R style default plot for Pandas DataFrame

March 28, 2015
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R style default plot for Pandas DataFrame

The default plot method for dataframes in R is to show each numeric variable in a pair-wise scatter plot. I find this to be a really useful first look at dataset, both to see correlations and joint distributions between variables, but also to quickly diagnose potential strangeness like bands of repeating values or outliers. From

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Using closures as objects in R

March 27, 2015
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Using closures as objects in R

For more and more clients we have been using a nice coding pattern taught to us by Garrett Grolemund in his book Hands-On Programming with R: make a function...

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Replay: Reproducible data analysis with the checkpoint package

March 27, 2015
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Thanks to all who attended my webinar earlier this week, Reproducibility with Revolution R Open and the Checkpoint Package. If you missed the live session, you can catch up...

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rClr 0.7-4 released

March 26, 2015
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rClr 0.7-4 released

Version 0.7-4 of rClr (source code mirrored on GitHub), a package to access arbitrary .NET code seamlessly and in-process, has been released.This is a maintenance release with an...

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Google Scholar Finds Far More SPSS Articles; Analytics Forecast Updated

March 26, 2015
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Google Scholar Finds Far More SPSS Articles; Analytics Forecast Updated

Only last August I wrote that among scholars, the use of R had probably exceeded that of SPSS to become their most widely used software for analytics. That forecast was...

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Review of "Hands-On Programming with R"

March 26, 2015
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by Joseph Rickert There have been well over a hundred books on R published within the last ten years. Most of these texts with titles like “Introduction Statistics with...

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Pre-CRAN waffle update – isotype pictograms

March 26, 2015
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Pre-CRAN waffle update – isotype pictograms

It seems Ruben C. Arslan had the waffle idea about the same time I did. Apart from some extra spiffy XKCD-like styling, one other thing his waffling routines allowed...

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Planning an R usergroup meeting in R

March 25, 2015
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Planning an R usergroup meeting in R

The Edinburgh R usergroup (EdinbR) put together a survey a while back to figure out some of the logistical details for organising a succesful meeting. We had 75 responses...

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Participate in the 2015 Rexer Data Mining Survey

March 25, 2015
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Participate in the 2015 Rexer Data Mining Survey

Since 2007, Karl Rexer has been collecting data on the tools, skills and practices of statisticians and data miners. Over the years, his semi-annual Data Miner Survey has expanded...

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A function to help graphical model checks of lm and ANOVA

March 25, 2015
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A function to help graphical model checks of lm and ANOVA

As always a more colourful version of this post is available on rpubs. Even if LM are very simple models at the basis of many more complex ones, LM...

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NASDAQ 100 Couples

March 25, 2015
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NASDAQ 100 Couples

Heaven, I’m in heaven, and my heart beats so that I can hardly speak, and I seem to find the happiness I seek, when we’re out together dancing cheek...

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Le Monde puzzle [#904.5]

March 25, 2015
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Le Monde puzzle [#904.5]

About this #904 arithmetics Le Monde mathematical puzzle: Find all plural integers, namely positive integers such that (a) none of their digits is zero and (b) removing their leftmost...

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Machine Learning in R for beginners

March 25, 2015
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Machine Learning in R for beginners

Introducing: Machine Learning in R Machine learning is a branch in computer science that studies the design of algorithms that can learn. Typical machine learning tasks are concept learning,...

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Geomorph and Multivariate Datasets

March 25, 2015
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Did you know that geomorph is not just for landmark-based geometric morphometric (shape) data?We are committed to providing statistical tools for multivariate AND multidimensional morphometric data.As laid out in...

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A Speed Comparison Between Flexible Linear Regression Alternatives in R

March 25, 2015
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A Speed Comparison Between Flexible Linear Regression Alternatives in R

Everybody loves speed comparisons! Is R faster than Python? Is dplyr faster than data.table? Is STAN faster than JAGS? It has been said that speed comparisons are utterly meaningless,...

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Simulation and relative performance

March 24, 2015
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Simulation and relative performance

There’s been some nice posts on randomness the last week or so, in particular here and here. I would like to look at how we can use simulations to...

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2015-02 New Zealand’s Climate Data in R – An Introduction to clifro

March 24, 2015
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The National Climate Database contains data collected from around 6,500 weather stations throughout New Zealand, providing a necessary repository for any study involving New Zealand’s weather or climate. Although...

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Hash Table Performance in R: Part I

March 24, 2015
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Hash Table Performance in R: Part I

What Is It?A hash table, or associative array, is a well known key-value data structure. In R there is no equivalent, but you do have some options....

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Bio7 2.0 for Windows 32 bit Release

March 24, 2015
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24.03.2015 Because of some requests of a Windows 32 bit version of Bio7 2.0 I uploaded a built to sourceforge. Release notes: Updated R to version 3.1.3 Updated ImageJ...

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R in genomics @ SciLifeLab, Solna

March 24, 2015
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R in genomics @ SciLifeLab, Solna

Dear diary, I went to the Stockholm R useR group meetup on R in genomics at the Stockholm node of SciLifeLab. It was nice. If I had worked a...

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R Package ‘smbinning’: Optimal Binning for Scoring Modeling

March 24, 2015
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R Package ‘smbinning’: Optimal Binning for Scoring Modeling

by Herman Jopia What is Binning? Binning is the term used in scoring modeling for what is also known in Machine Learning as Discretization, the process of transforming a...

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ChainLadder 0.2.0 adds Solvency II CDR functions

March 24, 2015
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ChainLadder 0.2.0 adds Solvency II CDR functions

ChainLadder is an R package that provides statistical methods and models for claims reserving in general insurance.With version 0.2.0 we added new functions to estimate the claims development...

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Spliting a Node in a Tree

March 23, 2015
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Spliting a Node in a Tree

If we grow a tree with standard functions in R, on the same dataset used to introduce classification tree in some previous post, > MYOCARDE=read.table( + "http://freakonometrics.free.fr/saporta.csv", + head=TRUE,sep=";")...

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PubMed retraction reporting update

March 23, 2015
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PubMed retraction reporting update

Just a quick update to the previous post. At the helpful suggestion of Steve Royle, I’ve added a new section to the report which attempts to normalise retractions by...

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Factor Evaluation in Quantitative Portfolio Management

March 23, 2015
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Factor Evaluation in Quantitative Portfolio Management

When it comes to managing a portfolio of stocks versus a benchmark the problem is very different from defining an absolute return strategy. In the former one has to hold...

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Tomorrow, 10AMPT: Live webinar on "checkpoint" package

March 23, 2015
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A quick heads-up that tomorrow (Tuesday) at 10AM Pacific Time I'll be giving a live (and free) webinar: Reproducibility with Revolution R Open and the Checkpoint Package. I'll show...

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12 new R jobs (2015-03-23)

March 23, 2015
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12 new R jobs (2015-03-23)

This is the bimonthly post (for 2015-03-23) for new R Jobs from R-users.com. Employers: visit this link to post a new R job to the R community (it’s free and quick). Job seekers: please follow the links below...

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BayesFactor updated to version 0.9.11-1

March 23, 2015
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The BayesFactor package has been updated to version 0.9.11-1. The changes are:  CHANGES IN BayesFactor VERSION 0.9.11-1CHANGES  * Fixed memory bug causing importance sampling to fail.  CHANGES IN BayesFactor...

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Hypothesis Testing: Fishing for Trouble

March 23, 2015
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Hypothesis Testing: Fishing for Trouble

Monday 23 March 2015 - 14:50 Introduction "Can you check if this is significant?" It was a seemingly innocuous question from a dangerous source:...

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