[R-gui] problem with printing a question on R console after plotting with JGR

[Etienne Laliberté]

I'm using the JGR GUI on Ubuntu 9.04. The problem I'm running into is
best illustrated by the following two functions, which in theory
should be equivalent:

useless1 <- function() {
   plot(pressure)
   answer <- readline("do you see the plot?\n")
}

In JGR calling useless1() plots a graph, and at the same time a
question in the R console appears (hence I know what to answer).
However, with the following function:

useless2 <- function() {
   plot(pressure)
   cat("do you see the plot?\n")
   answer <- readLines(n = 1)
}


In JGR the plot appears but I don't see the question on the R console.
Only when I answer (without actually knowing what the question was!)
then the question appears.

This seems to be a problem with the JGR GUI, because I've never had
this problems with the Windows GUI or when running R directly from the
terminal. The problem is that some functions that I use frequently use
a similar approach than useless2() to ask interactive questions after
plotting.

Does anyone have an idea how to solve this problem (besides suggesting
another GUI)?

Many thanks,


--
Etienne Laliberté
================================
Rural Ecology Research Group
School of Forestry
University of Canterbury
Private Bag 4800
Christchurch 8140, New Zealand
Phone: +64 3 366 7001 ext. 8365
Fax: +64 3 364 2124
www.elaliberte.info