Please do your homework before posing invalid bug reports --
apparently the mirror you're using is not currently working - so just
pick another one. Also "Other Directory URL" is NOT for repositories
as the name implies (ever wondered why there is a "Other Repository"
entry?).
Thanks,
S
Full_Name: Galen papkov
Version: 2.8.0
OS: Tiger v.10.4.11
Submission from: (NULL) (129.7.91.106)
The Package Installer cannot seem to find the CRAN source. When I try to "Get
List", I get the following error:
Error in read.dcf(file = tmpf) :
Found continuation line starting 'http://cran
S+, now and as far back as 3.4 (1996) and S versions 3 (c. 1990)
and 4 (1999) define is.matrix as
function(x)length(dim(x)) == 2
so is.matrix(data.frame(x=1:3,y=4:6)) returns TRUE.
It essentially means that you can use 2 subscripts on
the object (it assumes that the dim() method for class(x)
is
Full_Name: Patrick Bolliger
Version: R 2.8.0
OS: Windows XP
Submission from: (NULL) (165.222.185.132)
I cannot understand the behaviour of the following snippet... I guess it has to
do with the representation of the floating number .6
--
Full_Name: Jerry W. Lewis
Version: 2.8.0
OS: Windows XP Professional
Submission from: (NULL) (71.184.139.210)
On p.1202 of the Reference manual, calculating erf(x) is given as an example
using the code
erf <- function(x) 2 * pnorm(x * sqrt(2)) - 1
A numerically better (avoiding cancellation for
platform i686-pc-linux-gnu
arch i686
os linux-gnu
system i686, linux-gnu
status
major 2
minor 8.0
On Tue, Nov 11, 2008 at 1:58 PM, Wacek Kusnierczyk
<[EMAIL PROTECTED]> wrote:
> hadley wickham wrote:
>> On Tue, Nov 11, 2008 at 1:42 PM, Wacek Kusnierczyk
>> <[EMAIL PROTECTED]> wrote:
>>
>>> hadley wickham wrote:
>>>
> | is.matrix| returns |TRUE| if |x| is a matrix and has a |dim |
> att
Wacek Kusnierczyk wrote:
> hadley wickham wrote:
>
>>> | is.matrix| returns |TRUE| if |x| is a matrix and has a |dim |
>>> attribute of length 2) and |FALSE| otherwise
>>>
>>>
>> That's confusing! In what situations is x a matrix but does not have
>> a dim attribute?
>>
>>
>>
hadley wickham wrote:
> On Tue, Nov 11, 2008 at 1:42 PM, Wacek Kusnierczyk
> <[EMAIL PROTECTED]> wrote:
>
>> hadley wickham wrote:
>>
| is.matrix| returns |TRUE| if |x| is a matrix and has a |dim |
attribute of length 2) and |FALSE| otherwise
>>> That's confusi
Daniel Høyer Iversen wrote:
>> That's confusing! In what situations is x a matrix but does not have
>> a dim attribute?
>>
>
> That was my point. I don't find it logical that
> is.matrix(a) gives FALSE but
> is.matrix(t( t(a) )) gives TRUE.
>
that's a different story, because t() performs
The point was that c(1, 1, 2) is not a matrix but a vector, two distinct
things in R.
> a <- c(1, 1, 2)
> class(a)
[1] "numeric"
> ta <- t(a)
> class(ta)
[1] "matrix"
> class(t(ta))
[1] "matrix"
The transpose operation is only defined for matrices, so if you insist to
apply it to a vector, it fir
On Tue, Nov 11, 2008 at 1:42 PM, Wacek Kusnierczyk
<[EMAIL PROTECTED]> wrote:
> hadley wickham wrote:
>>> | is.matrix| returns |TRUE| if |x| is a matrix and has a |dim |
>>> attribute of length 2) and |FALSE| otherwise
>>>
>>
>> That's confusing! In what situations is x a matrix but does not have
On Tue, Nov 11, 2008 at 1:35 PM, Daniel Høyer Iversen
<[EMAIL PROTECTED]> wrote:
>> That's confusing! In what situations is x a matrix but does not have
>> a dim attribute?
>
> That was my point. I don't find it logical that
> is.matrix(a) gives FALSE but
> is.matrix(t( t(a) )) gives TRUE.
>
> I a
hadley wickham wrote:
>> | is.matrix| returns |TRUE| if |x| is a matrix and has a |dim |
>> attribute of length 2) and |FALSE| otherwise
>>
>
> That's confusing! In what situations is x a matrix but does not have
> a dim attribute?
>
>
x = matrix(1,1,1)
dim(x) = c(1,1,1)
is.matrix(x)
# n
> That's confusing! In what situations is x a matrix but does not have
> a dim attribute?
That was my point. I don't find it logical that
is.matrix(a) gives FALSE but
is.matrix(t( t(a) )) gives TRUE.
I also think it would be more logical that
a=c(1,1,2)
dim(a) gives 3 1 instead of NULL,
Danie
hadley wickham wrote:
| is.matrix| returns |TRUE| if |x| is a matrix and has a |dim |
attribute of length 2) and |FALSE| otherwise
That's confusing! In what situations is x a matrix but does not have
a dim attribute?
Hadley
Yes, I suspect a typo there.
--
O__ Peter Dalgaard
> | is.matrix| returns |TRUE| if |x| is a matrix and has a |dim |
> attribute of length 2) and |FALSE| otherwise
That's confusing! In what situations is x a matrix but does not have
a dim attribute?
Hadley
--
http://had.co.nz/
__
R-devel@r-project.
Daniel Høyer Iversen wrote:
a=c(1,1,2);
is.matrix(a) gives FALSE
is.matrix(t(a)) gives TRUE
is.matrix(t(t(a))) gives TRUE
Is this correct? Shouldn't all give FALSE?
I think is.matrix should give FALSE when dimension is 1*n or n*1.
__
R-devel@r-project
And the other missing piece is that t() coerces the input vector to a
1-column matrix that can then be transposed and returned as a 1-row matrix
(with a dim attribute).
-Christos
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Peter Dalgaard
> Sent
Please review the latest version of 'Writing R Extensions'. What is
documented there has been tested with packages in different libraries,
including none in $(R_HOME)/library.
Note however that on a Unix-alike linking even to
$(R_HOME)/library/firstPkg/libs/firstPkg.so cannot work in general
Daniel Høyer Iversen wrote:
> a=c(1,1,2);
> is.matrix(a) gives FALSE
> is.matrix(t(a)) gives TRUE
> is.matrix(t(t(a))) gives TRUE
>
> Is this correct? Shouldn't all give FALSE?
> I think is.matrix should give FALSE when dimension is 1*n or n*1.
No this is correct. is.matrix() returns TRUE if and
a=c(1,1,2);
is.matrix(a) gives FALSE
is.matrix(t(a)) gives TRUE
is.matrix(t(t(a))) gives TRUE
Is this correct? Shouldn't all give FALSE?
I think is.matrix should give FALSE when dimension is 1*n or n*1.
__
R-devel@r-project.org mailing list
https://stat
Hi,
A package with some C code needs to use the headers and shared library
in another package during installation/compilation. The first one is
achieved through the LinkingTo option in DESCRIPTION. For the second a
Makevars file with
PKG_LIBS=$(R_HOME)/library/firstPkg/libs/firstPkg.so
was being
G'day Brian,
On Mon, 10 Nov 2008 21:07:44 + (GMT)
Prof Brian Ripley <[EMAIL PROTECTED]> wrote:
> 'British' spelling is in the majority amongst R-core, and preferred
> for R documentation (that is in the guidelines somewhere).
I have a vague memory of a discussion that ended with the conclusi
I had not used offline help for many years, and when I tried to yesterday
I found a number of issues (the most important of which is that I couldn't
have R_DVIPSCMD="dvips -Pbdr" to send output to my office printer: the
lack of error reporting is also problematic, and hid the fact that I don't
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