[R] Problem with cat() == A related question

[William Revelle]

At 3:45 PM -0400 9/14/10, jim holtman wrote:
>The problem is the 'cat' enclosing the 'print'; just get rid of the
>'cat' -- that is what is causing the extra output
>
>On Tue, Sep 14, 2010 at 3:34 PM, Peng, C <cpeng.usm at gmail.com> wrote:
>>
>>  It is still visible even it is set invisible(NULL):
>>
>>>   fn1 <- function(n = 5){
>>  +  mat <- matrix(rnorm(5*5), 5, 5)
>>  +   cat(print(mat))
>>  +  invisible(NULL)}
>>>  fn1()
>>             [,1]        [,2]       [,3]        [,4]       [,5]
>>  [1,] -1.22767085 -1.41468587 -2.0156231  0.29732942  0.5755600
>>  [2,] -0.16775996 -0.03780596 -0.9461079  0.91289175  0.1254273
>>  [3,]  0.09696032 -0.75522210 -0.7494442 -0.21341669  1.7088194
>>  [4,]  0.13535505 -1.09011005 -0.6074198  0.05342614 -1.1996344
>>  [5,]  0.66474083 -2.62206248  0.1329972  0.06132865  0.5124778
>>  -1.227671 -0.1677600 0.09696032 0.1353550 0.6647408 -1.414686 -0.03780596
>>  -0.7552221 -1.09011 -2.622062 -2.015623 -0.9461079 -0.7494442 -0.6074198
>>  0.1329972 0.2973294 0.9128917 -0.2134167 0.05342614 0.06132865 0.57556
>>  0.1254273 1.708819 -1.199634 0.5124778>
>>>
>>  --
>>  View this message in context: 
>>http://r.789695.n4.nabble.com/Problem-with-cat-tp2538811p2539551.html
>>  Sent from the R help mailing list archive at Nabble.com.
>>


I think that what Peng was trying to do was print it without the 
column and row names

>  mat <-  matrix(1:25,5,5)
>  colnames(mat) <- rownames(mat) <- rep("",5)
>  print(mat)
              
  1  6 11 16 21
  2  7 12 17 22
  3  8 13 18 23
  4  9 14 19 24
  5 10 15 20 25

Bill


>  > ______________________________________________
>>  R-help at r-project.org mailing list
>>  https://stat.ethz.ch/mailman/listinfo/r-help
>>  PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>>  and provide commented, minimal, self-contained, reproducible code.
>>
>
>
>
>--
>Jim Holtman
>Cincinnati, OH
>+1 513 646 9390
>
>What is the problem that you are trying to solve?
>
>______________________________________________
>R-help at r-project.org mailing list
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.