littler 0.3.1

August 7, 2016
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littler 0.3.1

The second release of littler as a CRAN package is now available, following in the now more than ten-year history as a package started by Jeff in the summer of 2006, and joined by me a few weeks later. littler is the first command-line interface for R and predates Rscript. It...

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The magrittr monad

August 6, 2016
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The magrittr monad

Monads are a formal theory of composition where programmers get to invoke some very abstract mathematics (category theory) to argue the minutia of annotating, scheduling, sequencing operations, and side effects. On the positive side the monad axioms are a guarantee that related ways of writing code are in fact substitutable and equivalent; so you want … Continue...

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QuickLookR – A macOS QuickLook plugin for R Data files

August 6, 2016
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QuickLookR – A macOS QuickLook plugin for R Data files

I had tried to convert my data-saving workflows to feather but there have been issues with it supporting large files (that seem to be near resolution), so I’ve been continuing to use R Data files for local saving of processed/cleaned data. I make many of these files and sometimes I do it as a one-off... Continue reading...

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Yet the Worst Olympic Chart

August 5, 2016
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Yet the Worst Olympic Chart

Ah, the numbers! The Olympic Games are back in high style in Rio. Despite Brazil’s sluggish economy and unfulfilled promises for this Summer Olympic Games, I’d say, my expectations were met yesterday with such a beautiful opening ceremony. Let’s ...

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readr 1.0.0

August 5, 2016
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readr 1.0.0

readr 1.0.0 is now available on CRAN. readr makes it easy to read many types of rectangular data, including csv, tsv and fixed width files. Compared to base equivalents like read.csv(), readr is much faster and gives more convenient output: it never converts strings to factors, can parse date/times, and it doesn’t munge the column

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Map the Life Expectancy in United States with data from Wikipedia

August 5, 2016
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Recently, I become interested to grasp the data from webpages, such as Wikipedia, and to visualize it with R. As I did in my previous post, I use rvest package to get the data from webpage and ggplot package to visualize the data. In this post, I will map the life expectancy in White and Related Post

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Creating Annotated Data Frames from GEO with the GEOquery package

August 5, 2016
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Creating Annotated Data Frames from GEO with the GEOquery package

In this post, we will go over how to use the GEOquery package to download a data matrix (or eset object) directly into R and append specific probe annotation information to this matrix for it to be exported as a csv file for easy manipulation in Excel or spreadsheet tools. This is especially useful for sharing data with collaborators...

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Image recognition tutorial in R using deep convolutional neural networks (MXNet package)

August 5, 2016
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Image recognition tutorial in R using deep convolutional neural networks (MXNet package)

This is a detailed tutorial on image recognition in R using a deep convolutional neural network provided by the MXNet package. After a short post I wrote some times ago I received a lot of requests and emails for a much more detailed explanation, therefore I decided to write this tutorial. This post will show a reproducible...

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Higher Order Functions Exercises

August 5, 2016
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Higher Order Functions Exercises

Higher order functions are functions that take other functions as arguments or return functions as their result. In this set of exercises we will focus on the former. R has a set of built-in higher order functions: Map, Reduce, Filter, Find, Position, Negate. They enable us to complete complex operations by using simple single-purpose functions

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Interactive, Illustrator-quality graphics with R

August 5, 2016
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Interactive, Illustrator-quality graphics with R

While many media properties including the New York Times, FiveThirtyEight and FlowingData use the R language to prepare graphics for publication, they often use Adobe Illustrator or similar graphics tools to touch up the last 5% or so of the graphics. Not so for Switzerland's news site swissinfo.ch, whose data journalist Duc-Quang Nguyen created these gorgeous bar charts showing...

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RcppStreams 0.1.1

August 5, 2016
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RcppStreams 0.1.1

A maintenance release of RcppStreams is now on CRAN. RcppStreams brings the excellent Streamulus C++ template library for event stream processing to R. Streamulus, written by Irit Katriel, uses very clever template meta-programming (via Boost Fusion...

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Plain vanilla recurrent neural networks in R: waves prediction

August 5, 2016
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Plain vanilla recurrent neural networks in R: waves prediction

While continuing my study of neural networks and deep learning, I inevitably meet up with recurrent neural networks. Recurrent neural networks (RNN) are a particular kind of neural networks usually very good at predicting sequences due to their inner w...

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Plotting GPX tracks with Shiny and Leaflet

August 5, 2016
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Plotting GPX tracks with Shiny and Leaflet

Lately, I got the chance to play around with Shiny and Leaflet a lot - and it is really fun! So I decided to catch up on an old post of mine and build a Shiny application where you can upload your own GPX files and plot them directly in the browser.Of course,...

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Extending RCy3 Vignettes (Google Summer of Code Project)

August 4, 2016
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Extending RCy3 Vignettes (Google Summer of Code Project)

Cytoscape is a popular open-source program for visualizing and analyzing networks (biological and otherwise). This summer I have been working on a Google Summer of Code project with the National Resource for Network Biology that aims to make it easier...

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Getting Your Colleagues Hooked on R

August 4, 2016
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You love R and you want your colleagues to love R too. In our latest post we will walk you through seven tips and tricks for hosting a successful R demo at your company that will really impress your colleagues. You can read the full post at 7 Tips F...

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Simulating from the Bivariate Normal Distribution in R

August 4, 2016
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Simulating from the Bivariate Normal Distribution in R

by Joseph Rickert My guess is that a good many statistics students first encounter the bivariate Normal distribution as one or two hastily covered pages in an introductory text book, and then don't think much about it again until someone asks them to generate two random variables with a given correlation structure. Fortunately for R users, a little searching...

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[R] Kenntnis-Tage 2016 Summer Special: Get your tickets with the code “R-Bloggers” until August 21 and save money

August 4, 2016
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[R] Kenntnis-Tage 2016 Summer Special: Get your tickets with the code “R-Bloggers” until August 21 and save money

(Guest post by Oliver Bracht – eoda) Data Science goes professional is this year’s slogan of Kenntnis-Tage 2016, a German-language R event with tutorial sessions and business case presentations hosted in Kassel, Germany, on November 2nd and 3rd. After a successful premiere in the last year, the Kenntnis-Tage 2016 offering valuable insights into diverse application examples of the...

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A Case Study in Reproducible Model Building

August 3, 2016
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A Case Study in Reproducible Model Building

The U.S. Geological Survey (USGS) recently published a report describing a groundwater-flow model of the Wood River Valley (WRV) aquifer system. What makes this report unique (at least in my opinion) was the authors’ desire to make their work as r...

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No Sleep During the Reproducibility Session

August 3, 2016
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No Sleep During the Reproducibility Session

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. The markdown+Rknitr source code of this blog is available under a GNU General Public License (GPL v3) license from . Abstract R code is provided for implementing a statistical method by Nishiura, Miyamatsu, and Mizumoto...

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fashion() output with corrr

August 3, 2016
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Tired of trying to get your data to print right or formatting it in a program like excel? Try out fashion() from the corrr package: d <- data.frame( gender = factor(c("Male", "Female", NA)), age = c(NA, 28.1111111, 74.3), height = c(188, NA, 168.78906), fte = c(NA,...

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Farewell, inside-r.org: where to find alternative R resources

August 3, 2016
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Farewell, inside-r.org: where to find alternative R resources

We recently had to decomission inside-r.org, the R resources site created by Revolution Analytics in 2010. Links to inside-r.org now redirect to MRAN, which now contains much of the material which was there, including an R package directory, examples of R applications, and a guide for getting started with R. But if you're looking for something that was on...

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nzcensus on GitHub

August 3, 2016
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nzcensus on GitHub

Introduction A few months back the first, pre-CRAN versions of my nzelect package included some data from the New Zealand Census 2013. As noted in my last post, I’ve now split this into a separate nzcensus package, for ease of development and maint...

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In case you missed it: My Webinar on Model-Based Machine Learning

August 3, 2016
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In case you missed it: My Webinar on Model-Based Machine Learning

In case you missed my free webinar on “Model-Based Machine Learning“,  here is the recording. Apologies for the poor quality of the video. Domino Data Lab’s webinar platform suffered a service degradation while recording the event. The webinar slides may be found below. If you have any questions, please do not hesitate to contact me. Finally, I

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Heuristica: An R package for testing models of binary choice

August 2, 2016
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Heuristica: An R package for testing models of binary choice

It just got a lot easier to simulate the performance of simple heuristics. The post Heuristica: An R package for testing models of binary choice appeared first on Decision Science News.

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digest 0.6.10

August 2, 2016
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A new release, now at version number 0.6.10, of the digest package is now on CRAN. I also just prepared the Debian upload. This release, just like the previous one, is once again the work mostly of external contributors. Michel Lang added length chec...

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Access and Analyze 170 Monthly Climate Time Series Using Simple R Scripts

August 2, 2016
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Access  and Analyze 170 Monthly Climate Time Series Using Simple R Scripts

Open Mind, a climate trend data analysis blog, has a great Climate Data Service that provides  updated consolidated csv file with 170 monthly climate time series. This is a great resource for those interested in studying climate change. Quick, reliable … Continue reading →

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Attribution model with R (part 1: Markov chains concept)

As we know, a customer usually goes through a path/sequence of different channels/touchpoints before a purchase in e-commerce or conversion in other areas. In Google Analytics we can find some touchpoints more likely to assist to conversion than others that more likely to be last-click touchpoint. As most of the channels are paid for (in The post

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New Course: Introduction to Portfolio Analysis in R

August 2, 2016
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New Course Announcement: Introduction to Portfolio Analysis in R One golden rule in investing is to always test your portfolio strategy on historical data. Then, you should constantly monitor the strategy's performance after you begin trading. In thi...

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Stock prices analysis part 2 exercises

August 2, 2016
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Stock prices analysis part 2 exercises

This is the second part of the exercises dedicated to analysis of stock prices. In this part we will provide exercises for plotting, fitting linear model and predicting stock prices. You dont need to be an expert stock’s trader in order to understand the examples, but you should go through part 1, since we shall

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