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need help with debug package

2 messages · Tong Wang

Original
Tong Wang
# 
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
Tong Wang
# 
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 <wangtong at usc.edu>
Date: Wednesday, January 3, 2007 9:30 pm
Subject: need help with debug package
To: R help <r-help at stat.math.ethz.ch>