R-Devel:
When I get the data part of an S4 class that contains="data.frame", it gives
me a list, even when the "data.frame" is the S4 version:
> d<-data.frame(x=1:3)
> isS4(d)
[1] FALSE # of course
> dS4<-new("data.frame",d)
> isS4(dS4)
[1] TRUE
Is there anyway to say R procedures or packages as C code. Ideally, I want
to run a logistic regression in R but have the code available in C, or Java
or whatever. Thoughts?
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On 11/07/2010 1:30 PM, Prof Brian Ripley wrote:
On Sun, 11 Jul 2010, Tony Plate wrote:
Another way of seeing the environments referenced in an object is using
str(), e.g.:
f1 <- function() {
+ junk <- rnorm(1000)
+ x <- 1:3
+ y <- rnorm(3)
+ lm(y ~ x)
+ }
v1 <- f1()
object.size(f1)
16
While linking to package shared libs is not possible in general, as Simon
point out, it is
possible under Windows, provided Windows knows how to find the library
linked to
at runtime (this requires a customized Makefile.win). One way this is done
under
Windows is simply to place the package/libs di
On Sun, 11 Jul 2010, Tony Plate wrote:
Another way of seeing the environments referenced in an object is using
str(), e.g.:
f1 <- function() {
+ junk <- rnorm(1000)
+ x <- 1:3
+ y <- rnorm(3)
+ lm(y ~ x)
+ }
v1 <- f1()
object.size(f1)
1636 bytes
grep("Environment", capture.output(str(
Another way of seeing the environments referenced in an object is using
str(), e.g.:
> f1 <- function() {
+ junk <- rnorm(1000)
+ x <- 1:3
+ y <- rnorm(3)
+ lm(y ~ x)
+ }
> v1 <- f1()
> object.size(f1)
1636 bytes
> grep("Environment", capture.output(str(v1)), value=TRUE)
[1] " .. ..- attr(*
If I omit the \alias{houseprices} from the second line of a data
documentation file houseprices.Rd, R CMD check gives the warning message:
"
Undocumented code objects:
houseprices
All user-level objects in a package should have documentation entries.
See the chapter 'Writing R documentation files
