Monthly Archives: June 2010

Do Not Log-Transform Count Data, Bitches!

June 17, 2010
By
Do Not Log-Transform Count Data, Bitches!

OK, so, the title of this article is actually Do not log-transform count data, but, as @ascidacea mentioned, you just can’t resist adding the “bitches” to the end. Onwards. If you’re like me, when you learned experimental stats, you were taught to worship at the throne of the Normal Distribution. Always check your data and

Read more »

Stack exchange for statistical analysis needs you!

June 17, 2010
By
Stack exchange for statistical analysis needs you!

The proposal to create a StackExchange site for statistical analysis is steadily moving forward. We have now completed the scoping stage which involved finding enough people willing to express an interest in the idea, and voting on some example questions to define what is allowed and what is not allowed on the site. The on-topic

Read more »

Chart the U.S. Gross National Product with the Federal Reserve API

June 17, 2010
By
Chart the U.S. Gross National Product with the Federal Reserve API

The Federal Reserve of St. Louis has an amazing amount of economic data available through their API. You need to apply for an API key, and once you have been approved you include your API key as URL parameter to access your data. api_key='YOUR API KE...

Read more »

Installing Ruby on Linux as a User other than root

June 17, 2010
By
Installing Ruby on Linux as a User other than root

Ruby is best known as the language behind the rails web application framework. However, it is a very flexible general purpose language that can be used for tasks of direct interest to R Developers (parsing files, interacting with databases, processing...

Read more »

Playing with Primes in R (Part II)

June 17, 2010
By
Playing with Primes in R (Part II)

Popping Part III off the stack—where I ended up unexpectedly discovering that the primes and primlist functions are broken in the schoolmath package on CRAN—let's see what prime numbers look like when computed correctly in R. To do this, I've had to roll my own prime number generating function.Personalizing primes in RFor what I want...

Read more »

Playing with Primes in R (Part II)

June 17, 2010
By
Playing with Primes in R (Part II)

Popping Part III off the stack—where I ended up unexpectedly discovering that the primes and primlist functions are broken in the schoolmath package on CRAN—let's see what prime numbers look like when computed correctly in R. To do this, I've had to roll my own prime number generating function.Personalizing primes in RFor what I want...

Read more »

Messing with R packages

June 17, 2010
By

This was really frustrating. I’m trying to modify a package from Matt Johnson and although I could get the package he sent me to install flawlessly, I couldn’t un-tar it, make a change, re-tar it, and then R CMD INSTALL … Continue reading →

Read more »

Shrinking R’s PDF output

June 17, 2010
By

R is great for graphics, but I've found that the PDF's R produces when drawing large plots can be extremely large. This is especially common when using spplot() to plot a large raster. I've made a 15 page PDF full of rasters that was hundreds of MB in size.  Obviously I don't need all the detail (every pixel of...

Read more »

Shrinking R’s PDF output

June 17, 2010
By
Shrinking R’s PDF output

R is great for graphics, but I've found that the PDF's R produces when drawing large plots can be extremely large. This is especially common when using spplot() to plot a large raster. I've made a 15 page PDF full of rasters that was hundreds of MB in ...

Read more »

A new Q&A website for Data-Analysis (based on StackOverFlow engine) – is waiting for you

June 17, 2010
By
A new Q&A website for Data-Analysis (based on StackOverFlow engine) – is waiting for you

What is the StackOverFlow Q&A website about? StackOverFlow.com (“SO” for short) is a programming Q & A site that’s free. Free to ask questions, free to answer questions, free to read. Free, And fast. For the R community, SO offers a growing database of R related questions and answer (click the link to check them out). You might be asking yourself what’s...

Read more »