Thanks for the helpful comments from others.
The KNOWNHOST variable lists the types of file that are known to work
with the read.sas7bdat function. It's likely that most files written on
Windows platforms will work, even if not listed in KNOWNHOST. If you're
feeling experimental, you might just
I want to connect R with HTML/PHP pages to take input from user,do
some
statistical processing on it show results to HTML page again.
I search on net,i got Rserve package,but examples are mainly for java
langaure not for PHP
i am wondering how to connect it to PHP-Apache-MySQL
Is there
On Wed, 2012-03-28 at 11:40 +0100, Chris Beeley wrote:
I am writing several webpages using the brew package and R2HTML. I would
like to work off one script so I am using nested brew calls. The
documentation for brew states that:
NOTE: brew calls can be nested and rely on placing a function
The chol and solve methods for dpoMatrix (Matrix package) are much
faster than the default methods. But, the time required to coerce a
regular matrix to dpoMatrix swamps the advantage.
Hence, I have the following problem, where use of dpoMatrix is worse
than a regular matrix.
library(Matrix)
x
That's because the number of partitions of 281 items of order 10 is
quite large:
R library('partitions')
R R(10,281)
[1] 1218681472
Without thinking about this too hard, the result of
restrictedparts(281,10) should require around
R 1218681472 * 10 * 4 / 10^9
[1] 48.74726
gigabytes of storage
On Thu, 2012-01-19 at 19:23 -0500, C W wrote:
Thanks, Rich, I will look at the book.
I agree, there are many nice packages, but what if the package changes in a
few years? I would have no idea what is going on! I've heard
from predecessor in the industry who emphasize the learning, not
See this earlier post for SVG logos:
http://tolstoy.newcastle.edu.au/R/e12/devel/10/10/0112.html
Using Image Magick, do something like
convert logo.svg logo.eps
On Thu, 2011-12-01 at 10:56 +0700, Ben Madin wrote:
G'day all,
Sorry if this message has been posted before, but searching for
The contact person is:
Stephania McNeal-Goddard
email: stephania.mcneal-godd...@vanderbilt.edu
phone: (615)322-2768
Vanderbilt University School of Medicine
Department of Biostatistics
S-2323 Medical Center North
Nashville, TN 37232-2158
On Tue, 2011-10-18 at 12:41 -0400, David Winsemius wrote:
Would it be worthwhile to update the read.spss implementation using the
more recent discoveries from the PSPP group? I don't mean to copy their
code; but to use the ideas in their code. Is anyone working on this? I
wouldn't want the effort to be duplicated.
On Thu, 2011-10-13 at 16:22 +0200, Uwe
Erin,
I haven't used Rweb recently. The URL is
http://www.math.montana.edu/Rweb/ . If you have a server, you could set
up the server version of RStudio: http://rstudio.org/download/server .
It worked well when I tried it.
Best,
Matt
On Tue, 2011-09-06 at 17:07 -0500, Erin Hodgess wrote:
On Thu, 2011-09-01 at 17:36 +0100, Prof Brian Ripley wrote:
readBin is intended to read a few items at a time, not 10^9. You are
probably getting 32-bit integer overflow inside your OS, since the
number of bytes you are trying to read in one go exceeds 2GB.
Don't do that: read say a
In order to apply the bootstrap, you must resample, uniformly at random
from the independent units of measurement in your data. Assuming that
these represent the rows of 'data', consider the following:
est - function(y, x, obeta = c(1,1), verbose=FALSE) {
n - length(x)
X - cbind(rep(1,
Ravi,
Consider using an environment (i.e. a 'reference' object) to store the
results, avoiding string manipulation, and the potential for loss of
precision:
fr - function(x, env) { ## Rosenbrock Banana function
x1 - x[1]
x2 - x[2]
f - 100 * (x2 - x1 * x1)^2 + (1 - x1)^2
On Fri, 2011-06-24 at 12:09 -0400, David Winsemius wrote:
On Jun 24, 2011, at 11:27 AM, Matt Shotwell wrote:
Ravi,
Consider using an environment (i.e. a 'reference' object) to store the
results, avoiding string manipulation, and the potential for loss of
precision:
fr - function(x
On Mon, 2011-06-20 at 13:38 +0200, Dominik P.H. Kalisch wrote:
Hi,
I would like to cluster a dataset with the ward algorithm.
I'm assuming that this refers to the agglomerative partitioning method
[1]. That is, the number of clusters is selected according to the data
partition that is
As Mike had written, there are frameworks for web-development with R.
RApache http://www.rapache.net is one. Also, see the R package Rook:
http://cran.r-project.org/web/packages/Rook/index.html .
On Wed, 2011-06-08 at 17:26 +0530, amrita gs wrote:
How can we create HTML forms in R
Wouldn't
On Tue, 2011-06-07 at 16:17 +0200, Uwe Ligges wrote:
On 07.06.2011 11:57, peter dalgaard wrote:
On Jun 6, 2011, at 11:22 , Prof Brian Ripley wrote:
As a further example of the trickiness, the function method of plot()
relies on curve(x, ...) being a request to plot the function x(x)
I think there is trouble because expr in curve(expr) may be the name of
a function, and it's ambiguous whether 'x' should be interpreted as a
mathematical expression involving x, or the name of a function. Here are
some examples that work:
curve(I(x))
curve(1*x)
On Sun, 2011-06-05 at 12:07
On Tue, 2011-05-31 at 15:36 +0200, heimat los wrote:
Hello all,
I am new to R and my question should be trivial. I need to create a word
cloud from a txt file containing the words and their occurrence number. For
that purposes I am using the snippets package [1].
As it can be seen at the
On Tue, 2011-05-31 at 16:19 +0200, heimat los wrote:
On Tue, May 31, 2011 at 4:12 PM, Matt Shotwell m...@biostatmatt.com
wrote:
On Tue, 2011-05-31 at 15:36 +0200, heimat los wrote:
Hello all,
I am new to R and my question should be trivial. I need to
create
You can embed hex escapes in strings (except \x00). The value(s) that
you embed will depend on the character encoding used on you platform. If
this is UTF-8, or some other ASCII compatible encoding, \x20 will work:
foo\x20bar
[1] foo bar
For other locales, you might try charToRaw( ) to see the
be read into
memory, and printed like this:
a\\x20b
That is, not with a space character substituted for \x20. So, now I'm
not sure this is a solution.
On Mon, 2011-04-25 at 12:24 -0500, Matt Shotwell wrote:
You can embed hex escapes in strings (except \x00). The value(s) that
you embed will depend
On 04/21/2011 10:36 AM, Brian Buma wrote:
Hello all-
I have a question related to encoding. I'm using a seperate program which
takes either 16 bit or 8 bit (flat binary files) as inputs (they are raster
satellite imagery and the associated quality files), but can't handle both
at the same
21, 2011 at 9:50 AM, Matt Shotwell
matt.shotw...@vanderbilt.edu mailto:matt.shotw...@vanderbilt.edu wrote:
On 04/21/2011 10:36 AM, Brian Buma wrote:
Hello all-
I have a question related to encoding. I'm using a seperate
program which
takes either 16 bit or 8
On Tue, 2011-04-19 at 03:14 -0400, Duncan Murdoch wrote:
On 11-04-18 9:51 PM, Matt Shotwell wrote:
Does anyone know if there is a simple way to print raw vectors, such
that ASCII characters are printed for bytes in the ASCII range, and
their hex representation otherwise? rawToChar doesn't
Does anyone know if there is a simple way to print raw vectors, such
that ASCII characters are printed for bytes in the ASCII range, and
their hex representation otherwise? rawToChar doesn't work when we have
something like c(0x00, 0x00, 0x44, 0x00).
-Matt
Hi Mike,
There are some facilities for storing and manipulating small (2 bit)
integers. See here:
http://cran.r-project.org/web/packages/ff/index.html
-Matt
On 04/14/2011 01:20 PM, Mike Miller wrote:
I note that current implementations of R use 32-bit integers for
integer vectors, but I am
When a function I have stop()s, I'd like it to return its evaluation
frame, but not halt execution of the script. In experimenting with this,
I became confused with dump.frames. From ?dump.frames:
If ‘dump.frames’ is installed as the error handler, execution will
continue even in
That's an interesting idea. I had written a long email describing a
proof-of-concept, but decided to post is to the website below instead.
http://biostatmatt.com/archives/1184
Matt
On 04/04/2011 07:31 AM, carslaw wrote:
I appreciate that this is OT, but I'd be grateful for pointers to
There is some information about this subtype in the PSPP source code,
and for other subtypes not yet implemented by read.spss. The PSPP source
code indicates that this subtype consists of Value labels for long
strings, which isn't very illuminating to me (probably because I don't
use PSPP, or
Try here:
https://stat.ethz.ch/pipermail/r-help/2003-February/029393.html
On Tue, 2011-03-08 at 20:25 -0500, Shira Rockowitz wrote:
I was wondering if anyone could help me figure out how to make a Venn
diagram in R where the circles are scaled to the size of each dataset. I
have looked at
On 03/08/2011 07:20 AM, Xiaobo Gu wrote:
On Wed, Sep 15, 2010 at 5:05 PM, Uwe Ligges
lig...@statistik.tu-dortmund.de wrote:
See the R Language Definition manual. Since R knows about lazy
evaluation,
it is sometimes neither by reference nor by value.
If you want to think binary, then by value
On Sun, 2011-03-06 at 08:06 -0500, Mike Marchywka wrote:
Date: Thu, 3 Mar 2011 13:04:11 -0600
From: matt.shotw...@vanderbilt.edu
To: r-help@r-project.org
Subject: Re: [R] Developing a web crawler / R webkit or something
similar? [off
On 03/03/2011 08:07 AM, Mike Marchywka wrote:
Date: Thu, 3 Mar 2011 01:22:44 -0800
From: antuj...@gmail.com
To: r-help@r-project.org
Subject: [R] Developing a web crawler
Hi,
I wish to develop a web crawler in R. I have been using the functionalities
available under the RCurl package.
On Mon, Feb 28, 2011 at 8:59 PM, Matt Shotwell m...@biostatmatt.com wrote:
Jim,
If repeated measurements on patients are correlated, then resampling all
measurements independently induces an incorrect sampling distribution
(= incorrect variance) on a statistic of these data. One solution
Jim,
If repeated measurements on patients are correlated, then resampling all
measurements independently induces an incorrect sampling distribution
(= incorrect variance) on a statistic of these data. One solution, as
you mention, is the block or cluster bootstrap, which preserves the
That's interesting. You might also like:
http://en.wikipedia.org/wiki/Von_Mises%E2%80%93Fisher_distribution
I'm not sure how to plot the wireframe sphere, but you can visualize the
points by transforming to Cartesian coordinates like so:
u - runif(1000,0,1)
v - runif(1000,0,1)
theta - 2 * pi * u
Thomas,
I wasn't able to reproduce your finding. The last two characters in my
'out.txt' file were just as expected. But, I'm in an UTF-8 locale. Your
locale affects the encoding of characters on your platform. If you're
not in a UTF-8 locale, then characters are converted from your native
All,
I'd like to automatically output text from R to HTML. In doing this I've
run into trouble with non-ascii characters, as my browser (and
presumably others) does not render such characters correctly. For
example, the 'fancy' single quotes associated with summary.lm are
multi-byte
OK, looks like my web browser does render non-ascii characters output by
R when it's given the encoding explicitly. This works for me: meta
http-equiv=Content-Type content=text/html; charset=UTF-8/. So
that's another solution, but not a general one.
-Matt
On Fri, 2011-02-18 at 12:47 -0600, Matt
On Fri, 2011-02-18 at 19:50 -0500, Duncan Murdoch wrote:
On 18/02/2011 5:58 PM, Matt Shotwell wrote:
OK, looks like my web browser does render non-ascii characters output by
R when it's given the encoding explicitly. This works for me:meta
http-equiv=Content-Type content=text/html
On Thu, 2011-02-10 at 10:44 -0800, David Smith wrote:
The SAS import/export feature of Revolution R Enterprise 4.2 isn't
open-source, so we can't release it in open-source Revolution R
Community, or to CRAN as we do with the ParallelR packages (foreach,
doMC, etc.).
Judging by the language of
There are quite a few packages that work with finite mixtures, as
evidenced by the descriptions here:
http://cran.r-project.org/web/packages/index.html
These might be useful:
http://cran.r-project.org/web/packages/flexmix/index.html
http://cran.r-project.org/web/packages/mclust/index.html
Martyn Plummer's 'coda' package has some nice interactive menus. The
package appears to be written entirely in R. You could start with the
codamenu() function in the package source:
http://cran.r-project.org/web/packages/coda/index.html
-Matt
On Fri, 2011-01-21 at 14:26 +0200, christiaan pauw
Tal,
It looks like the data you received has HTML special hex characters.
That is, '#x5E9;' is just an ASCII HTML representation of a hex
character. It's not encoded in a special manner.
The trick is to substitute the HTML encoded hex character for its binary
representation, or decode the
-statistics.com (English)
--
On Thu, Dec 9, 2010 at 8:38 PM, Matt Shotwell shotw...@musc.edu
wrote:
Tal,
It looks like the data you received has HTML special hex
a look at profdpm, that did not pop-up in my searches.
Indeed, the interpretation is going to be critical... Could you please
elaborate on what you mean by the bootstrap process?
Thanks a lot for your helps,
Martin
On 11/17/2010 3:50 PM, Matt Shotwell wrote:
There are several statistics
Please see below.
On Wed, 2010-11-17 at 04:41 -0500, Ted Harding wrote:
On 17-Nov-10 00:02:39, José Fernando Zea Castro wrote:
Hello.
First, I'm thankful about your wonderful project.
However, I have serious worries about the reliability of R.
I found the next bug which I consider
There are several statistics used to compare nominal classifications, or
_partitions_ of a data set. A partition isn't quite the same in this
context because partitioned data are not restricted to a fixed number of
classes. However, the statistics used to compare partitions should also
work for
Servet,
These data do look linear in log space. Fortunately, the model
log(y) = a + b * log(x)
does have intercept zero in linear space. To see this, consider
log(y) = a + b * log(x)
y = 10^(a + b * log(x))
y = 10^a * 10^(b * log(x))
y = 10^a * 10^(log(x^b))
y = 10^a * x^b
R implements (almost) all IO through its 'connections'. Unfortunately,
there is no API (public or private) for adding connections, and
therefore no packages that implement connections. You will find more
discussion of connections and hardware (serial, USB) interface in the
R-devel list archives.
Have you tried using the 'mai' argument to par()? Something like:
par(mfrow=c(3,3), mai=c(0,0,0,0))
I've used this in conjunction with image() to plot raster data in a
tight grid. http://biostatmatt.com/archives/727
-Matt
On Wed, 2010-11-03 at 11:13 -0400, Neba Funwi-Gabga wrote:
Hello UseRs,
Here is a small function for forest plots in R, with an example:
http://biostatmatt.com/wiki/r-credplot
-Matt
On Sat, 2010-10-30 at 11:40 -0400, Mestat wrote:
Here is one example:
I have three vectors (mean,lower interval, upper interval)
mean-c(2,4,6,8)
l-c(1,2,3,4)
u-c(4,8,12,16)
How
Here's a shorter (but more cryptic) one:
gsub(^([^\\(]+)(\\((.+)\\))?, \\2, tests)
[1] (%) (%) (mg/ml)
gsub(^([^\\(]+)(\\((.+)\\))?, \\3, tests)
[1] % % mg/ml
-Matt
On Wed, 2010-10-13 at 14:34 -0400, Henrique Dallazuanna wrote:
Try this:
You could try pnorm also:
shiftedGaussR - function(x0 = 500) {
sd - 100/sqrt(2)
int - pnorm(0, x0, sd, lower.tail=FALSE, log.p=TRUE)
exp(int + log(sd) + 0.5 * log(2*pi))
}
shiftedGaussR(500)
[1] 177.2454
shiftedGauss(500)
[1] 177.2454
-Matt
On Tue, 2010-09-21 at 09:38 -0400,
I was just reading about the merge sort algorithm last night (BTW, here
is a fun link http://www.youtube.com/watch?v=t8g-iYGHpEA). There are
some interesting similarities in this context. Here's a recursive method
for bisection:
bisectMatt - function(fn, lo, hi, tol = 1e-7, ...) {
flo -
On Thu, 2010-09-16 at 17:30 -0400, Tal Galili wrote:
Hello dear Jaroslaw,
I strongly agree with you that the R foundation should have an easier method
of enabling people to give donations.
At the same time, I feel there is a (friendly) disagreement between us on
how such money should be used.
For the compiled languages, it depends heavily on the compiler. This
sort of comparison is rendered moot by the huge variety of compiler and
hardware specific optimizations. My suggestion is to use C, or possibly
C++ in conjunction with Rcpp, as these are most compatible with R. Also,
C and C++
I have a little package I've been using to write template blog posts (in
HTML) with embedded R code. It's quite small but very flexible and
extensible, and aims to do something similar to Sweave and brew. In
fact, the package is heavily influenced by the brew package, though
implemented quite
Well, the attachment was a dud. Try this:
http://biostatmatt.com/R/markup_0.0.tar.gz
-Matt
On Thu, 2010-09-09 at 10:54 -0400, Matt Shotwell wrote:
I have a little package I've been using to write template blog posts (in
HTML) with embedded R code. It's quite small but very flexible
Have a look at gzcon, for decompressing data as they arrive. From the
help file:
‘gzcon’ provides a modified connection that wraps an existing
connection, and decompresses reads or compresses writes through
that connection. Standard ‘gzip’ headers are assumed.
There is no
If you know the encoding of the string, or if its encoding is the
current locale encoding, then you can use the iconv function to convert
the string to ASCII. Something like:
iconv(accented.string, to=ASCII//TRANSLIT)
While 7-bit ASCII does not permit accented characters, extended (8-bit)
ASCII
to remind anyone interested that R
still has trouble with embedded zeros in character strings. I may be
abusing terminology, but I think that makes R 8-bit dirty.
-Matt
On Tue, 2010-09-07 at 14:01 -0400, David Winsemius wrote:
On Sep 7, 2010, at 1:35 PM, Matt Shotwell wrote:
If you know
Tal,
For your first example, x is not duplicated in memory. If you compile R
with --enable-memory-profiling, you have access to the tracemem()
function, which will report whether x is duplicate()d:
x - rep(1,100)
tracemem(x)
[1] 0x8f71c38
x[10] - NA
This does not result in duplication of x,
Try this:
http://www.stats.ox.ac.uk/~ripley/Win64/W64porting.html
-Matt
On Wed, 2010-09-01 at 07:40 -0400, Hayes, Daniel wrote:
Dear all,
I am working with the an R-package named GAMLSS
(www.gamlss.comhttp://www.gamlss.com) it is currently only functional under
the 32-bit version of R
Or using R GNU tools:
m...@max:~$ R -e fortunes::fortune() | gawk '/^[^]/ {print}'
It's not a question of trying variations, rather of following
instructions.
-- Brian D. Ripley (about using 'Writing R Extensions')
R-help (January 2006)
-Matt
On Wed, 2010-09-01 at 16:49 -0400, Stuart
Here is one:
http://svn.r-project.org/R/trunk/share/texmf/tex/latex/Sweave.sty
-Matt
On Tue, 2010-08-24 at 15:40 -0400, r.ookie wrote:
Does anyone know where I can download the latest version of Sweave.sty? I
have looked all over the site http://www.stat.umn.edu/~charlie/Sweave/ with
no
On Sun, 2010-08-22 at 11:41 -0400, ivo welch wrote:
Dear R Wizards---is it possible to get R to show its current call
stack (sys.calls()) upon an error abort? I don't use ESS for
execution, and it is often not obvious how to locate how I triggered
an error in an R internal function. Seeing
abort?
/iaw
On Sun, Aug 22, 2010 at 11:50 AM, Matt Shotwell shotw...@musc.edu wrote:
On Sun, 2010-08-22 at 11:41 -0400, ivo welch wrote:
Dear R Wizards---is it possible to get R to show its current call
stack (sys.calls()) upon an error abort? I don't use ESS for
execution
$ R
postscript(file=Rfifo)
plot(0)
dev.off()
-Matt
On Wed, 2010-08-18 at 23:21 -0400, Matt Shotwell wrote:
Donald,
At least for the PDF device (I know you asked about png, but I believe
they are similar), the answer no. Ultimately, this device calls the
standard C function fopen
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
Or, if using GNU Linux or other UNIX-like system:
sink(/dev/null)
# Issue commands
sink()
-Matt
On Wed, 2010-08-18 at 09:14 -0400, Gabor Grothendieck wrote:
On Fri, Aug 13, 2010 at 1:52 PM, Marie-Hélène Ouellette
mariehele...@gmail.com wrote:
Dear all,
I was wondering if there is a
Donald,
At least for the PDF device (I know you asked about png, but I believe
they are similar), the answer no. Ultimately, this device calls the
standard C function fopen, and writes its data to the resulting file
stream.
If you're using GNU Linux, you might trick R into writing to a fifo (a
Also, many R functions are designed to operate on R connections, to
input and output text. Alternatively, we may wish to provide the input
text as an R character vector, or output text to a character vector. The
textConnection makes a character vector look like a connection, so R
routines that
nuncio,
If you already have a filter kernel, you can use the filter function. Of
course, convolution filters can be applied directly using the discrete
Fourier transform via the fft function. For an example of filtering
(lowpass) with R, see http://biostatmatt.com/archives/78 , and the
associated
Walt,
Something like:
con - file(your-large-file.txt, rt)
readLines(con, 1) # Read one line
-Matt
On Sun, 2010-08-15 at 10:58 -0400, Data Analytics Corp. wrote:
Hi,
I have an upcoming project that will involve a large text file. I want to
1. read the file into R one line at a time
How about:
rawToChar(as.raw(82))
[1] R
-Matt
On Sun, 2010-08-15 at 19:50 -0400, Orvalho Augusto wrote:
Hello guys!
Is there any function that permits me to get an ASCI character from its
code? Eg. ascifunction(34) would give me '
or ascifunction(92) gives \
Thanks
Caveman
TGS,
Given that you have to pay an outrageous $155.86 for that book, it seems
reasonable to look for a free environment for numerical computing (like
R!). If your instructor says that such a variety of programming
languages would work, you could probably make a good argument to use R.
But why not
There are some book-length documents (downloadable for free) at the
contributed documentation section of the R project website here:
http://cran.r-project.org/other-docs.html
In particular, the book “Practical Regression and Anova using R” by
Julian Faraway looks to have the content you want,
See comments below.
On Mon, 2010-08-09 at 10:22 -0400, JH wrote:
I am wanting to change some lines of code in the R package named nlme
http://cran.r-project.org/web/packages/nlme/index.html
To do this I have downloaded the Package source named nlme_3.1-96.tar.gz,
opened up the file and
Daniel,
If you want to search for each term at the beginning of a sting, using
the regular expression construct '^', you might use the following
search.terms - c(Emil, Meryl)
names - c(Emil Jannings,
+Charles Chaplin,
+Katherine Hepburn,
+Meryl Streep)
Ron,
In arithmetic, '-' and '+' are binary _and_ unary operators. That is,
both -1 and 1-1 are valid arithmetic expressions, the former negates its
argument, and the latter subtracts the second from the first. Since much
of R is designed do arithmetic, R honors the unary _and_ binary versions
of
If I take your meaning correctly, you want something like this.
x - c(0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0,
+ 1)
easy - function(x) {
+ state - 0
+ for (i in 1:length(x)) {
+ if (x[i] == 0)
+ x[i] - state
+ state - 0
+ if (x[i] ==
Alex,
Vignettes are optional supplemental documentation. That is, they are in
addition to the required boilerplate documentation for R functions and
datasets. Vignettes are written in the spirit of sharing knowledge, and
assisting new users in learning the purpose and use of a package.
Maybe
I had addressed a problem similar to this only a few days ago. Please
see the following URL:
http://tolstoy.newcastle.edu.au/R/e11/help/10/07/1677.html
On Fri, 2010-07-23 at 08:45 -0400, nuncio m wrote:
I have the following code to write the output from auto.arima function. The
issue is not
Your code between calls to sink() does not generate any output. Hence,
nothing will be diverted to the file. To illustrate this point,
consider
for(i in 1:10) i
This produces no output. However,
for(i in 1:10) print(i)
produces output as expected.
-Matt
On Fri, 2010-07-16 at 13:34 -0400,
Fahim,
Please see the Writing R Extensions manual
http://cran.r-project.org/doc/manuals/R-exts.pdf
There are simple instructions in this document under the heading System
and foreign language interfaces.
-Matt
On Wed, 2010-07-14 at 01:21 -0400, Fahim Md wrote:
Hi,
I am trying to call a C
On Tue, 2010-07-13 at 01:42 -0400, Hadley Wickham wrote:
strings - replicate(1e5, paste(sample(letters, 100, rep = T), collapse =
))
system.time(strings[-1] == strings[-1e5])
# user system elapsed
# 0.016 0.000 0.017
So it takes ~1/100 of a second to do ~100,000 string
système écoulé
0.002 0.000 0.002
utilisateur système écoulé
0.004 0.000 0.005
utilisateur système écoulé
0.003 0.000 0.003
Romain
Le 13/07/10 15:24, Matt Shotwell a écrit :
On Tue, 2010-07-13 at 01:42 -0400
9, 2010, at 3:21 PM, Matt Shotwell wrote:
Erik,
Can you store the data as a blob? For example:
#create string, compress with gzip, convert to SQLite blob string
string - gzip this string, store as blob in SQLite database
string.gz - memCompress(string, type=gzip)
string.sqlite
Erik,
Can you store the data as a blob? For example:
#create string, compress with gzip, convert to SQLite blob string
string - gzip this string, store as blob in SQLite database
string.gz - memCompress(string, type=gzip)
string.sqlite - paste(x',paste(string.gz,collapse=),',sep=)
#create
I recently wrote a small R function to draw simple ASCII scatterplots.
http://biostatmatt.com/archives/491
Bill Harris commented that the plots reminded him of the dumb terminal
of Gnuplot. I think it would be really neat to have an R graphics driver
to Gnuplot in order to generate more complete
It looks like read.table is reading the first line as a data value,
which is the default for read.table. Try using read.table with the
argument header=TRUE. Also, consider using a box and whiskers plot for
these data (?boxplot, ?lattice::bwplot).
-Matt
On Mon, 2010-07-05 at 12:08 -0400, Ian
How about this?
mbeta - function(...) {
exp(sum(lgamma(c(...)))-lgamma(sum(c(...
}
gamma(5)*gamma(6)*gamma(7)/gamma(18)
[1] 5.829838e-09
mbeta(5,6,7)
[1] 5.829838e-09
On Mon, 2010-07-05 at 17:10 -0400, Gregory Gentlemen wrote:
Dear R-users,
Is there an R function to compute
Suku,
It looks like you might want to consult with a [bio]statistician, but
I'm interested in what these distances represent. Can you give some
additional context for your problem? How were these distances collected?
Is it a collection of pairs of intervals, like this:
P
Suku,
Just to clarify, in your table and each of your images, it appears that
the start position of P (start1) is _after_ or at the start position of
Q (start2), and the end position of P (end1) is _before_ or at the end
position of Q (end2). If these positions represent increasing integers,
Try to flush output after printing:
cat(paste(Sys.time()),\n); flush(stdout())
On Thu, 2010-07-01 at 16:17 -0400, Jack Luo wrote:
Hi,
I am doing some computation which is pretty time consuming, I want R to
display CPU time after each iteration using the command Sys.time(). However,
I found
x - c(5,7,7,9)
rank(unique(x))[match(x, unique(x))]
[1] 1 2 2 3
On Thu, 2010-07-01 at 21:30 -0400, Suresh Singh wrote:
I have not been able to find a way to do dense rank in R
Here is an example of what I need
rank() gives the following
5 rank 1
7 rank 2
7 rank 2
9 *rank 4*
but
Isn't it equally trivial to demonstrate that the product of two pdfs
_may_ be a normalized pdf? For example, the uniform (0,1) pdf:
f(x) = 1 for x in (0, 1), and 0 otherwise
Hence, g(x) = f(x)*f(x) = 1 for x in (0, 1), and 0 otherwise _is_ a
normalized pdf.
But this is a little silly. Rather
Some ideas,
1. Wrap the library as an R package, as you said, and check for the
library at configure time (i.e. with autoconf or custom script). But if
you do, it would be great to provide an R-level API so that we can all
use it. This is the strategy of the 'cairo', 'RGtk', 'rgl', and 'gsl'
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