“Introduction to R” Course Milano; February 21-22, 2013

February 11, 2013
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Milano R net, in collaboration with Quantide, organizes "Introduction to R" Course February 21-22, 2013 Course description This two days course aims to provide an overview of the basic R environment and its applications. This course is intendended as a … Continue reading →

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analyze health professional shortage areas (hpsa) with r

February 11, 2013
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a health professional shortage area (hpsa) is a geographic area, population group, or health care facility that has been designated by the united states government as having an insufficient supply of medical providers, based on certain provider-to-popu...

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Using R: accessing PANTHER classifications

February 10, 2013
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Using R: accessing PANTHER classifications

Importing, subsetting, merging and exporting various text files with annotation (in the wide sense, i.e. anything that might help when interpreting your experiment) is not computation and it’s not biology either, but it’s housekeeping that needs to be done. Everyone has a weapon of choice for general-purpose scripting and mine is R. Yes, this is

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Finding Patterns Amongst Binary Variables with the homals Package

February 10, 2013
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Finding Patterns Amongst Binary Variables with the homals Package

It’s survey analysis season for me at work!  When analyzing survey data, the one kind of analysis I have realized that I’m not used to doing is finding patterns in binary data.  In other words, if I have a question … Continue reading →

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Publishing from R+knitr to WordPress

February 10, 2013
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Publishing from R+knitr to WordPress

Tal Galili asked a question on StackOverflow on publishing blog posts to WordPress from R + knitr. William K. Morris has written a solution long time ago, and I tweaked it a little bit and created a function knit2wp() in the development version of knit...

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Using deSolve package

February 9, 2013
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(This article was first published on Just Another R Blog, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and comment on their blog: Just Another R Blog. R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: Data science, Big Data, R jobs, visualization (ggplot2, Boxplots, maps,...

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Exposure with binomial responses

February 9, 2013
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Exposure with binomial responses

Last week, we’ve seen how to take into account the exposure to compute nonparametric estimators of several quantities (empirical means, and empirical variances) incorporating exposure. Let us see what can be done if we want to model a binomial response. The model here is the following: , the number of claims  on the period  is unobserved the number of...

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F1Stats – Correlations Between Qualifying, Grid and Race Classification

February 9, 2013
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F1Stats – Correlations Between Qualifying, Grid and Race Classification

Following directly on from F1Stats – Visually Comparing Qualifying and Grid Positions with Race Classification, and continuing in my attempt to replicate some of the methodology and results used in A Tale of Two Motorsports: A Graphical-Statistical Analysis of How Practice, Qualifying, and Past SuccessRelate to Finish Position in NASCAR and Formula One Racing, here’s

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CHANCE: special issue on George Casella’s books

February 9, 2013
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CHANCE: special issue on George Casella’s books

The special issue of CHANCE on George Casella’s books has now appeared and it contains both my earlier post on George passing away and  reviews of several of his books, as follows: Andrew Gelman on Introducing Monte Carlo Methods with R Bill Strawderman on Statistical Inference Jean-Louis Foulley on Variance Components Larry Wasserman on Theory

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Happy Birthday Florence Henderson

February 9, 2013
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Happy Birthday Florence Henderson

As a celebration of Florence Henderson’s 79th birthday (on February 14), I have created this scatterplot to use in my regression course. The plot depicts the relationship between time spent on mathematics homework outside of school (expressed as z-scores) and … Continue reading →

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Quantifying the international search for meaning

February 9, 2013
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Quantifying the international search for meaning

Inspired by Preis et al.’s article Quantifying the advantage of looking forward, recently published in Scientific Reports (one of Nature publishing group’s journals), I wondered if similar big-data web-based research methods might address a question even bigger than how much different countries wonder about next year. How about the meaning of life. Who is searching

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Finding a jump in data

February 9, 2013
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Finding a jump in data

The other day I saw a plot with some data with a clear jump in it. So I wondered if it were possible to determine the position of that jump. Data with a jump is easy enough made:library(ggplot2)n <- 100mydata <- data.frame(x=runif(n))mydata$...

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Introduction to Shiny Slides

February 9, 2013
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Below you can download the slides presented on February 9, 2013 at the Dallas R Users Group on RStudio’s Shiny framework which allows you to create interactive web applications in R. No knowledge of HTML or JavaScript is required! I introduce the alternatives and history of R programming on the web, the reactive programming model,

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Partial least squares path analysis

February 9, 2013
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Wayne Folta writes: I was looking for R packages to address a project I’m working on and stumbled onto a package called ‘plspm’. It seems to be a nice package, but the thing I wanted to pass on is the PDF that Gaston Sanchez, its author, wrote that describes PLS Path Analysis in general The post Partial...

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SoilWeb Updates

February 9, 2013
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SoilWeb Updates

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Learning R Using a Chemical Reaction Engineering Book: Part 4

February 8, 2013
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Learning R Using a Chemical Reaction Engineering Book: Part 4

The links to previous parts are listed here. (Part 1, Part 2, Part 3). In this part, I tried to recreate the examples in sections A.3.1 of the computational appendix in the reaction engineering book (by Rawlings and Ekerdt). Solving a … Continue reading →

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PID Control-R

February 8, 2013
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PID Control-R

On a whim, I thought it might be fun to try to implement a PID control algorithm ... in R.Yes, I know I have a strange idea of fun.BackgroundPID control is a heuristic method of automatically controlling processes as wide ranging as water levels in tan...

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Pills, half pills and probabilities

February 8, 2013
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Pills, half pills and probabilities

Yesterday, I was uploading some old posts to complete the migration (I get back to my old posts, one by one, to check links of pictures, reformating R codes, etc). And I re-discovered a post published amost 2 years ago, on nuns and Hell’s Angels in an airplaine. It reminded me an old probability problem (that might be known...

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packed off!!!

February 8, 2013
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packed off!!!

Deliverance!!! We have at last completed our book! Bayesian Essentials with R is off my desk! In a final nitty-gritty day of compiling and recompiling the R package bayess and the LaTeX file, we have reached versions that were in par with our expectations. The package has been submitted to CRAN (it has gone back

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Keep up with new R questions on StackOverflow with @StackOverflowR

February 8, 2013
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Last time I checked on the number of R questions on StackOverflow, back in June 2011, there were 5000. Today, there are 23,649. (For comparison, there are 15,649 questions about Matlab and 971 questions on SAS.) If you use Twitter, thanks to Trey Causey there's now an easy way to keep up with new R questions posted to StackOverflow....

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Using R to get h5-index for a list of journals

February 8, 2013
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In my last blog post I wrote about impact factors and h-index for different journals. That got me wondering about what the h5 index is for all of the journals that I read and may want to publish in. I could look them all up individually, but that sound...

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Crash course on R for financial and actuarial econometrics

February 8, 2013
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Crash course on R for financial and actuarial econometrics

Next Friday, I will give in Montréal a crash course entitled Econometric Modeling in Finance and Insurance with the R Language. Since IFM2 wanted this course to be an opportunity to discover R, the first part o fthe course will be on the R language. Slides can be downloaded from here. (since the course is still scheduled, all comments...

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Data Visualization: Graphics with GGPlot2

February 8, 2013
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Data Visualization: Graphics with GGPlot2

By: Sean M. Gonzalez  Basic plots in R using standard packages like lattice work for most situations where you want to see trends in small data sets, such as your simulation variables, which make sense considering lattice began with the Bell … Continue reading → The post Data Visualization: Graphics with GGPlot2 appeared first on Data Community DC.

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Extended (Simple) ASN Graph Visualization Example [R to D3]

February 8, 2013
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Extended (Simple) ASN Graph Visualization Example [R to D3]

The small igraph visualization in the previous post shows the basics of what you can do with the BulkOrigin & BulkPeer functions, and I thought a larger example with some basic D3 tossed in might be even more useful. Assuming you have the previous functions in your environment, the following builds a larger graph structure

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Deploying Shiny Server on Amazon EC2

February 8, 2013
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Setting up Shiny Server on Amazon’s Elastic Compute Cloud (EC2) can be a bit of a process if you’re unfamiliar with Linux system administration. Thankfully, we’ve done all the hard work for you! If you’re looking to get Shiny Server running in EC2 without delay, just boot up an instance of our public Amazon Machine

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Retrieve IP ASN & BGP Peer Info With R

February 7, 2013
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Retrieve IP ASN & BGP Peer Info With R

This is part of a larger project I’m working on, but it’s useful enough to share (github version coming soon). The fine folks at @TeamCymru have a great service to map IP addresses to ASN/BGP information en masse. There are libraries for Python, Perl and other languages but none for R (that I could find).

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Extracting the Epidemic Model: Going Beyond Florence Nightingale Part II

February 7, 2013
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Extracting the Epidemic Model: Going Beyond Florence Nightingale Part II

This is the second of a two part reexamination of Florence Nightingale's data visualization based on her innovative cam diagrams (my term) shown in Figure 1. Figure 1. Nightingale's original cam diagrams (click to enlarge)RecapIn Part I, I showed that FN applied sectoral areas, rather than a pie chart or...

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R User Group Meetings in Switzerland and London

February 7, 2013
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Mango Solutions is pleased to confirm details of two forthcoming  R User Group Meetings:  BaselR Date:                                     21st Feb 2013 Venue:                                 transBARent, Viaduktsrasse 3, CH 4051 Basel, Switzerland Time:                                     6.30 pm – 9.30pm Presentations:                  Kinetic evaluations of environmental metabolism data for the agrochemical industry using R – Johannes Ranke                   Estimating Switzerland’s quarterly GDP in R-...

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My R-Package Development Cheat Sheet

February 7, 2013
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In case you have no experience in writing an R-package yourself  but would like to start developing one right away, this post might be helpful.I'm about to finish my first own (serious) R-package these days (more on the package itself later). Whil...

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