Animated Statistics Using R http://R.yihui.name Animated Statistics Using R en-us Thu, 29 May 2008 18:18:34 GMT Thu, 29 May 2008 18:18:34 GMT http://R.yihui.name Function write.rss() in R package animation xieyihui[at]gmail.com xieyihui[at]gmail.com AniWiki: A Wiki for Statistical Animations http://animation.yihui.name/ Yihui Xie, xieyihui[at]gmail.com A wiki named "AniWiki"has been created for statistical animations now: http://animation.yihui.name. I will stop updating http://R.yihui.name and in future my efforts will be mainly made on "AniWiki". I just hope you can participate in the wiki project :-)

]]> Thu, 29 May 2008 18:15:02 GMT 13 Web Some Examples of Probability and Computational Statistics http://r.yihui.name/ Yihui Xie, xieyihui[at]gmail.com I'm just toooo busy to synchronize this website with my package animation... Today I spent a few hours on adding four examples in Probability Theory and Compuational Statistics. I hope somebody can help me update this site.

]]> Sat, 26 Apr 2008 23:54:01 GMT 12 Web Create Movies with ImageMagick http://r.yihui.name/misc/gif_pdf_grDev.htm Yihui Xie, xieyihui[at]gmail.com On second thoughts, I decided to include the format of GIF into my package (see the function saveMovie()), but the generating of GIF animations needs the (free) software "ImageMagick" to be installed. Maybe somebody likes GIF better than HTML animation pages. In fact we can even create MPEG movies because this format is also supported by ImageMagick.

This function is available in animation v0.1-6. See the help file for details.

]]> Wed, 23 Jan 2008 20:54:00 GMT 11 Technique Installation of R and add-on packages http://r.yihui.name/intro/install/index.htm Yihui Xie, xieyihui[at]gmail.com The installation page has been finished. Actually I don't think this is a good introduction... You should refer to other documents such as R-admin or "Making R Packages Under Windows", etc. By the way, I have also changed my plan for writing introductions to R, since I saw some excellent materials these days, for example, the web site created by Robert I. Kabacoff at http://www.statmethods.net.

]]> Tue, 22 Jan 2008 15:16:00 GMT 10 R Updating Examples in This Web Site http://r.yihui.name/ Yihui Xie, xieyihui[at]gmail.com This site hasn't been updated for more than a month... I have to modify and add some content now.

]]> Mon, 17 Dec 2007 00:00:07 GMT 9 Web 'animation' Updated to 0.1-3 http://r.yihui.name/gr/animation/index.htm Yihui Xie, xieyihui[at]gmail.com During the last month I have been writing the package 'animation', so I didn't update this web site. Now the lasted version is 0.1-3, containing 20 functions for creating animations and fulfilling other miscellaneous ideas; just use ani.news() to check the news. Now the package contains the following animated demonstrations: bootstrapping for i.i.d data, brownian motion, buffon's needle, k-fold cross-validation, flipping 'coins', k-means cluster algorithm, k-NN algorithm, moving window auto-regression and the four basic sampling schemes (simple random sampling without replacement, stratified sampling, cluster sampling and systematic sampling).

]]> Sat, 15 Dec 2007 00:00:06 GMT 8 R Function highlight.def() for Highlight http://r.yihui.name/misc/highlight.htm Yihui Xie, xieyihui[at]gmail.com Ultimately I finished a special function highlight.def() for creating the R definition file in the software Highlight. So the section "Highlight R Code" is also completed.

]]> Tue, 13 Dec 2007 00:00:05 GMT 7 Misc A Talk on Animations in Statistics http://www.yihui.name/cv/ Yihui Xie, xieyihui[at]gmail.com Today I gave a talk on the 2nd postgraduate forum on statistics for universities in Beijing, and my topic is "Animation in Statistics: Dynamic Graphics for Statistical Models and Practical Applications". It seems that they are both interested and amazed very much. My slides can be downloaded from my resume page.

]]> Wed, 12 Dec 2007 00:00:04 GMT 6 Misc Introduction to R http://r.yihui.name/intro/index.htm Yihui Xie, xieyihui[at]gmail.com This is just a personal introduction, including installation, functions, documentations and R help. There are actually many materials in R homepage.

]]> Fri, 26 Oct 2007 00:00:03 GMT 5 R Bootstrapping Added http://r.yihui.name/stat/machine_learning/bootstrapping/index.htm Yihui Xie, xieyihui[at]gmail.com I'm not so content with the current animation for bootstrapping. I should use some data from the real world and change the way of animations.

]]> Wed, 17 Oct 2007 00:00:02 GMT 4 Animation K-Means Cluster Analysis Added http://r.yihui.name/stat/multivariate_stat/kmeans/index.htm Yihui Xie, xieyihui[at]gmail.com The algorithm for "K-Means Cluster Analysis" is simple. I haven't write down the theories about this analysis yet.

]]> Mon, 15 Oct 2007 00:00:01 GMT 3 Animation The Way of Animation Found http://r.yihui.name/misc/java.htm Yihui Xie, xieyihui[at]gmail.com I spent really a lot of time on searching for a proper way for animations. After several trials, I found JavaScript could help me. HTML DOM is really important.

Cheers! Users won't need R or any other special programs to see my animations now -- just a browser supporting JavaScript is enough.

]]> Sun, 14 Oct 2007 00:00:00 GMT 2 Technique Creation of This Website http://r.yihui.name/ Yihui Xie, xieyihui[at]gmail.com Personally I don't like those complicated mathematical theories... And I believe many people hold the same opinion with me. I want to find some simpler approaches to learn statistics. That's my original motivation to create such a website.

Sure, I'm too lazy. Simulation and graphics alone cannot contribute to mathematics and statistics directly. So, we should face the reality anyway... We should prove the effect of gradient descent algorithm Xn+1 = Xn - γF'(Xn) instead of just giving an illustration.

]]> Sat, 06 Oct 2007 00:00:00 GMT 1 Web