RQGIS release 1.0.0

May 26, 2017
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RQGIS release 1.0.0

Today we are proud to announce a major release of the RQGIS package providing an interface between R and QGIS. We have completeley rewritten RQGIS by now using reticulate to establish a tunnel to the Python QGIS API.

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Regular Expression & Treemaps to Visualize Emergency Department Visits

May 25, 2017
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Regular Expression & Treemaps to Visualize Emergency Department Visits

It's been a while since my last post on some TB WHO data. A lot has happened since then, including the opportunity to attend the Open Data Science Conference (ODSC)...

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Shiny Application Layouts Exercises (Part-10)

May 25, 2017
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Shiny Application Layouts Exercises (Part-10)

Shiny Application Layouts – Shiny Themes In the last part of the series we will check out which themes are available in the shinythemes package. More specifically we will...

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CI for difference between independent R square coefficients

May 25, 2017
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CI for difference between independent R square coefficients

In an earlier blog post I provided R code for a CI of a difference in R square for dependent and non-dependent correlations. This was based on a paper...

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Love is all around: Popular words in pop hits

May 25, 2017
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Love is all around: Popular words in pop hits

Data scientist Giora Simchoni recently published a fantastic analysis of the history of pop songs on the Billboard Hot 100 using the R language. Giora used the rvest package...

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The Sierpinski Triangle: Visualising infinity in R

May 24, 2017
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The Sierpinski Triangle: Visualising infinity in R

Using the R programming language to draw the Sierpinski triangle fractal using the chaos game. Drawing a fractal using random numbers. Continue reading → The post

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Prediction intervals for NNETAR models

May 24, 2017
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The nnetar function in the forecast package for R fits a neural network model to a time series with lagged values of the time series as inputs (and possibly...

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Subplots in maps with ggplot2

May 24, 2017
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Subplots in maps with ggplot2

Following the surprising success of my latest post, I decided to show yet another use case of the handy ggplot2::annotation_custom(). Here I will show how to add small graphical...

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Euler Problem 22 : Names Scores

May 24, 2017
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Euler Problem 22 : Names Scores

A proposed solution in the R language to Euler Problem 22. What is the total of all the name scores in the file of 5163 first names? Continue...

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A recipe for dynamic programming in R: Solving a “quadruel” case from PuzzlOR

May 24, 2017
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As also described in Cormen, et al (2009) p. 65, in algorithm design, divide-and-conquer paradigm incorporates a recursive approach in which the main problem is: Divided into smaller sub-problems...

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How brute is your force?: Three ways to get radicals in batch using R

May 24, 2017
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How brute is your force?: Three ways to get radicals in batch using R

Brute force approach to solving a problem is usually the way of running through all possible combinations and repeating a certain calculation. Until a more elegant solution is devised...

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Data wrangling : I/O (Part-1)

May 24, 2017
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Data wrangling : I/O (Part-1)

Data wrangling is a task of great importance in data analysis. Data wrangling, is the process of importing, cleaning and transforming raw data into actionable information for analysis. It...

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Microsoft R Open 3.4.0 now available

May 24, 2017
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Microsoft R Open (MRO), Microsoft's enhanced distribution of open source R, has been upgraded to version 3.4.0 and is now available for download for Windows, Mac, and Linux. This...

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Counterintuitive probability problem of the day

May 24, 2017
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Counterintuitive probability problem of the day

TWO SHOT RUSSIAN ROULETTE WITH 2 BULLETS OR AN EQUAL CHANCE OF 1 or 3 BULLETS With p as the probability of dying on one shot, this figure shows...

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Win an ticket to San Francisco EARL

May 24, 2017
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Win an ticket to San Francisco EARL

This is your chance to win one of two 2-day passes to the first San Francisco EARL Conference on June 6 and 7. To win: All you need to...

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ggeffects: Create Tidy Data Frames of Marginal Effects for ‚ggplot‘ from Model Outputs #rstats

May 24, 2017
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ggeffects: Create Tidy Data Frames of Marginal Effects for ‚ggplot‘ from Model Outputs #rstats

Aim of the ggeffects-package The aim of the ggeffects-package is similar to the broom-package: transforming “untidy” input into a tidy data frame, especially for further use with ggplot. However,…

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6 new Jobs for R users – from all over the world (2017-05-24)

May 24, 2017
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6 new Jobs for R users – from all over the world (2017-05-24)

To post your R job on the next post Just visit this link and post a new R job to the R community. You can post a job for free (and there are also “featured...

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Growth of DataFest over the years

May 23, 2017
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Growth of DataFest over the years

In a previous post, I introduced DataFest and how one can streamline the organization of this event using Google Forms and tools from the tidyverse. In this post,...

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Create smooth animations in R with the tweenr package

May 23, 2017
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Create smooth animations in R with the tweenr package

There are several tools available in R for creating animations (movies) from statistical graphics. The animation package by Yihui Xie will create an animated GIF or video file, using...

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Rcpp 0.12.11: Loads of goodies

The elevent update in the 0.12.* series of Rcpp landed on CRAN yesterday following the initial upload on the weekend, and the Debian package and Windows...

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RStudio Connect 1.5.0 – Introducing Tags!

May 23, 2017
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RStudio Connect 1.5.0 – Introducing Tags!

We’re excited to announce a powerful new ability to organize content in RStudio Connect: version 1.5.0. Tags allow publishers to arrange what they’ve published and enable users to find...

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Only Hours Left to Get 50% off DataCamp

May 23, 2017
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Only Hours Left to Get 50% off DataCamp

This week, DataCamp is celebrating 1 million learners on its platform and is offering 50% off for unlimited access to the full curriculum. Join the learners who have completed...

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Ridge Regression and the Lasso

May 23, 2017
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Ridge Regression and the Lasso

In my last post Which linear model is best? I wrote about using stepwise selection as a method for selecting linear models, which turns out to have some issues...

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R⁶ — Idiomatic (for the People)

May 23, 2017
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NOTE: I’ll do my best to ensure the next post will have nothing to do with Twitter, and this post might not completely meet my R⁶ criteria. A single,...

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How to analyze max-diff data in R

May 23, 2017
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How to analyze max-diff data in R

This post discusses a number of options that are available in R for analyzing data from max-diff experiments, using the package flipMaxDiff. For a...

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simglm submission to CRAN this week

May 22, 2017
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This is a quick note looking for any further feedback on the simglm package prior to CRAN submission later this week. The goal is to submit Thursday or Friday...

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Preview of EARL San Francisco

May 22, 2017
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The first ever EARL (Enterprise Applications of the R Language) conference in San Francisco will take place on June 5-7 (and it's not too late to register). The EARL...

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The Marcos Lopez de Prado Hierarchical Risk Parity Algorithm

May 22, 2017
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The Marcos Lopez de Prado Hierarchical Risk Parity Algorithm

This post will be about replicating the Marcos Lopez de Prado algorithm from his paper building diversified portfolios that outperform … Continue reading →

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Instrumental Variables in R exercises (Part-2)

May 22, 2017
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Instrumental Variables in R exercises (Part-2)

This is the second part of the series on Instrumental Variables. For other parts of the series follow the tag instrumental variables. In this exercise set we will build...

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