Exporting KML from R
Google Earth has become a popular way of disseminating spatial data. KML is the data format required to do this. It is possible to load almost any type of spatial...
January 2011
LaTeX Typesetting – Tables
One area of LaTeX that is not always straightforward is producing tabular material. In this post we will look at some of the basics of creating tables in a LaTeX document. Fast Tube by Casper When creating tables there is a tabular environment that can be used and we need ...
Animation from Kaggle traffic prediction competition
Below: two animations (same one twice, just as different speeds) I made from the highway data for the Kaggle traffic prediction competition.The data are travel times for 61 different sections of Sydney's M4 freeway, in both directions. The data comes i... [Read more...]
Le Monde puzzle [52|solution]
I have now received the first issue of Le Monde magazine, including the solution to puzzle #52 I solved just in time by simulated annealing! The trick is in using the following theorem: Iter(1,x,y) is divisible by 10x-1 if and only if y is divisible by 10x-1. Then the ... [Read more...]
Ten News Stories of 2010 – and the Statistics that Made Them
Significance MagazineAccording to Significance Magazine (jointly published by Royal Statistical Society and the American Statistical Association) the following are the top ten stories of 2010.1. Progress in the preven... [Read more...]
R-bloggers in 2010: Top 14 R posts, site statistics and invitation for sponsors
A year ago (on December 9th 2009), I wrote about founding R-bloggers.com, an (unofficial) online R journal written by bloggers who agreed to contribute their R articles to the site. In this post I wish to celebrate R-bloggers’ first birthday by sharing with you: Links to the top 14 posts of 2010 ... [Read more...]
Review: Statistical Analysis with R: Beginner’s Guide by John M. Quick
Summary: If you can get past the strange underlying story, then this gives a good introduction to R to someone with no programming experience. However, if you have any experience with other programming languages then another book is likely to be more suitable. Reference: Quick, J. M., Statistical Analysis in ... [Read more...]
Single variable optimization
Optimization means to seek minima or maxima of a funtion within a given defined domain.
If a function reach its maxima or minima, the derivative at that point is approaching to 0. If we apply Newton-Raphson method for root finding to f’, we can get the optimizing f.
Read More: 223 Words ... [Read more...]
Happy New Year with R (2011, Fireworks!)
Last year I posted an animation created in R to celebrate the new year, and this year I've got a more fabulous animation (available on CRAN)
The above animation comes from the demo('fireworks') in the R package animation 2.0-0. Thanks for the contri... [Read more...]
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