I think I have figured out part of the answer, when I entered a debugger, the
calling environment (parent frame)
refers to the debugger program, instead of the mainfun( ). But is there
anyway to solve this problem ?
thanks
----- Original Message -----
From: Tong Wang <[EMAIL PROTECTED]>
Date: Wednesday, January 3, 2007 9:30 pm
Subject: need help with debug package
To: R help <r-help@stat.math.ethz.ch>
> Hi all,
> I met a problem while using the debug package, I have the
> following program:
>
> mainfun<- function(){
> beta<-1
> result<-subfun(beta+x)
> }
>
> subfun<-function(expr){
> y <- eval(expr, envir=list(x=c(1,2)),enclos =
> parent.frame()) return(y)
> }
>
> I have no problem using this program without calling the debug
> package. but once
> I mtrace(subfun), the debugger can't find all the beta after
> entering subfun , and give
> the message : "Error in beta : non-numeric argument to binary
> operator"
> Is there anyway to get around ?
>
> thanks a lot
> happy new year
>
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