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Wolfgang Huber

2010-Feb-12 17:50 UTC

[Rd] Unexpected behaviour of x[i] when i is a matrix, on Windows

Hi,

when running the following on different instances of R (Linux and 
Windows), I get different results. The one for Linux seems to be the 
intended / documented one. When using numeric indices rather than 
characters, Windows seemed to behave as expected.

-----------On Windows--------------

x = matrix(FALSE, nrow=3, ncol=3)
colnames(x) = LETTERS[1:3]
rownames(x) = letters[1:3]
x

#       A     B     C
# a FALSE FALSE FALSE
# b FALSE FALSE FALSE
# c FALSE FALSE FALSE

x [ cbind("b", "B") ] = TRUE
x
                                                           b     B
# FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE  TRUE  TRUE

sessionInfo()

R version 2.10.0 (2009-10-26)
i386-pc-mingw32

locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United States.1252

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base


-----------On Linux--------------
x = matrix(FALSE, nrow=3, ncol=3)
colnames(x) = LETTERS[1:3]
rownames(x) = letters[1:3]
x
#       A     B     C
# a FALSE FALSE FALSE
# b FALSE FALSE FALSE
# c FALSE FALSE FALSE
x [ cbind("b", "B") ] = TRUE
x
#       A     B     C
# a FALSE FALSE FALSE
# b FALSE  TRUE FALSE
# c FALSE FALSE FALSE

 > sessionInfo()
R version 2.11.0 Under development (unstable) (2010-02-12 r51125)
x86_64-unknown-linux-gnu

locale:
  [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
  [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
  [5] LC_MONETARY=C              LC_MESSAGES=en_US.UTF-8
  [7] LC_PAPER=en_US.UTF-8       LC_NAME=C
  [9] LC_ADDRESS=C               LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] stats     graphics  grDevices datasets  utils     methods   base

other attached packages:
[1] fortunes_1.3-7




-- 

Best wishes
      Wolfgang


--
Wolfgang Huber
EMBL
http://www.embl.de/research/units/genome_biology/huber/contact

Peter Ehlers

2010-Feb-12 18:12 UTC

head link

[Rd] Unexpected behaviour of x[i] when i is a matrix, on Windows

You're comparing 2.10.0 on Windows with 2.11.0 on Linux.
Have you tried 2.11.0 on Windows? => same result as on Linux.

  -Peter Ehlers

Wolfgang Huber wrote:> Hi,
> 
> when running the following on different instances of R (Linux and 
> Windows), I get different results. The one for Linux seems to be the 
> intended / documented one. When using numeric indices rather than 
> characters, Windows seemed to behave as expected.
> 
> -----------On Windows--------------
> 
> x = matrix(FALSE, nrow=3, ncol=3)
> colnames(x) = LETTERS[1:3]
> rownames(x) = letters[1:3]
> x
> 
> #       A     B     C
> # a FALSE FALSE FALSE
> # b FALSE FALSE FALSE
> # c FALSE FALSE FALSE
> 
> x [ cbind("b", "B") ] = TRUE
> x
>                                                           b     B
> # FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE  TRUE  TRUE
> 
> sessionInfo()
> 
> R version 2.10.0 (2009-10-26)
> i386-pc-mingw32
> 
> locale:
> [1] LC_COLLATE=English_United States.1252
> [2] LC_CTYPE=English_United States.1252
> [3] LC_MONETARY=English_United States.1252
> [4] LC_NUMERIC=C
> [5] LC_TIME=English_United States.1252
> 
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
> 
> 
> -----------On Linux--------------
> x = matrix(FALSE, nrow=3, ncol=3)
> colnames(x) = LETTERS[1:3]
> rownames(x) = letters[1:3]
> x
> #       A     B     C
> # a FALSE FALSE FALSE
> # b FALSE FALSE FALSE
> # c FALSE FALSE FALSE
> x [ cbind("b", "B") ] = TRUE
> x
> #       A     B     C
> # a FALSE FALSE FALSE
> # b FALSE  TRUE FALSE
> # c FALSE FALSE FALSE
> 
>  > sessionInfo()
> R version 2.11.0 Under development (unstable) (2010-02-12 r51125)
> x86_64-unknown-linux-gnu
> 
> locale:
>  [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
>  [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
>  [5] LC_MONETARY=C              LC_MESSAGES=en_US.UTF-8
>  [7] LC_PAPER=en_US.UTF-8       LC_NAME=C
>  [9] LC_ADDRESS=C               LC_TELEPHONE=C
> [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
> 
> attached base packages:
> [1] stats     graphics  grDevices datasets  utils     methods   base
> 
> other attached packages:
> [1] fortunes_1.3-7
> 
> 
> 
> 
-- 
Peter Ehlers
University of Calgary

Simon Urbanek

2010-Feb-12 18:15 UTC

head link

[Rd] Unexpected behaviour of x[i] when i is a matrix, on Windows

On Feb 12, 2010, at 12:50 , Wolfgang Huber wrote:
> Hi,
>
> when running the following on different instances of R (Linux and  
> Windows), I get different results. The one for Linux seems to be the  
> intended / documented one. When using numeric indices rather than  
> characters, Windows seemed to behave as expected.
>
AFAICT this has nothing to do with the platform but with using an  
older R version in Windows that doesn't support it  ...

 From NEWS:

                 CHANGES IN R VERSION 2.11.0
[...]
NEW FEATURES
[...]
     o   n-dimensional arrays with dimension names can now be indexed
         by an n-column character matrix. The indices are matched
         against the dimension names.  NA indices are propagated to the
         result.  Unmatched values and "" are not allowed and result
in
         an error.


Cheers,
Simon


> -----------On Windows--------------
>
> x = matrix(FALSE, nrow=3, ncol=3)
> colnames(x) = LETTERS[1:3]
> rownames(x) = letters[1:3]
> x
>
> #       A     B     C
> # a FALSE FALSE FALSE
> # b FALSE FALSE FALSE
> # c FALSE FALSE FALSE
>
> x [ cbind("b", "B") ] = TRUE
> x
>                                                          b     B
> # FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE  TRUE  TRUE
>
> sessionInfo()
>
> R version 2.10.0 (2009-10-26)
> i386-pc-mingw32
>
> locale:
> [1] LC_COLLATE=English_United States.1252
> [2] LC_CTYPE=English_United States.1252
> [3] LC_MONETARY=English_United States.1252
> [4] LC_NUMERIC=C
> [5] LC_TIME=English_United States.1252
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
>
> -----------On Linux--------------
> x = matrix(FALSE, nrow=3, ncol=3)
> colnames(x) = LETTERS[1:3]
> rownames(x) = letters[1:3]
> x
> #       A     B     C
> # a FALSE FALSE FALSE
> # b FALSE FALSE FALSE
> # c FALSE FALSE FALSE
> x [ cbind("b", "B") ] = TRUE
> x
> #       A     B     C
> # a FALSE FALSE FALSE
> # b FALSE  TRUE FALSE
> # c FALSE FALSE FALSE
>
> > sessionInfo()
> R version 2.11.0 Under development (unstable) (2010-02-12 r51125)
> x86_64-unknown-linux-gnu
>
> locale:
> [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
> [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
> [5] LC_MONETARY=C              LC_MESSAGES=en_US.UTF-8
> [7] LC_PAPER=en_US.UTF-8       LC_NAME=C
> [9] LC_ADDRESS=C               LC_TELEPHONE=C
> [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
>
> attached base packages:
> [1] stats     graphics  grDevices datasets  utils     methods   base
>
> other attached packages:
> [1] fortunes_1.3-7
>
>
>
>
> -- 
>
> Best wishes
>     Wolfgang
>
>
> --
> Wolfgang Huber
> EMBL
> http://www.embl.de/research/units/genome_biology/huber/contact
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>
>

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