R help - Feb 2011 - sprintf does not print

Dear all I have an sprintf inside a loop to track changes in variable's
value.

This sprintf statement works if I copy and paste it inside R
sprintf('I did the the %d,%d \n',k,l)

but when this is inside a loop I get no message.

listcounter<-1
for (k in c(1:mmax)){ # 
  for (l in c(1:nmax)){
   
    lst[[listcounter]] <-fun(estimatedsr)
    listcounter<-listcounter+1
    sprintf('I did the the %d,%d \n',k,l)
  }
}


When I paste the code above I never get any message printed. I know that the
loop works. When I kill the execution of the loop the listcounter variable has
value different from the initial one.

What might be the solution to that strange problem?

Best Regards
Alex

Use
cat(sprintf('I did the the %d,%d \n',k,l))
The functions do not print in non interactive mode
Hope it helps
                                 mario
On 16-Feb-11 11:15, Alaios wrote:
> Dear all I have an sprintf inside a loop to track changes in variable's
value.
>
> This sprintf statement works if I copy and paste it inside R
> sprintf('I did the the %d,%d \n',k,l)
>
> but when this is inside a loop I get no message.
>
> listcounter<-1
> for (k in c(1:mmax)){ #
>    for (l in c(1:nmax)){
>
>      lst[[listcounter]]<-fun(estimatedsr)
>      listcounter<-listcounter+1
>      sprintf('I did the the %d,%d \n',k,l)
>    }
> }
>
>
> When I paste the code above I never get any message printed. I know that
the loop works. When I kill the execution of the loop the listcounter variable
has value different from the initial one.
>
> What might be the solution to that strange problem?
>
> Best Regards
> Alex
>
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-- 
Ing. Mario Valle
Data Analysis and Visualization Group            | http://www.cscs.ch/~mvalle
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