Displaying 20 results from an estimated 5000 matches similar to: "R] Re: Mandelbrot set and C code --"
2003 Oct 02
0
R] Re: Mandelbrot set and C code --
You need to install the tools needed to build packages from source. You can
read about it in Q3.1 of R for Windows FAQ.
Andy
> -----Original Message-----
> From: Rex Bryan Dell1700 [mailto:rexbryan1 at comcast.net]
> Sent: Thursday, October 02, 2003 12:15 PM
> To: r-help at stat.math.ethz.ch
> Subject: [R] R] Re: Mandelbrot set and C code --
>
>
> Wizards...
>
2010 Sep 24
2
why I could not reproduce the Mandelbrot plot demonstrated on R wiki
I am trying to reproduce the nice looking of Mandelbrot demonstrated by R
wiki page by the following code:
library(caTools) # external package providing write.gif function
jet.colors = colorRampPalette(c("#00007F", "blue", "#007FFF", "cyan",
"#7FFF7F",
"yellow", "#FF7F00",
2005 Oct 04
6
Animation of Mandelbrot Set
Hi,
I was playing with Mandelbrot sets and come up with the following code, I
thought I would share:
library(fields) # for tim.colors
library(caTools) # for write.gif
m = 400 # grid size
C = complex( real=rep(seq(-1.8,0.6, length.out=m), each=m ),
imag=rep(seq(-1.2,1.2, length.out=m), m ) )
C = matrix(C,m,m)
Z = 0
X = array(0, c(m,m,20))
for (k in 1:20) {
Z =
2010 Oct 11
1
plotting Zipf and Zipf-Mandelbrot curves in R
Using R, I plotted a log-log plot of the frequencies in the Brown Corpus
using
plot(sort(file.tfl$f, decreasing=TRUE), xlab="rank", ylab="frequency",
log="x,y")
However, I would also like to add lines showing the curves for a Zipfian
distribution and for Zipf-Mandelbrot.
I have seen these in many articles that used R in creating graphs.
Thank you!
[[alternative HTML
2003 Sep 17
3
Fractals in R and having fun! (and more persp and color)
Well, I started playing with fractals in R, and wrote a function to
generate de Mandelbrot set, which might
be of interest to some people
###########################################################################
# Mandelbrot set
###########################################################################
mandelbrot <- function(x = c(-3.0, 1.0), # x coordinates
y =
2003 Oct 20
0
Re: win.metafiles in linux and R
Dear all:
Professor Ripley commented:
> Note that libEMF's help page says
>
> It is also possible now to generate EMF files from PSTOEDIT
> on POSIX
> systems. Therefore, if your graphics code only outputs
> PostScript, you
> can now easily convert it to EMF.
>
> but that is only true on Windows (unfortunately).
>
Actually I have had some luck
2002 Dec 10
0
FW: Answers to "Problem with differences between S+ and R in parsing output tables with $"
To R-wizards:
Thank you for your quick an insightful responses. I now have R running
a translated version of S+ code for power calculations for non-normal
data. This is from the Michael Crawley's new book Statistical
Computing--An Introduction to Data Analysis using S-Plus. Peter Dalgaard
corrected me on the issue of the $ operator not being a parser. It sure
looked like an advanced Regex
2003 Jun 03
0
Rtips (was Re: ? building a database with a the great /cookbook
For me as a beginner a cookbook would be welcome. so many great code
examples are posted into the help list, but finding these is quite
difficult. I think it comes all down to the problem who is compiling
/ contributing and can judge what should go in.
In this respect, Detlef Steuer (suggestion , might be a solution
http://fawn.unibw-hamburg.de/cgi-bin/Rwiki.pl?RwikiHome.
Frank
>
2002 Dec 09
2
Problem with differences between S+ and R in parsing output tables with $
R-wizards
I have successfully run with S+ a statistical power calculation for
non-normal distributions as presented in M. Crawley?s new book.? When I
tried the newest version of R on the same code, the $ parse statement
doesn't seem to retrieve the appropriate number from a table. Note that
some of the cosmetic differences in the two tables have to be dealt with
by the parser. Any ideas
2009 Jun 24
0
[LLVMdev] New HLVM examples
HLVM is a garbage collected virtual machine built upon LLVM:
http://forge.ocamlcore.org/projects/hlvm/
The development of HLVM was described in a series of three OCaml Journal
articles that turned out to be among our most popular. Consequently, we have
decided to run another series of related articles that build upon this
foundation in order to develop complete compilers. The first article
2017 Sep 29
0
Trouble when suppressing a portion of fast-math-transformations
Hi, Warren,
Thanks for writing all of this up. In short, regarding your suggested
solution:
> 4. To fix this, I think that additional fast-math-flags are likely
> needed in
>
> the IR. Instead of the following set:
>
> 'nnan' + 'ninf' + 'nsz' + 'arcp' + 'contract'
>
> something like this:
>
> 'reassoc' +
2011 Feb 04
2
vegan and sweave using xtable
Dear all,
Using:
library(vegan)
data(BCI)
mod <- radfit(BCI[1,])
mod
RAD models, family poisson
No. of species 93, total abundance 448
par1 par2 par3 Deviance AIC BIC
Null 39.5261 315.4362 315.4362
Preemption 0.042797 21.8939 299.8041 302.3367
Lognormal 1.0687 1.0186 25.1528 305.0629 310.1281
2017 Sep 29
2
Trouble when suppressing a portion of fast-math-transformations
Hi all,
In a mailing-list post last November:
http://lists.llvm.org/pipermail/llvm-dev/2016-November/107104.html
I raised some concerns that having the IR-level fast-math-flag 'fast' act as an
"umbrella" to implicitly turn on all the lower-level fast-math-flags, causes
some fundamental problems. Those fundamental problems are related to
situations where a user wants to
2006 Aug 04
0
Proxy from Apache to local Lighttpd instance
Hello,
I''m having a serious problem proxying from Apache (2.2) to local Lighttpd
servers. I need this to run Rails instances on www.mysite.com/rails next to
the regular part from www.mysite.com.
Currently I get a working www.mysite.com/rails for only the first page,
controllers do not work. I am quite desperate in getting this to work as it
is the only way I can run Rails at our
2017 Nov 03
2
fractales
Mira el conjunto de mandelbrot en r cómo mola
https://www.google.es/amp/s/www.r-bloggers.com/the-mandelbrot-set-in-r/amp/
El 3 nov. 2017 4:20 PM, "eric" <ericconchamunoz en gmail.com> escribió:
> hola luis, podrias explicarte un poco mas ? que quieres decir con "obtener
> fractales de una imagen" ?
>
> Puedes construir una imagen con fractales, pero
2006 Nov 09
0
Apache configuration
i TRY TO CONFIGURE APACHE FOR RUBY ON RAILS ON UNIX.
BY THE FOLLOWING WAYl:
Install FastCGI
1. wget http://www.fastcgi.com/dist/fcgi-2.4.0.tar.gz
2. gunzip fcgi-2.4.0.tar.gz
3. tar -xvf fcgi-2.4.0.tar
4. cd fcgi-2.4.0
5. ./configure
6. make
7. make install
8. cd ../
Install mod_fcgid
1. cd ~
2. wget http://fastcgi.coremail.cn/mod_fcgid.1.09.tar.gz
3. gunzip
2006 Aug 21
0
Puppet Cookbook
Hi all,
I haven''t done much with it so far, but I now have an instance of
MoinMoin up as a cookbook:
https://reductivelabs.com/cookbook/
It''s available over http or https, whichever you prefer.
I''m going to do what I can to start adding cookbook recipes and I''d
appreciate it if others would do the same. I also could help keeping
the cookbook running well --
2006 Mar 22
2
n00b question
Total Ruby N00b here with a question about the Hibbs OnLamp tutorial.
I''m trying to hook up to my cookbook database and I''m getting:
ActiveRecord::StatementInvalid in Recipe#index
Mysql::Error: #42S02Table ''cookbook.recipes'' doesn''t exist: SELECT COUNT(*)
FROM recipes
RAILS_ROOT: ./script/../config/..
My thoughts:
I think I''m not actually
2003 Jan 11
2
plotting and unplotting lines in R
I would like to plot and unplot a line to a graph using R's line
command. This would allow for sequentially trying different plotted
functions for a visual fit. Is there a way to do this?
Rex
2003 Jan 15
1
Is R really an open source S+ ?
This is not a criticism. I'm just curious. Is there an effort to keep R
comparable to S+?
Or are the two languages diverging? I am doing what probably legions have
done before me,
and legions will after me...using R on examples from text books written with
S+ code. Most of the
time everything appears to be equivalent. And then there are amazing
divergences in commands. For
instance:
S: