Monthly Archives: August 2009

Everybody loves R

August 14, 2009
By

I found this articles in The New York Times" and I thought it would be nice to share them, By ASHLEE VANCE published on January 6, 2009, check them out, both are pretty interesting:http://www.nytimes.com/2009/01/07/technology/business-computing/07progr...

Read more »

Everybody loves R

August 14, 2009
By

I found this articles in The New York Times" and I thought it would be nice to share them, By ASHLEE VANCE published on January 6, 2009, check them out, both are pretty interesting:http://www.nytimes.com/2009/01/07/technology/business-computing/07progr...

Read more »

First 15 min. volatility impact on the day’s volatility

August 14, 2009
By
First 15 min. volatility impact on the day’s volatility

One night I was hooked on this post at elitetrader. I spent couple of hours to find, that a guy is cheating a bit and he didn’t reveal his strategy. Not big deal – free lunch is rear. So, I googled about that guy and one thing catch my attention. In one of his post

Read more »

Example 7.10: Get data from R into SAS

August 13, 2009
By
Example 7.10: Get data from R into SAS

In our previous entry, we described how to generate a dataset from SAS that could be used for analyses in R. Alternatively, someone primarily using R might want to test the new ”statistical graphics” procedures available starting with SAS 9.2. Her...

Read more »

ggplot2 Version of Figures in “Lattice: Multivariate Data Visualization with R” (Part 11)

August 13, 2009
By
ggplot2 Version of Figures in “Lattice: Multivariate Data Visualization with R” (Part 11)

This is the 11th post in a series attempting to recreate the figures in Lattice: Multivariate Data Visualization with R (R code available here) with ggplot2. Previous parts in this series: Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9, Part 10. Chapter 11 – Manipulating the “trellis”

Read more »

random 0.2.1

August 12, 2009
By

A maintenance fix was applied to random: following the changes in release 0.2.0 a few months ago that reflected changes at the random.org site, we needed to make one more change in randomSequence. Thanks for Lynn Amon for spotting this. The new pac...

Read more »

random 0.2.1

August 12, 2009
By

A maintenance fix was applied to random: following the changes in release 0.2.0 a few months ago that reflected changes at the random.org site, we needed to make one more change in randomSequence. Thanks for Lynn Amon for spotting this. The new packag...

Read more »

random 0.2.1

August 12, 2009
By

A maintenance fix was applied to random: following the changes in release 0.2.0 a few months ago that reflected changes at the random.org site, we needed to make one more change in randomSequence. Thanks for Lynn Amon for spotting this. The new pac...

Read more »

Completion for java objects

August 9, 2009
By

As indicated in this thread, completion after the dollar operator can be customized by defining a custom names method. Here I am showing how to take advantage of this to display fields and methods of java references (jobjRef objects from the rJava ...

Read more »

Example 7.9: Get data from SAS into R

August 8, 2009
By
Example 7.9: Get data from SAS into R

Some people use both SAS and R in their daily work. They might be more familiar with SAS as a tool for manipulating data and R preferable for plotting purposes. While our goal in the book is to enable people to avoid having to switch back and forth, ...

Read more »