so I am not sure
> if this R question was received. I apologize if it was
> and thanks for any help you can provide.
> -----------------------------------------------------------------
> Hi Everyone : As I mentioned earlier, I am taking a lot
> of Splus code and turning into R and I've run into
> another stumbling block that I have not been
> able to figure out.
> I did plotting in a loop when I was using Splus on unix
> and the way I made the plots stop so I could
> lookat them as they got plotted ( there are hundreds
> if not thousands getting plotted sequentially ) 
> on the screen was by using the unix() command.
> Basically, I wrote a function called wait()
> wait<-function()
> {
> cat("press return to continue")
> unix("read stuff")
> }

You can also use par(ask=TRUE) to get R to pause the script whenever it 
is about to erase the graphics window.

Duncan Murdoch

> and this worked nicely because I then
> did source("program name") at the Splus prompt and
> a plot was created on the screen  and then
> the wait() function was right under the plotting code
> in the program so that you had to hit the return key to go to the next plot.
> I am trying to do the equivalent on R 2.20/windows XP
> I did a ?unix in R and it came back with system() and
> said unix was deprecated so I replaced unix("read stuff") with system("read stuff") but all i get is a warning "read not found" and
> it flies through the successive plots and i can't see them.
> Thanks for any help on this. It's much appreciated.
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