Debugging basics in R

June 4, 2010
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Jay Emerson, professor of statistics at Yale University, introduces basic core functions for simple debugging in R, including print(), cat() and browser(). This talk was presented at the NYC R Statistical Programming Language Meetup on June 3, 2010.

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How to Create an R Package in Windows

How to Create an R Package in Windows

There are many reasons to create an R package, such as codes protection, convenient usage, etc. However, creating an R package in Unix is not hard, it IS in Windows, as R is designed in a Unix environment which includes a set of compilers, programming utilities, and text-formatting routines while Windows lacks those. I used to build an R...

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inline 0.3.5

June 3, 2010
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Yesterday morning, Romain pushed inline release 0.3.5 to CRAN. This is some ways a continuation of the 0.3.4 release I had made in December. That release had opened the door for the wide use of inline in our Rcpp package. And just how Rcpp has grown, ...

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inline 0.3.5

Yesterday morning, Romain pushed inline release 0.3.5 to CRAN. This is some ways a continuation of the 0.3.4 release I had made in December. That release had opened the door for the wide use of inline in our Rcpp package. And just how Rcpp has gro...

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Tracking JAXA Arctic Sea Ice Extent Trends

June 3, 2010
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Tracking JAXA Arctic Sea Ice Extent Trends

See my Arctic Update Page for daily updates on Arctic Sea Ice Extent Arctic Sea Ice Extent (SIE) follows an annual cycle, with maximum levels usually in March and minimum values in September.  Many analysts use day-of-year charts to compare … Co...

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Introductory Statistics with R

June 3, 2010
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Introductory Statistics with R

I am in the process of reading several books on R, S or statistics. I can't say that I have completed any of these - at least to the depth that I would like to... but I have found them helpful up to this point in various ways. I'll add to these book...

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Making Data Work online conference

June 3, 2010
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O'Reilly is hosting a conference on June 9 on the topic of the analysis of large data sets. The title of the conference is Making Data Work: Ever since Hal Varian proclaimed that data analysis is the sexy career for the coming decade, people have been talking about data. And big data. And even bigger data. This online conference,...

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MODIS processing with R, GDAL, and the NCO tools

June 3, 2010
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MODIS processing with R, GDAL, and the NCO tools

I use MODIS data for analysis of vegetation dynamics around the world.  The native HDF file format provided by NASA is great for archiving the data (it's amazing how much information they include in each file), but unfortunately there aren't many tools for directly (and easily) extracting data stored across files like there are for the

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MODIS processing with R, GDAL, and the NCO tools

June 3, 2010
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MODIS processing with R, GDAL, and the NCO tools

I use MODIS data for analysis of vegetation dynamics around the world.  The native HDF file format provided by NASA is great for archiving the data (it's amazing how much information they include in each file), but unfortunately there aren't many ...

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Political Science with R

June 3, 2010
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Political Science with R

As a discipline, Political Science -- the analysis of the theory and practice and politics -- has been around for quite a while. (Our own CEO here at Revolution Analytics, Norman Nie, has been a leading academic and author in the field for over 40 years.) But it's only in recent years that a deluge of data about politics...

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graph gallery collage

June 3, 2010
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graph gallery collage

It does not quite respect the one color only requirements of the mango's t-shirt contest, but I played with Shape Collage and the graphics from the graph gallery to make this

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MODIS processing with R, GDAL, and the NCO tools

June 3, 2010
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MODIS processing with R, GDAL, and the NCO tools

I use MODIS data for analysis of vegetation dynamics around the world.  The native HDF file format provided by NASA is great for archiving the data (it's amazing how much information they include in each file), but unfortunately there aren't many tools for directly (and easily) extracting data stored across files like there are for the NetCDF format.  I...

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Plans for a Real tty Connection

June 2, 2010
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I reverted the name of the tty connection that I described previously, to “serial” connection and updated the patch to R 2.11.1. This name is more appropriate to its function and also makes way for another patch I am working on which implements the full POSIX terminal interface (essentially all of termios.h). The connection provided

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Baseball, basketball, and (not) getting better as time marches on

June 2, 2010
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Baseball, basketball, and (not) getting better as time marches on

PROS ARE NOT GETTING BETTER AT FREE THROWS Rick Larrick recently told Decision Science News that baseball players have been getting better over the years in a couple ways. First, home runs and strikeouts have increased. The careless or clueless reader might note that this is curious, for from the batter’s perspective home runs are

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RODM: An R package for Oracle Data Mining

June 2, 2010
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RODM: An R package for Oracle Data Mining

The folks at Oracle have announced an R package that provides an interface to the Oracle Data Mining option of their 11g database . See more at this Oracle blog.

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Color Palettes in R

June 2, 2010
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Color Palettes in R

The simplest versions of plots use color rather sparingly. For instance, consider this simple bar chart:n=seq(1:12)barplot(n)Not exactly the most colorful thing you've ever seen eh?R provides standard color palettes comprised of vectors containing a s...

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Supercharging business analytics with R

June 2, 2010
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Really pleased with how our webinar today, Supercharge BI and Dashboards with Predictive Analytics, turned out. Steve Miller from OpenBI gave a great introduction to the motivations and need for predictive analytics. Andrew Lampitt from Jaspersoft was next up, with an overview of the Jaspersoft system for BI reports and dashboards. My section focused mainly on R and its...

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Data preparation for Social Network Analysis using R and Gephi

June 2, 2010
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Data preparation for Social Network Analysis using R and Gephi

I want to share my experience in generating the data for social network analysis using R and analyzing it using Gephi... WHICH DATA STRUCTURE TO USE FOR LARGE GRAPHS?I quickly realized that using edge lists and adjacency matrix gets difficult as the g...

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Picture of me with Chengwu Yang, PhD

June 2, 2010
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Picture of me with Chengwu Yang, PhD

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Marking Your Graphics

June 2, 2010
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Marking Your Graphics

Over at The Book Blog, Tango has a post about standardizing Pitch F/X graphs to be catcher/batter/umpire view. While I don't think this should necessarily be the case for all Pitch F/X graphics, it brings up another issue that I've had with some graph...

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inline 0.3.5

June 2, 2010
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The inline package is an amazing, yet simple, package for R. It allows to dynamically (within the R session) define R functions and S4 methods with inlined C/C++/Fortran code. Together with RUnit, inline powers the entire unit test suite of Rcpp. ...

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More Free Online Instructional Videos on R

June 2, 2010
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I previously posted a set of links to online videos on R. I organised videos into three categories: (1) what is R; (2) how to do basic data analysis in R; and (3) how to use intermediate and advanced tools in R. Since writing the post I've discovered ...

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More Free Online Instructional Videos on R

June 2, 2010
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I previously posted a set of links to online videos on R. I organised videos into three categories: (1) what is R; (2) how to do basic data analysis in R; and (3) how to use intermediate and advanced tools in R. Since writing the post I've discovered ...

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Singapore Presentations

June 1, 2010
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(This article was first published on Rmetrics blogs, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and comment on his blog: Rmetrics blogs. R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL, Eclipse, git, hadoop, Web...

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Indian Financial Market Data

June 1, 2010
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(This article was first published on Rmetrics blogs, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and comment on his blog: Rmetrics blogs. R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL, Eclipse, git, hadoop, Web...

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Trading for Speed in H2H Fantasy Leagues

June 1, 2010
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Trading for Speed in H2H Fantasy Leagues

As a followup to my last article at FBJ, I took a look at the distributions of weekly totals for Stolen Bases to gauge win expectancies in the SB category in H2H fantasy baseball formats. The study is again pretty simple, as I just subtract one hypoth...

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R Commander – a good introductory GUI for R

June 1, 2010
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R Commander – a good introductory GUI for R

The R software is very powerful and flexible but one of the complaints of new users is that the learning curve is steep and can be daunting. There have been various projects to create GUIs for R with varying levels of sophistication, one of which is R Commander by John Fox. Fast Tube by Casper This interface

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Reminder: Supercharging BI with R webinar tomorrow

June 1, 2010
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If you haven't done so already, it's not too late to register for tomorrow's 1-hour webinar, Supercharge BI and Dashboards with Predictive Analytics. I'll be one of the presenters, talking about R and its applications for business intelligence. The topics and speakers will be: Introduction: Analytics and BI (Steve Miller, OpenBI) How BI Complements Predictive Analytics (Andrew Lampitt, Jaspersoft)...

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Program for useR! 2010 announced

June 1, 2010
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The program of invited lectures, contributed talks and posters for this year's annual R user conference useR! 2010 is now available, and it looks to be another excellent event. (Revolution Analytics is a sponsor of useR! 2010.) Of note this year is an increasing focus on commercial applications of R, with no less than three multi-talk sessions on applications...

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