Displaying 20 results from an estimated 5000 matches similar to: "save/load hooks"
1999 Nov 05
1
"break" breaks _outer_ loop -- ugh!
It appears that "break" will break from the outermost enclosing loop not
the innermost loop. Is it a bug or language feature?
Tim
--
Timothy H. Keitt
National Center for Ecological Analysis and Synthesis
735 State Street, Suite 300, Santa Barbara, CA 93101
Phone: 805-892-2519, FAX: 805-892-2510
http://www.nceas.ucsb.edu/~keitt/
2000 Feb 01
1
Install problems with RPgSQL
If you have had problems with the latest configure script in RPgSQL,
please try the version attached to this message. Let me know if you
have any problems. Thanks.
Tim
--
Timothy H. Keitt
National Center for Ecological Analysis and Synthesis
735 State Street, Suite 300, Santa Barbara, CA 93101
Phone: 805-892-2519, FAX: 805-892-2510
http://www.nceas.ucsb.edu/~keitt/
-------------- next part
2000 Feb 01
1
Install problems with RPgSQL
If you have had problems with the latest configure script in RPgSQL,
please try the version attached to this message. Let me know if you
have any problems. Thanks.
Tim
--
Timothy H. Keitt
National Center for Ecological Analysis and Synthesis
735 State Street, Suite 300, Santa Barbara, CA 93101
Phone: 805-892-2519, FAX: 805-892-2510
http://www.nceas.ucsb.edu/~keitt/
-------------- next part
2000 Feb 01
1
INSTALL script
The current INSTALL script calls ./configure if it exists when
installing packages, but does not check the return value from
configure. I have my configure script abort under certain conditions
and it would be nice if the INSTALL script would stop at that point.
Also, is there an autoconf macro for testing for gnu make?
Tim
--
Timothy H. Keitt
National Center for Ecological Analysis and
1999 Nov 13
1
postgresql package for R
A preliminary release of my postgres package for R is at
http://www.nceas.ucsb.edu/~keitt/R/postgres.tgz
It allows one to read and write data frames to and from a postgres
database, execute queries and has an experimental "proxy" interface that
allows you to access postgres tables using the standard, local data
frame model. All accesses to the data frame generate the appropriate
1999 Nov 13
1
postgresql package for R
A preliminary release of my postgres package for R is at
http://www.nceas.ucsb.edu/~keitt/R/postgres.tgz
It allows one to read and write data frames to and from a postgres
database, execute queries and has an experimental "proxy" interface that
allows you to access postgres tables using the standard, local data
frame model. All accesses to the data frame generate the appropriate
2000 Feb 08
1
0.99
Congrats on the new release. The new package management tools are
great!
A couple of quick comments:
1) it might be nice to add an optional "Autoloads:" field to the
description (the package does not depend on these other packages, but
will autoload them if certain functions are called).
2) on page 3 of the R-exts document, it says to set PKG_* flags in
'Makeconf'; I think
2001 Mar 19
3
generic database access methods
I've been putting together a package that defined generic methods for
database access. The packages is called "Rdbi." It borrows as much as
possible from existing database packages / proposals. I'd like to start
a discussion about the proposed interface. Here's what I've come up
with so far:
#
# Rdbi: connectionMethods.R
#
dbConnect <- function(dbObj, ...)
2004 Feb 25
1
lapack routine dgesdd, error code 1
Hello R-users,
during one of my analyses that involve a SVD, I get the following error
message:
Error in La.svd(x, nu, nv, method) : error code 1 from Lapack routine
dgesdd
With a search on the R web site, I only found references to error codes
17 and 3 for this particular routine. I also found the Lapack web site,
but could not find a list of the possible error messages. If somebody
knows what
2001 Jul 10
1
Object finalization
I see some code in R to attach finalizers to external pointer references
(Register[C]Finalizer). Anyone have an example of how to code the
finalizer? R_RegisterCFinalizer accepts a C function, but I can't see
how to get it to operate on the pointer, since the pointer is not passed
to the function when its called. RegisterFinalizer takes an R closure,
but how is it called from R (tried
1999 Dec 27
1
Anything for fractals ?
Hallo,
I am a newbie to R and desperatley seeking some material about fractal
geometry. I found the great library on wavelet analysis of images and
I'm now also keen on finding a similar package for calculating fractal
parameters for given images.
Does anybody know something about such a package? Every hint is greatly
appreciated!! I searched already the database, but did not find anything
2000 Feb 14
3
More plotting comments
None of this is greatly important but might be a bit useful to someone.
BTW, I have 0.99a installed, it compiled without a problem.
I've discovered most of the plotting facilities including the legend()
function and the various text annotations, this is nice an convenient
and flexible enough to do most things. One thing that I must say is that
the help pages on plot() and plot.default()
2002 Apr 10
1
Layout of Fourier frequencies
I'm doing convolutions in the frequency domain and need to know the
layout of the Fourier modes returned by fft. (This is leading up to a
more involved question about moment generating functions, but I need to
know if I've got this part correct first.)
I think in 1D the pattern is:
0 1 2 3 -2 1 (even)
0 1 2 3 -3 2 1 (odd)
In 2D is it simply (for a square matrix):
0 1 2 -1 (horizontal)
2007 Sep 20
2
Superimposing vector polygons over raster grid in a plot
Hello:
I would like to superimpose vector polygons (state outlines) from a
Shape file on top of a satellite image,
imported into a SpatialGridDataFrame from GEOTIFF via gdal_translate and
readGDAL.
When I plot polygon and point shape files in R, into
SpatialPointDataFrame and SpatialPolygonDataFrame,
the two feature sets line up geographically, so it seems logical that a
SpatialGridDataFrame
2002 Mar 22
1
name spaces?
I'm revisiting the R/S DBI package and was wondering if there is any
plan to implement package name spaces in R/S. I've taken to the habit of
prepending a few characters to function names in packages to avoid
collisions, e.g., dbConnect(). An alternative would be DBI::connect()
(s/::/preferred/) which in some ways I find more pleasing. Not having
thought about it in detail, it seems pretty
2002 Jan 29
3
dimnames usage in ts (PR#1288)
Full_Name: Tim Keitt
Version: 1.4
OS: Linux
Submission from: (NULL) (129.49.19.70)
I think this code in 'ts' is incorrect:
if (is.matrix(data) || is.data.frame(data)) {
nseries <- ncol(data)
ndata <- nrow(data)
dimnames(data) <- list(NULL, names)
}
since
> x <- data.frame(matrix(rnorm(100),ncol=10))
> names(x)
[1] "X1"
2001 Jul 31
1
"internal" keyword
I seem to remember something about an "internal" keyword for R doc
files. How do we use it?
Tim
--
Timothy H. Keitt
Department of Ecology and Evolution
State University of New York at Stony Brook
Stony Brook, New York 11794 USA
Phone: 631-632-1101, FAX: 631-632-7626
http://life.bio.sunysb.edu/ee/keitt/
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2001 Aug 28
1
Suggested change to documentation
Its not clear from the documentation whether one should do
\keyword[key1, key2}
or
\keyword{key1}
\keyword{key2}
in .Rd files. I believe the latter is correct. (At least 'R CMD check'
complains when given the first version.) It would help to make this
explicit in the R extension writing docs.
Tim
--
Timothy H. Keitt
Department of Ecology and Evolution
State University of New
2001 Nov 01
1
migration to common runtime?
I'm curious if any of the core R developers have considered the
possibility of hosting R (v2?) on the parrot common runtime environment.
Perl6 will generate byte-code for parrot, as will some future version of
python. I can imagine both drawbacks and advantages. Some advantages
would be fast byte-code execution and freely mixing perl, python and R
modules. Anyone looked into this?
Tim
2002 Mar 19
1
should lapply preserve attributes?
I have an application where I need to preserve object attributes across
calls to 'lapply'. The current definition is:
lapply <- function (X, FUN, ...)
{
FUN <- match.fun(FUN)
if (!is.list(X))
X <- as.list(X)
rval <- .Internal(lapply(X, FUN))
names(rval) <- names(X)
return(rval)
}
Would it make sense to replace
names(rval) <- names(X)