## Making Emacs Buffer Names Unique Using the Uniquify Package

October 5, 2009
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If you ever work in Emacs with different files that all have the same name, this tip may be very useful for you. In my experience, this most often happens when working with Makefiles from multiple projects or directories. Assuming you have a buffer visiting a file called Makefile, by default Emacs will call the

## Expressions in expresssion passed to functions that return functions

October 5, 2009
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OK in the last two tips I explained how functions can return functions and how to leverage expressions. Now lets get complicated. This is really how my testing code works; expressions embeded in expressions that are passed to functions that return fu...

## Expressions!

October 5, 2009
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I never really saw a use for these until I started testing code en mass. I found myself doing lots and lots of copy and paste. I heard it from Steve McConnell in his Code Complete book where he said if you are copying and pasting you are programming ...

## Functions from functions

October 5, 2009
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I've been really busy lately working on my dissertation and applying for jobs. But I've found a few really cool things that I'd like to share. These are pretty complex things so lets break it up into a few tips. First Tip: did you know that you can re...

## Oil vs gas

October 5, 2009
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Recently, friend of my, got investment advise from his broker – long gas, because the price of gas is very low compared to oil. The broker didn’t indicate neither profit target or stop loss… I got hooked on the idea. First of all, I ran linear regression on monthly prices of oil and gas from 01-12-1993 to

## Including R Code in a Blog Post

October 5, 2009
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This post discusses ways of including formatted code in a blog post.I often write posts that include computer code. This might be R code, SPSS syntax, an Inquisit script, or a Visual Basic Macro.The Problem:Initially I did not know how to include this ...

## Using R to Analyze Baseball Games in “Real Time”

October 4, 2009
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This post originally appeared on my Wordpress blog on October 4, 2009. I present it here in its original form. In order to honor the last day of the 2009 MLB regular season (excepting the Twins/Tigers tiebreaker Tuesday night), I was reading...

## Using R to Analyze Baseball Games in “Real Time”

October 4, 2009
By

This post originally appeared on my Wordpress blog on October 4, 2009. I present it here in its original form. In order to honor the last day of the 2009 MLB regular season (excepting the Twins/Tigers tiebreaker Tuesday night), I was reading...

## Using R to Analyze Baseball Games in “Real Time”

October 4, 2009
By

In order to honor the last day of the 2009 MLB regular season (excepting the Twins/Tigers tiebreaker Tuesday night), I was reading a book that combines a few of my favorite thing: statistics, R, and baseball. The book, by Joseph Adler, is called Baseball Hacks, and I highly recommend it if you are interested in

## Calculating Scale Scores for Psychological Tests

October 4, 2009
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This post discusses how to calculate scale scores for multi-item scales. A lot of psychological research uses multi-item scales (e.g., personality tests, symptoms check lists, surveys, etc.). This post focuses on the issues involved with computing thes...

## Using doc-view with auto-revert to view LaTeX PDF output in Emacs

October 3, 2009
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$Using doc-view with auto-revert to view LaTeX PDF output in Emacs$

When I am authoring a document in Emacs, such as a report or my CV, it is useful for me to compile the source file periodically to see what the resulting file PDF looks like. I used to run a separate PDF viewer to look at the output, but I now have a complete Emacs

## Data Mining and Statistics Video Course

October 3, 2009
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David Mease has an online course presented with complete videos (Statistics 202: Statistical Aspects of Data Mining ). The course uses Excel and R.I might update this post with a few notes below on what is covered as I get a chance to watch t...

## smoothScatter in base R

October 2, 2009
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smoothScatter function is now available also in base R - in the recommended package graphics that is shipped with R. Originally this function was in the genepplotter package from Bioconductor. I really like it since it can nicely plot large datasets. B...

## smoothScatter in base R

October 2, 2009
By

smoothScatter function is now available also in base R - in the recommended package graphics that is shipped with R. Originally this function was in the genepplotter package from Bioconductor. I really like it since it can nicely plot large datasets. B...

## Make Safari behave as Firefox

Some weeks ago I switched from Firefox to Safari. While Safari is -- in my experience -- quicker, better looking, and has Top Sites, I was also missing some functionality of firefox. To be more precise, I missed the 'search when start typing' option, a...

## R Object Tooltips in ESS

October 1, 2009
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This post originally appeared on my Wordpress blog on October 1, 2009. I present it here in its original form. Whether at work or for personal projects, I use ESS a lot to perform interactive data analyses. The ability to write, edit, and su...

## R Object Tooltips in ESS

October 1, 2009
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This post originally appeared on my Wordpress blog on October 1, 2009. I present it here in its original form. Whether at work or for personal projects, I use ESS a lot to perform interactive data analyses. The ability to write, edit, and su...

## R Object Tooltips in ESS

October 1, 2009
By

Whether at work or for personal projects, I use ESS a lot to perform interactive data analyses. The ability to write, edit, and submit R commands to an interactive R process is simply something I cannot imagine analyzing data without. An example One thing that I end up having to do a lot is inspect

## R: The Dummies Package

September 30, 2009
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R-2.9.2 was released in August. While R can be considered stable and battle-ready, it is also far from stagnation. It is humbling to see such an intelligent and vibrant community helping CRAN grow faster than ever. Every day I see a new package or read a new comment on R-Help

## Measuring performance of functions in R

In R you can use the system.time(function) function to test the time it takes to execute a function. Because I had to do some extended performance testing in R, I wrote a new function based on system.time which gives you the possibility to run multiple...

## Example 7.14: A simple graphic of sales

September 29, 2009
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In this example, we show a simple plot of the sales rank data read in as shown in example 7.13.SASIn SAS, we use the symbol statement (section 5.3) to request small (with the h option) dots (with the v option, and that the dots not be connected (with the i option. (See sections 5.2.2, 5.3.9 for more details.)we...

## RInside release 0.1.1, and a fresh example

September 29, 2009
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Last week's 0.1.0 release of RInside, and the first to have been published on CRAN, still had some issues with builds and use on OS X. Thanks to testing and fixes by Jan de Leeuw, Jeff Horner and particularly Simon Urbanked, things are said to be better now with the new release 0.1.1 which went onto CRAN yesterday. So no new features,...

## RInside release 0.1.1, and a fresh example

September 29, 2009
By

Last week's 0.1.0 release of RInside, and the first to have been published on CRAN, still had some issues with builds and use on OS X. Thanks to testing and fixes by Jan de Leeuw, Jeff Horner and particularly Simon Urbanked, things are said to be bette...

## RInside release 0.1.1, and a fresh example

September 29, 2009
By

Last week's 0.1.0 release of RInside, and the first to have been published on CRAN, still had some issues with builds and use on OS X. Thanks to testing and fixes by Jan de Leeuw, Jeff Horner and particularly Simon Urbanked, things are said to be better now with the new release 0.1.1 which went onto CRAN yesterday. So no new features,...

## WordPress Blogging with R in 3 Steps

September 29, 2009
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A few people have emailed me and enquired about the use of tools mentioned at the end of this post to make blogposts with embedded R-commands. Below is a small step-by-step walkthrough of how to accomplish this. Write your blog post in a simple text file, you can include formatting using asciidoc syntax. Let’s

## WordPress Blogging with R in 3 Steps

September 29, 2009
By

A few people have emailed me and enquired about the use of tools mentioned at the end of this post to make blogposts with embedded R-commands. Below is a small step-by-step walkthrough of how to accomplish this. Write your blog post in a simple tex...

## Survive R

September 29, 2009
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New PDF slides version (presented at the Bay Area R Users Meetup October 13, 2009). We at Win-Vector LLC appear to like R a bit more than some of our, perhaps wiser, colleagues ( see: Choose your weapon: Matlab, R or something else? and R and data ). While we do like R (see: Exciting Related posts:

## Blogs on R | Statistics

September 28, 2009
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What are the current blogs on R? What do they cover?What makes a good blog on R?Of course different readers look for different things, but for me a good blog on R:Provides a Gateway: The blog discovers and shares useful external material and expla...