Displaying 20 results from an estimated 136 matches for "radford".
2010 Oct 18
1
make error for R 2.13.0 (and 2.12.0)
...ing to install the released version of 2.12.0. Here is the output
on an Ubuntu Linux system:
begin installing recommended package cluster
* installing *source* package 'cluster' ...
** libs
make[3]: Entering directory `/tmp/RtmpWX7ecF/R.INSTALL2aaf76ad/cluster/src'
gcc -std=gnu99 -I/u/radford/R/R-2.12.0-rel2/include -I/usr/local/include -fpic -g -O2 -c clara.c -o clara.o
g77 -fpic -g -O2 -c daisy.f -o daisy.o
g77 -fpic -g -O2 -c dysta.f -o dysta.o
gcc -std=gnu99 -I/u/radford/R/R-2.12.0-rel2/include -I/usr/local/include -fpic -g -O2 -c fanny.c -o fanny.o
gcc -std=gnu99 -I...
2011 Feb 01
1
dotchart {graphics} 2.11.1 vs. 2.12.1
...> dotchart(race2)
> dotchart(race2, pch=17,col="red")
Each of these worked in 2.11.1 but not in 2.12.1; What changed in the {graphics} package to alter this and is there a work-around?
Isaac T. Van Patten, Ph.D.
Professor of Criminal Justice
307 Adams Street, Office 1A
Box 6934, Radford University
Radford, VA 24142
(540)831-6737
ivanpatt at radford.edu
http://ivanpatt.asp.radford.edu
It doesn't matter how beautiful your theory is;
It doesn't matter how smart you are;
If it doesn't agree with the [data], its wrong.
-Richard Fe...
2008 Aug 28
2
Spider Graph
Is there an R function to generate a radar or spider graph from a table
- e.g. radar(table(x)) or some such?
==================================================
Isaac T. Van Patten, Ph.D.
Professor
Department of Criminal Justice
Box 6934, Radford University
Radford, VA 24142
540-831-6148
ivanpatt@radford.edu <mailto:ivanpatt@radford.edu>
http://ivanpatt.asp.radford.edu <http://ivanpatt.asp.radford.edu>
The hottest places in hell are reserved for those who, in time of great
moral crisis, maintain their neutrality. -...
2015 Aug 21
2
OpenMP problem with 64-bit Rtools
...I can see, there is no 64-bit version of this include file
in the stuff installed with Rtools.
This problem obviously has the potential to affect many packages that
use OpenMP, though simple OpenMP applications may not do anything for
which the incorrect omp.h include file makes a difference.
Radford Neal
2015 Jun 13
2
Lack of protection bug in current R release candidate
...c("a", NA, "b")
factor(x)
factor(x, exclude="")
The solution (kludgy, but the whole concept is kludgy) is to forward
R_print.na_string and R_print.na_string_noquote with the other "roots"
in RunGenCollect (after the comment /* forward all roots */).
Radford Neal
2018 May 03
2
Proposed speedup of ifelse
...functions in a way where it is unclear that
garbage collection time will be fairly attributed. Also, it's a bit
silly to plot the distributions of times, which will mostly reflect
variations in when garbage collections at various levels occur - just
the mean is what is relevant.
Regards,
Radford Neal
2015 Jun 15
1
Lack of protection bug in current R release candidate
...during alpha or beta
> testing phase (or even before).
I'm not sure what you mean to imply here, but for your information,
I reported the bug to r-devel within about an hour of finding
what caused it. (I'd noticed the symptoms a few days before, but
hadn't isolated the cause.)
Radford Neal
2015 Jun 17
1
Add-on argument in sample()
...rrays are (I think) not very common at present.
A bigger gain would come if one also introduced a new sequence operator
that creates a sequence that is marked as a one-dimensional array, which
would be part of a solution to several other problems as well, as I
propose at http://www.cs.utoronto.ca/~radford/ftp/R-lang-ext.pdf
Radford Neal
2016 Sep 09
3
R (development) changes in arith, logic, relop with (0-extent) arrays
> Radford Nea:
> > So it may make more sense to move towards consistency in the
> > permissive direction, rather than the restrictive direction.
>
> > That would mean allowing matrix(1,1,1) < (1:2), and maybe also things
> > like matrix(1,2,2)+(1:8).
>
>...
2015 Jul 14
3
Two bugs showing up mostly on SPARC systems
In testing pqR on Solaris SPARC systems, I have found two bugs that
are also present in recent R Core versions. You can see the bugs and
fixes at the following URLs:
https://github.com/radfordneal/pqR/commit/739a4960a4d8f3a3b20cfc311518369576689f37
https://github.com/radfordneal/pqR/commit/339b7286c7b43dcc6b00e51515772f1d7dce7858
The first bug, in nls, is most likely to occur on a 64-bit big-endian
system, but will occur with low probability on most platforms.
The second bug, in r...
2018 May 08
1
Proposed speedup of ifelse
...;m correct about the
ans[nas] = NA being redundant and we're able to remove that as well.
I'm happy to submit this as a patch and share credit if that is ok with
you. Let me know.
Best,
On Thu, May 3, 2018 at 9:58 PM, Hugh Parsonage <hugh.parsonage at gmail.com>
wrote:
> Thanks Radford. I concur with all your points. I've attempted to address
> the issues you raised through the github.io post. The new method appears
> to be slower for test lengths < 100 and possibly longer lengths (not just <
> 10). Of course length(test) < 100 is very quick, so I simply ad...
2015 Jun 15
0
Lack of protection bug in current R release candidate
>>>>> Radford Neal <radford at cs.toronto.edu>
>>>>> on Sat, 13 Jun 2015 17:24:04 -0400 writes:
> The current R release candidate has a lack of protect bug
> (of very long standing)
[ but not really reported, right ? ]
> with respect to the
> R_print.na_s...
2018 May 04
0
Proposed speedup of ifelse
Thanks Radford. I concur with all your points. I've attempted to address
the issues you raised through the github.io post. The new method appears
to be slower for test lengths < 100 and possibly longer lengths (not just <
10). Of course length(test) < 100 is very quick, so I simply added this to
the...
2017 Mar 19
3
RFC: (in-principle) native unquoting for standard evaluation
...ht then be used by
many)? If the later, it seems undesirable to me.
There is an opportunity cost to grabbing the presently-unused unary @
operator for this, in that it might otherwise be used for some other
extension. For example, see the last five slides in my talk at
http://www.cs.utoronto.ca/~radford/ftp/R-lang-ext.pdf for a different
proposal for a new unary @ operator. I'm not necessarily advocating
that particular use (my ideas in this respect are still undergoing
revisions), but the overall point is that there may well be several
good uses of a unary @ operator (and there aren't ma...
2011 Jul 25
2
Best practices for writing R functions (really copying)
..."); print(system.time( { A[1,1]<-7; 0 } ))
You'll find that the time printed after b:, d:, and g: is near zero,
but that there is non-negligible time for f:. This is because sqrt
is primitive but t is not, so the modification to A after the call
t(A) requires that a copy be made.
Radford Neal
2017 Jun 16
4
[WISH / PATCH] possibility to split string literals across multiple lines
...y thing they wouldn't do that the Python-style
literals would do is allow you to put big blocks of literal text in
your program, without having to put quotes around each line. But
shouldn't such text really be stored in a separate file that gets
read, rather than in the program source?
Radford Neal
2015 Feb 18
3
Recycling memory with a small free list
...bject on
the PROTECT stack, even though no one should actually be looking at
it any more.
In the current version of pqR (see pqR-project.org), modifications are
(often) done in place for statements such as w = w * Q, but not
curretly when the LHS variable does not appear on the RHS.
Regards,
Radford Neal
2016 Sep 12
1
R (development) changes in arith, logic, relop with (0-extent) arrays
...or of course going through the script
trying to find the problem.
This wouldn't be a disaster, but I'm not seeing the magnitude of
benefit that would justify imposing this burden on users. A language
specification shouldn't really be changing all the time for no
particular reason.
Radford Neal
2015 May 13
1
Why is the diag function so slow (for extraction)?
...matrix-like", but aren't actual matrices.
help(c) explicitly says that methods for it are NOT required to
convert matrices to vectors.
So you're advocating slowing down all ordinary uses of diag to
accommodate a usage that nobody thought was important enough to
actually document.
Radford Neal
2015 Jun 18
1
Improving string concatenation
...ral2" and they'll be concatenated. It is only for literals, but
> still very useful.
Concatenation of literal strings could easily be added to the R parser
without changing anything else. (Getting them to deparse as the same
two pieces would be tricky, but is maybe not necessary.)
Radford Neal