To: r-help
Cc: Jeff, Matt, Duncan, Hadley [ using Nabble to cc ]
Jeff, Matt,
How about the 'refdata' class in package ref.
Also, Hadley's immutable data.frame in plyr 1.1.
Both allow you to refer to subsets of a data.frame or matrix by reference I
believe, if I understand correctly.
Jeff,
R has 'environments' as a general mechanism to pass around objects by
reference. However, that does not help with most functions like 'apply' which
take arguments other than environments.
I'm familiar with FF and BigMemory, but are there any packages/tricks which
allow for passing
I understand R is a Pass-By-Value language. I have a few practical
questions, however.
I'm dealing with a large dataset (~1GB) and so my understanding of the
nuances of memory usage in R is becoming important.
In an example such as:
d - read.csv(file.csv);
n - apply(d, 1, sum);
must d be
On 19/08/2010 12:57 PM, li...@jdadesign.net wrote:
I understand R is a Pass-By-Value language. I have a few practical
questions, however.
I'm dealing with a large dataset (~1GB) and so my understanding of the
nuances of memory usage in R is becoming important.
In an example such as:
d -
On Thu, 2010-08-19 at 14:27 -0400, Duncan Murdoch wrote:
On 19/08/2010 12:57 PM, li...@jdadesign.net wrote:
I understand R is a Pass-By-Value language. I have a few practical
questions, however.
I'm dealing with a large dataset (~1GB) and so my understanding of the
nuances of memory
5 matches
Mail list logo
