I am working on the r panel package. Now if i have a function that uses a
radiogroup button, and if i attempt to run the function from inside the
rpanel menu, i get this error:
Error in panel$intname : $ operator is invalid for atomic vectors
However if i run the function per se i.e. not from inside the rpanel
menu, but by calling it independently, the above error doesn't appear.
Here is a simple example. Try running the whole code versus just
running the add() function. The former results in the above error and
the latter doesn't.
install.packages(c("rpanel","tkrplot"))
my.menu <- function(panel) {
library(rpanel,tkrplot)
if (panel$menu=="Add"){
add()
}
else
panel
}
main.panel <- rp.control(title = "Main Menu",size=c(200,150))
rp.menu(panel = main.panel, var = menu,
labels = list(list("Addition", "Add")),
action = my.menu)
# function to do adddition
add <- function(){
my.draw <- function(panel) {
if(panel$vals=="numbers"){
val<-as.numeric(panel$nmbr1)+as.numeric(panel$nmbr2)
}
else if(panel$vals=="strings"){
val <- paste(as.character(panel$nmbr1), "and" ,as.character(panel$nmbr2))
}
plot(1:10, 1:10, type="n", xlab="", ylab="",
axes=FALSE, frame = TRUE)
text(5, 5, paste("Result: ", val),cex=1.4)
panel
}
my.redraw <- function(panel) {
rp.tkrreplot(panel, my.tkrplot)
panel
}
my.panel <- rp.control(title = "Addition")
rp.textentry(panel = my.panel, var = nmbr1,
labels = "First: ", action = my.redraw, initval="100")
rp.textentry(panel = my.panel, var = nmbr2,
labels = "Second:", action = my.redraw, initval="200")
rp.radiogroup(panel = my.panel, var = vals,
values = c("numbers", "strings"),
action = my.redraw, title = "Type")
rp.tkrplot(panel = my.panel, name = my.tkrplot, plotfun = my.draw)
}
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
