User Input using tcl/tk

August 13, 2012
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User Input using tcl/tk

I was inspired by Kay Cichini  recent post on creating a a tcl/tk dialog box for users to enter variable values. I am going to have a use for this very soon so took some time to make it a bit more generic. What I wanted is a function that takes a vector (of variable names)

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Quick SAP HANA and R usecase

Quick SAP HANA and R usecase

DISCLAIMER: I'm not an SAP HANA expert or an R expert, not even a Python expert. I'm just a guy with a lot of ideas who loves to write blogs.The other day I was thinking about making some nice with SAP HANA and R, because people doesn't seem to be enou...

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New R User Groups in San Antonio, Milwaukee, Nicaragua

August 13, 2012
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We have three new local R user groups to announce this month. The Alamo City R Users Group in San Antonio becomes the fifth R user group in Texas. The group's just getting started, and volunteers are always welcome. Although not a dedicated R group, the Milwaukee Chapter of the ASA hosts occasional R workshops. In May next year,...

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The fanplot package for R

August 13, 2012
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The fanplot package for R

My fanplot package has gone up on CRAN. Here is a online version of the vignette. Introduction The fanplot package contains a collection of R (R Development Core Team, 2012) functions to effectively display plots of sequential distributions such as … Continue reading →

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Highlights of R in Finance 2012

August 13, 2012
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Highlights of R in Finance 2012

I unfortunately was not there, but we can vicariously enjoy it via the presentations that are posted on the conference website. Below is my take on the highlights (in chronological order). Peter Carl and Brian Peterson “Constructing Strategic Hedge Fund Portfolios” is wonderful from my perspective.  Promoting random portfolios is sure to win my heart.  … Continue reading...

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User Input using tcl/tk

August 13, 2012
By
User Input using tcl/tk

I was inspired by Kay Cichini recent post on creating a a tcl/tk dialog box for users to enter variable values. I am going to have a use for this very soon so took some time to make it a bit more generic. What I wanted is a function that takes a vector...

Read more »

User Input using tcl/tk

August 13, 2012
By
User Input using tcl/tk

I was inspired by Kay Cichini recent post on creating a a tcl/tk dialog box for users to enter variable values. I am going to have a use for this very soon so took some time to make it a bit more generic. What I wanted is a function that takes a vector...

Read more »

googleVis 0.2.17 is released: Displaying earth quake data

August 13, 2012
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googleVis 0.2.17 is released: Displaying earth quake data

The next version of the googleVis package has been released on the project site and CRAN. This version provides updates to the package vignette and a new example for the gvisMerge function. The new sections of the vignette have been featured on this ...

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Zzzzzz….. – Quantified Self Toronto #14

August 12, 2012
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Zzzzzz….. – Quantified Self Toronto #14

Sleep is another one of those things like diet, where I feel if you asked anyone if they wanted to improve that area of their life most would say yes.I remember hearing a quote that sleep is like sex; no one is quite sure how much everyone else is getting, but they are pretty sure it is more than...

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Rgdal Package: R crash during "writeGDAL" solved

August 12, 2012
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Lost entire day fighting this ridicules crash during export of raster created in R to GeoTiff (other "rgdal" functions worked fine). This option worked well several months ago when I last time used it, so I wondered what happened. I searched ...

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The Social Dynamics of the R Core Team

August 12, 2012
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The Social Dynamics of the R Core Team

Recently a few members of R Core have indicated that part of what slows down the development of R as a language is that it has become increasingly difficult over the years to achieve consensus among the core developers of the language. Inspired by these claims, I decided to look into this issue quantitatively by

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Zurich, Jul 2012 – Advanced Portfolio eBook

August 12, 2012
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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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Now That We Live in Seattle

August 11, 2012
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It has been just a few weeks since my wife, my son, and I moved to Seattle so that I could begin my postdoc at The Hutch. Now that we have been here a short time and are settled, we intend to start exploring Seattle, doing typical touristy things as we...

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What have I been doing all these years?!

August 11, 2012
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What have I been doing all these years?!

In which Mo Farah et al show James that he's got a nasty heel-strike

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Tcl/Tk GUI Example with Variable Input by User

August 11, 2012
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Tcl/Tk GUI Example with Variable Input by User

I recently used R with GUI-elements for the first time and browsed through the available online resources, but I didn't quite find what I was searching for: The user should be able to put in some variables and call a function with a button. In the end ...

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Universal portfolio, part 10

August 10, 2012
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Universal portfolio, part 10

Part 9 compared the wealth of Universal against other portfolio selection algorithms by using the experimental cumulative distribution function of the relative wealth.  This leads to a very compact representation, but it completely hides the ...

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RcppExamples 0.1.4

August 10, 2012
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An updated version 0.1.4 of the RcppExamples package is now on on CRAN. RcppExamples contains a few illustrations of how to use Rcpp. The NEWS entry is below: a new example was added illustrating use of the (vectorised) random-number generators...

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Animated GIF Annual Correlation of 48 Industries for 50 Years

August 10, 2012
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Animated GIF Annual Correlation of 48 Industries for 50 Years

Inspired by http://blogs.reuters.com/felix-salmon/2012/08/06/chart-of-the-day-hft-edition/, I thought I would build on 48 Industries (Dendrogram Ordered) Over 50 Years, “Trend is Not Your Friend” Applied to 48 Industries, and 48 Industries Since 19...

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In case you missed it: July 2012 Roundup

August 10, 2012
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In case you missed them, here are some articles from June of particular interest to R users. The Environmental Performance Index website uses R to rank countries by measures like environmental health and ecosystem vitality. A log-linear regression in R predicted the gold-winning Olympic 100m sprint time to be 9.68 seconds (it was actually 9.63 seconds). Some R-related talks...

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Trends in run scoring – comparing the leagues

August 10, 2012
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My previous two posts have looked a using R to create trend lines for the run scoring environments in the American and National leagues.  This time around, I'll plot the two against each other to allow for some comparisons. (The code below assumes that you've read the data into your workspace and calculated the LOESS...

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RStudio server through ssh

August 10, 2012
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R language has numerous IDEs – RStudio, Vim plugin, Eclipse plugin. RStudio really shines for R language, nevertheless Vim plugin might be well adapted for R if you are Vim guru. Eclipse? Who needs such behemoth? Turns out a student in Ljubljana badly needs it. Most of the time I use remote server for R

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Why we are teaching massive open online courses (MOOCs) in R/statistics for Coursera

August 10, 2012
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Editor’s Note: This post written by Roger Peng and Jeff Leek.  A couple of weeks ago, we announced that we would be teaching free courses in Computing for Data Analysis and Data Analysis on the Coursera platform. At the same time, a number of ot...

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Simulation: The modeller’s laboratory

August 10, 2012
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Simulation: The modeller’s laboratory

In his 2004 paper in Trends in Ecology and Evolution, Steven Peck argues: Simulation models can be used to mimic complex systems, but unlike nature, can be manipulated in ways that would be impossible, too costly or unethical to do in natural systems. Simulation can add to theory development and testing, can offer hypotheses about the

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Importing data directly from MS Excel

August 10, 2012
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Importing data directly from MS Excel

R is great for exploring, analysing and graphing your valuable data. No question about it. Unfortunately though, there’s no base package support for importing data directly from MS Excel. This means that you have to faff about saving it in another format, and THEN import this new file. This just adds another file to your

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Brokering Closure is moving

August 10, 2012
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Brokering Closure is moving

Dear readers, this blog is moving out from wordpress.com to a new location. The new address is http://bc.bojanorama.pl. Please update your bookmarks. Drodzy czytelnicy, blog “Brokering Closure” wyprowadza się z wordpress.com pod nowy adres: http://bc.bojanorama.pl. Zaktualizujcie swoje linki/zakładki. Filed under: game theory, geek, networks, po polsku, R, social science, statistics, Uncategorized, web

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RProtoBuf 0.2.5

August 9, 2012
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A new release 0.2.5 of RProtoBuf is now on CRAN. RProtoBuf provides GNU R bindings for the Google Protobuf data encoding library used and released by Google. This release once again contains a number of patches kindly contributed by Murray Stokely...

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Installing the Development Version of R on Ubuntu (alongside the current version of R)

August 9, 2012
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A recent question was asked on the R-sig-Debian on installing the development version of R alongside the stable version. While most users of R do not need to have two versions installed on their machine, it is useful if you are developing packages for...

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48 Industries (Dendrogram Ordered) Over 50 Years

August 9, 2012
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48 Industries (Dendrogram Ordered) Over 50 Years

Thanks to reader AHWest for the comment on post 48 Industries Since 1963. “I think it would be interesting to see the industries ordered by some sort of similarity of returns.” I think this is a great suggestion, and I would like to see it also.&n...

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2012 Summer Olympics: Home Court Advantage – How Will the Brits Perform?

August 9, 2012
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2012 Summer Olympics: Home Court Advantage – How Will the Brits Perform?

The Olympics are a big deal on a global scale. How big? Perhaps Paula Radcliffe (an English long distance runner) said it best: "I have achieved a lot and I'm grateful for that - I'm just a bit greedy because I want to add the Olympics. It's...

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