December 2013

Guessing Correlations: A shiny app

December 30, 2013 | Educate-R - R

A recent hobby of mine (as with many other R users) is to play around with the relatively new R package: shiny. I started creating demo applications about a year ago just to figure out how powerful the platform could be, but it was not until this fall that I ... [Read more...]

Happy new year

December 29, 2013 | chenangen

Although 2013 was not perfect for me, it still gave me a lot of happiness and beneficial experiences which were worthy to recall.  It is in 2014 that numerous difficult problems need to be solved. Application is still a headache and the final tests are also troublesome. Whereas,  2014 is full of hope. ... [Read more...]

Hadoop for R’s Data scientist

December 29, 2013 | G-Tch

I don’t exactly know where to start. But, after a real pleasant discussion with one of my ex colleague, it seems that there are many thongs around Hadoop ecosystem and R for analyst that should be said by a data scientist, means that, someone who don’t know much ... [Read more...]

The Tornado Project: Counting Tornadoes

December 29, 2013 | Gopi Goteti

The goal of this open source R-based analysis, as mentioned in my earlier post, is to bring consistency and transparency to the analyses of publicly available Tornado datasets.The project home page is on my GitHub site - https://github.com/Ra... [Read more...]

oro.dicom 0.4.0

December 29, 2013 | Brandon Whitcher

The R package oro.dicom contains data input/output functions for medical imaging data that conform to the Digital Imaging and Communications in Medicine (DICOM) standard, part of the Rigorous Analytics bundle.The latest version of oro.dicom (0.4.0) con... [Read more...]

oro.nifti 0.4.0

December 29, 2013 | Brandon Whitcher

Okay, so it's been quite a while since I provided an entry associated with oro.nifti.  That doesn't mean things haven't moved on... they have.  Let's just say I've been occupied.  One of the biggest changes to oro.nifti recently has been... [Read more...]

R interface to WebTide

December 29, 2013 | Dan Kelley Blog/R

A previous posting explained how to install WebTide on an OSX machine. This one shows how to hook up to an installed WebTide database, so that R code can get tidal predictions. The following code in the R language will produce a graph in which the top panel mimics the ... [Read more...]

Le Monde puzzle [#847]

December 28, 2013 | xi'an

Another X’mas Le Monde mathematical puzzle: A regular dice takes the values 4, 8 and 2 on three adjacent faces. Summit values are defined by the product of the three connected faces, e.g., 64 for the above. What values do the three other faces take if the sum of the eight summit ...
[Read more...]

Lyric Analytics

December 28, 2013 | jlebeau

I was messing around with the text mining (tm) package in R and was thinking of something I could comb through.  I looked through some other blogs and websites to see how they were using it:  mining through presidential speeches debates&... [Read more...]

Analyze your Google+ Posts with R [Update]

December 28, 2013 | julianhi

Hey everybody, today I show you how you can start working with the Google+ API and R. We create a personal API key, get our own stats and plot them in a nice looking graph. Get the API Key You can get our API key on the Google Developer console ... [Read more...]

Sundial calculations

December 28, 2013 | Dan Kelley Blog/R

After experimenting with calculations for what I eventually came to realize were analemma-based sundials (with shadow cast by a vertical pole), I remembered that the common sundial has a wedge as the shadow-maker. A bit of research told me that the wedge is called a gnomon. It is a right ... [Read more...]

Top Songs by Artist on CD102.5 in 2013

December 27, 2013 | Andrew Landgraf

In a previous post, I showed you how to scrape playlist data from Columbus, OH alternative rock station CD102.5. Since it's the end of the year and best-of lists are all the fad, I thought I would share the most popular songs and artists of the year, a... [Read more...]

Quantitative Finance Applications in R

December 27, 2013 | Joseph Rickert

by Daniel Hanson, QA Data Scientist, Revolution Analytics Extracting Financial Data from Internet Source Using R (first in a series) Earlier this month, a colleague and I attended a presentation on Computational Finance in R, given by Guy Yollin of the University of Washington Applied Mathematics faculty, at a meeting ...
[Read more...]

High frequency words in TOEFL

December 27, 2013 | chenangen

In general, TOEFL(Test of English as a Foreign Language) is not an easy test for Chinese students, including me.  Relatively speaking, the reading section is little easier than the other sections (listening, speaking, writing). Interestingly, when I prepared my TOEFL test, I found that some important words appeared frequently ... [Read more...]

Points, Polygons and Power Outages

December 27, 2013 | hrbrmstr

Most of my free coding time has been spent tweaking a D3-based live power outage tracker for Central Maine Power customers (there’s also a woefully less-featured Shiny app for it, too). There is some R associated with the D3 vis, but it’s limited to a cron job ...
[Read more...]
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