211 search results for "animation"

A Demo for the Ratio Estimation in Sampling Survey (Animation)

March 24, 2010

$A Demo for the Ratio Estimation in Sampling Survey (Animation)$

mber Watkins gave me a suggestion on the animation for the ratio estimation, and I think this is a good topic for my animation package. I’ve finished writing the initial version of the function sample.ratio() for this package, which will appear in the version 1.1-2 a couple of days later. As we know, the benefit

Font Families for the R PDF Device

March 24, 2010

By Yihui Xie

otivated by the excellent R package pgfSweave, I begin to notice the font families in my graphs when writing Sweave documents. The default font family for PDF graphs is Helvetica, which is, in most cases (I think), inconsistent with the LaTeX font styles. Some common font families are listed in ?postscript, and we can take

R Tips in Stat 511

March 22, 2010

By Yihui Xie

$R Tips in Stat 511$

Here are some (trivial) R tips in the course Stat 511. I’ll update this post till the semester is over. Formatting R Code Reading code is pain, but the well-formatted code might alleviate the pain a little bit. The function tidy.source() in the animation package can help us format our R code automatically. By default

Press Enter in LyX Sweave as You Wish

February 18, 2010

By Yihui Xie

or a long time I’ve been wondering why we are not able to use Enter in the LyX Scrap environment which was set up by Gregor Gorjanc for Sweave. Two weeks ago, I (finally!) could not help asking Gregor about this issue, as I’m using “LyX + Sweave” more and more in my daily work.

Happy New Year with R

December 31, 2009

By Yihui Xie

I have to admit that the previous post on Christmas is actually not much fun. Today I received another pResent from Yixuan which is more interesting: Basically the code deals with letter polygons (i.e. glyphs) and plot them with proper projections from 3D to 2D space: ## original code by Yixuan <[email protected]>, with my slight modification h.x =

Merry Christmas using R

December 25, 2009

By David Smith

Yihui creates an Christmas greeting using R: See the R code to create an animated message in Flash here: Keep on Fighting: Merry Christmas Using R

Merry Christmas Using R

December 24, 2009

By Yihui Xie

Life should be fun. I saw a post in R-help list saying Merry Christmas to other useRs, and I followed up by some R code which can produce a naive animation like this: Here is the code to generate the above Flash animation with shining Christmas: library(animation) saveSWF({ n = length(speed <- runif(angle <- runif(x

Animation video of rgl in action

December 21, 2009

By Tal Galili

Duncan Murdoch just posted a youtube video presenting an animation clip of a 3d rgl object. Duncan even went further and wrote an explanation on how he made the video: here are the steps I used: 1. Design a shape to be displayed, and then play with the animation functions to make it change over time. Use play3d to do

Galton’s quincunx in R

December 13, 2009

By Gregor Gorjanc

Andrej Blejec has a very nice R demo of Galton's quincunx (link1, link2). It is a bit tedious to copy the code from PDF to R console, but it is worth the effort as the demo simulation clearly shows the nature of quincunx. After a bit of search I also f...