Monthly Archives: February 2012

Non overlapping labels on a ggplot scatterplot

February 22, 2012
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Non overlapping labels on a ggplot scatterplot

This is a very quick post just to share a quick tip on how to add non overlapping labels to a scatterplot in ggplot using a great package called directlabels. The trick is to make each point a single member group using an aesthetic like colour and then apply the direct.label function with the first.qp … Continue reading...

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Log File Analysis with R

February 21, 2012
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Log File Analysis with R

 R often comes up in discussions of heavy duty scientific and statistical analysis (and so it should).  However, it is also incredibly handy for a variety of more routine developer activities.   And so I give you… log file analysis with R!  I was just involved in the launch of gradesquare.com (go ahead – click...

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A Heartfelt Thank You and the Resulting GSoC Project

February 21, 2012
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A Heartfelt Thank You and the Resulting GSoC Project

PerformanceAnalytics has long enjoyed contributions from users who would like to see specific functionality included. Diethelm Wuertz at ETHZ, who is the author and sponsor of all the various R/Metrics packages is one of those contributors. I first met Diethelm when he hosted a conference on high-frequency data in the early 1990′s (where we fretted

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Webinar Wednesday: Introduction to Revolution R Enterprise

February 21, 2012
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If you haven't yet had a chance to catch my regularly-scheduled webinar, "Revolution R Enterprise - 100% R and More", it's a quick 30-minute introduction to the R language and the added features of Revolution R Enterprise. It's also a chance to ask me any questions you might have about R or Revolution Analytics during the live broadcast (starts...

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Berkeley Earth Surface Temperature: V1.5

February 21, 2012
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Berkeley Earth Surface Temperature: V1.5

My R package designed to import all of the Berkeley Earth Surface temperature data is officially on CRAN, as BerkeleyEarth.  The version there is 1.3 and I’ve completed some testing with the help of David Vavra. The result of that is version 1.5 which is available here at the drop box. I’ll be posting that

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polar histogram: pretty and useful

February 21, 2012
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polar histogram: pretty and useful

Do you have tens of histograms to show but no room to put them all on the page? As I was reading this paper in Nature Genetics, I came across a simple and clever way of packing all this information … Continue reading →

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Multiple Factor Model – Building Risk Model

February 20, 2012
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Multiple Factor Model – Building Risk Model

This is the fourth post in the series about Multiple Factor Models. I will build on the code presented in the prior post, Multiple Factor Model – Building CSFB Factors, and I will show how to build a multiple factor risk model. For an example of the multiple factor risk models, please read following references:

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Taking a Ride on the Wild Function – Introducing the dostats package

February 20, 2012
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Lately I have been rather productive in my programming and frustrated at the same time. Trying to solve the problems of creating a demographics summary table proved to be a lesson in frustration with R. Since I love R, this was disheartening. I did eventually find the reporttools package which does make a great latex

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DNA methylation (RRBS or target capture) analysis with R

February 20, 2012
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Reduced Representation Bisulfite sequencing (RRBS) is a popular technique for measuring methylation levels across genome. Although it does not have the full genome coverage, it covers many important regions for methylation. Below, I shared a tutorial a...

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how to install and load a package in r

February 20, 2012
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(This article was first published on twotorials by anthony damico, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and comment on his blog: twotorials by anthony damico. 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,...

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