John Chambers j...@r-project.org
on Sun, 24 Jul 2011 14:58:23 -0700 writes:
A point that has come up a couple of times with the new
test is that two classes from two packages may be the
same class. Should that turn on duplicate classes?
One situation where the answer
Prof Brian Ripley wrote:
The message is from maptools (as it says), not sp.
Thank you very much prof. Ripley for pointing out my error.
No, there is nothing you can do when dependent packages put out
messages. You could ask the maintainer not to put the message out when
rgeos is
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I recently suggested to someone (
http://stackoverflow.com/questions/6789055/r-inconsistency-why-add-t-sometimes-works-and-sometimes-not-in-the-plot-functi/6789098#6789098
) that the should use methods(plot) or methods(class=function) to
locate the
Gabriel Becker writes:
AFAIK R does not automatically copy function arguments. R actually tries
very hard to avoid copying while maintaining pass by value functionality.
... R only copies data when you modify an object, not
when you simply pass it to a function.
This is a bit
Also consider subsetting:
cat(a: ); print(system.time( { A - matrix(c(1.0,1.1),5,1000); 0 } ))
cat(h: ); print(system.time( { sum(A[1:5,1:1000]) } ))
cat(i: ); print(system.time( { sum(A[]) } ))
cat(j: ); print(system.time( { sum(A) } ))
In contrast with Python's NumPy array, the R array
On Tue, Jul 19, 2011 at 8:13 AM, jeroen00ms jeroen.o...@stat.ucla.edu wrote:
I am working on a reproducible computing platform for which I would like to
be able to _exactly_ reproduce an R object. However, I am experiencing
unexpected randomness in some calculations. I have a hard time finding
On 25.07.2011 17:45, Ben Bolker wrote:
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I recently suggested to someone (
http://stackoverflow.com/questions/6789055/r-inconsistency-why-add-t-sometimes-works-and-sometimes-not-in-the-plot-functi/6789098#6789098
) that the should use
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On 07/25/2011 12:55 PM, Uwe Ligges wrote:
On 25.07.2011 17:45, Ben Bolker wrote:
I recently suggested to someone (
Hi, everybody
I'm setting up a new CRAN mirror and filled up the disk space the
server allotted me. I asked for more, then filled that up. Now the
system administrators want me to buy an $800 fiber channel card and a
storage device. I'm going to do that, but it does make want to
suggest to you
Use tracemem() instead, i.e.
A - matrix(c(1.0,1.1), nrow=5, ncol=10);
tracemem(A);
[1] 0x047ab170
A[1,1] - 7;
B - sqrt(A);
tracemem[0x047ab170 - 0x0552f338]:
A[1,1] - 7;
B - t(A);
A[1,1] - 7;
tracemem[0x047ab170 - 0x057ba588]:
A[1,1] - 7;
A[1,1] -
On 7/25/11 12:07 AM, Martin Maechler wrote:
John Chambersj...@r-project.org
on Sun, 24 Jul 2011 14:58:23 -0700 writes:
A point that has come up a couple of times with the new
test is that two classes from two packages may be the
same class. Should that turn on
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