On 12-02-10 12:48 PM, Justin Haynes wrote:
You can add
if(is.na(tab[i])) browser()
or
if(is.na(tab[i])) break
see inline
You can also do this temporarily. Supposing that you used
source("foo.R") to enter a function with that code in it, and you want
the check on line 10, you'd enter
setBreakpoint("foo.R#10", tracer=quote(if(is.na(tab[i])) browser()))
Duncan Murdoch
On Fri, Feb 10, 2012 at 7:22 AM, ikuzar<raz...@hotmail.fr> wrote:
Hi,
I'd like to debug in a loop (using debug() and browser() etc but not
print()
). I'am looking for the first occurence of NA.
For instance:
tab = c(1:300)
tab[250] = NA
len = length(tab)
for (i in 1:len){
if(i != len){
if(is.na(tab[i])) browser()
tab[i] = tab[i]+tab[i+1]
}
}
I do not want to do "Browse[2]> n" for each step ... I'd like to declare a
"browser()" in the loop with a condition. But how to write "stop running
when you encounter NA" ?
Thanks for your help
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