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Printting 'for' and 'while' indices

7 messages · Marcos Sanches, Jeff Gentry, Andy Bunn +4 more

Marcos Sanches
# 
Sorry, I forgot to correct the message subject, so I am resending my
doubt it below:


 Hi all!

 I wrote a very basic program in R, which has some loops ('for' and
'while').  Is there a way to print the 'for' (or while) indice while the
program is running so that I am able to estimate where the program is
and how long it will last?

I mean, I want something like this:

i<-0
While(i<100){
"do a lot of commands"
"print i"
i<-i+1
}

How do I "print" the "i" at each step?

Thanks in advance,

Marcos
Jeff Gentry
# 
print(i)?
Andy Bunn
# 
Try this. Look at ?flsuh.console if you are on windows

HTH, Andy

#~~~~~~~~~~~~~~~~~~~~~~~~
i<-0
while(i<100){
## "do a lot of commands"

##"print i"
cat(i, "\n")

## if using windows
flush.console()

i<-i+1
}
Roger D. Peng
# 
Use cat() or print().

-roger
Marcos Sanches wrote:
Spencer Graves
# 
Consider the following: 

 > i <- 0
 > while(i < 5) {
    "do stuff"
    print(i)
    i <- i + 1
}
[1] 0
[1] 1
[1] 2
[1] 3
[1] 4
 > i <- 0
 > while(i < 5) {
    "do stuff"
    cat(i, "")
    i <- i + 1
}
0 1 2 3 4 > i <- 0
 > while(i < 100) {
    "do stuff"
    if((i %% 10) == 0)
        cat(i, "")
    i <- i + 1
}
0 10 20 30 40 50 60 70 80 90

      This was produced in S-Plus 6.2 under Windows 2000.  For some 
reason, when I copy this code from S-Plus to R1.8.1 via XEmacs, this is 
locking up R for me right now, and I can't figure out why.  However, I 
see no reason why these constructs would not work in R. 

      hope this helps. 
      spencer graves
Marcos Sanches wrote:

            

      
      
      
    

        

      
      
    

  
  


  


      

    

    

      
      

        


  

        

      Ko-Kang Kevin Wang
    

    

      
      #
    

  


  

      
Quoting Marcos Sanches <marcos.sanches at ipsos-opinion.com.br>:

            

      
      
      
    

        
Is
  print(i)
what you want?

Cheers,

Kevin
------------------------------------------------------------
Ko-Kang Kevin Wang
SLC Statistics Workshops Co-ordinator
Student Learning Centre
University of Auckland
New Zealand

-------------------------------------------------
This mail sent through University of Auckland
http://www.auckland.ac.nz/

  
  


  


      

    

    

      
      

        


  

        

      Henrik Bengtsson
    

    

      
      #
    

  


  

      
Hmm, maybe you mean that you've got problems with buffered output when
using Rgui under Windows? If so, turn it off by the "Misc | Buffered
Output (Ctrl+W)" menu item.

Henrik Bengtsson