1455 search results for "tutorial"

OpenAnalytics @ UseR 2013: What’s on the Program?

July 1, 2013
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Monday 1 July 2013 - 22:37 OpenAnalytics is once more proud sponsor of the yearly R User Conference and sent a strong delegation to present some of its recent work. On Tuesday July 9 Tobias Verbeke and Stephan Wahlbrink give a pre-conference...

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Power and sample size calculator for mitochondrial DNA association studies (Shiny)

July 1, 2013
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Power and sample size calculator for mitochondrial DNA association studies (Shiny)

The functions detailed inside the piece of code below (in a Gist) has been useful for me when I had to calculate many possible scenarios of statistical power and sample size. The formulae were taken from the article of Samuels … Sigue leyendo →

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Subscribing to updates from R-bloggers.com

June 30, 2013
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Tomorrow (July 1, 2013), Google Reader will retire. I can imagine the shock this will be for the 5,821 followers of this site who uses Google Reader in order to followup on news and tutorials from the global R world. If you are have considering a more committed relationship with this site and didn’t know what to do –...

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dimple d3 and rCharts

June 27, 2013
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dimple d3 and rCharts

I put together a quick tutorial combining my two favorite things: finance and interactive visualizations.  I show how to use the new dimplejs d3 library with rCharts to create some nice interactive plots of US Treasury yield data.  ...

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Learning Time Series with R

June 27, 2013
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by Joseph Rickert Late last Saturday afternoon I was reading in my usual spot at the Dana Street Coffee House in Mt. View. A stranger walking by my table noticed my copy of Madsen’s Time Series Analysis (sitting there untouched again) said he needed to learn something about time series and asked if I could recommend a book. He...

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Portfolio Optimization

June 27, 2013
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Portfolio Optimization

Changing tracks, I want to now look at portfolio optimization. Although this is very different from developing trading strategies, it is useful to know how to construct minimum-variance portfolios and the like, if only for curiosity’s sake. Also, just a … Continue reading →

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rClr: low level access to .NET from R

June 25, 2013
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rClr: low level access to .NET from R

rClr is a package to access arbitrary .NET code seamlessly. The "CLR" acronym part of the package name stands for Common Language Runtime. C# and R being languages I regularly use, I have felt the need for better interoperability between these for a fe...

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Predicting spatial locations using point processes

June 25, 2013
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Predicting spatial locations using point processes

I’ve uploaded a draft tutorial on some aspects of prediction using point processes. I wrote it using R-Markdown, so there’s bits of R code for readers to play with. It’s hosted on Rpubs, which turns out to be a great deal more convenient than WordPress for that sort of thing.

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My Stat Bytes talk, with slides and code

June 24, 2013
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On Thursday of last week I gave a short informal talk to Stat Bytes, the CMU Statistics department‘s twice a month computing seminar. Quick tricks for faster R code: Profiling to Parallelism Abstract: I will present a grab bag of … Continue reading →

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Time Is on My Side – A Small Example for Text Analytics on a Stream

June 23, 2013
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Time Is on My Side – A Small Example for Text Analytics on a Stream

Introduction and Background While my last posting was about recommendation in the context of Location Based Social Networks there are also other interesting topics regarding the analysis of unstructured data. The most established one is probably Text Analytics/Mining focusing on all sorts of text data.For me, coming from spatial analysis, these topic is relatively new but I couldn’t help noticing...

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