September 2016

Learning Statistics on Youtube

September 19, 2016 | Flavio Azevedo

Youtube.com is the second most accessed website in the world (surpassed only by its parent, google.com). It has a whopping 1 billion unique views a month. [1, 2] It is a force to be reckoned with. In the video sharing platform, there are many brilliant and hard-working content creators producing high-quality ... [Read more...]

Running a model on separate groups

September 19, 2016 | Simon Jackson

Ever wanted to run a model on separate groups of data? Read on! Here’s an example of a regression model fitted to separate groups: predicting a car’s Miles per Gallon with various attributes, but spearately for automatic and manual cars. library(tidyverse) library(broom) mtcars %__% nest(-am) %__% mutate(...

[Read more...]

Introduction to R: free basic R course on DataCamp in italian

September 19, 2016 | Michy Alice

Quantide in partnership with DataCamp , offers an introductory online course to R completely in Italian. The course is free and open to anyone who wishes to participate. There is no requirement, you need only a Pc or a Mac with an Internet access. The post Introduction to R: free basic ... [Read more...]

Why R Math Functions on Windows are Slow, and How to Fix It

September 19, 2016 | Nigel

R on windows has much slower versions of the log, sine and cosine functions than are available on other platforms, and this can be a serious performance bottleneck for programs which frequently call these math functions. The reason for this is that the library R uses to obtain the log ... [Read more...]

Analyzing Stack Overflow questions and tags with the StackLite dataset

September 18, 2016 | Marco Pasin

The guys at Stack Overflow have recently released a very interesting dataset containing the entire history of questions made by users since the beginning of the site, back in 2008. It's called... [Read more...]

Analysing the US election using Youtube data

September 18, 2016 | Florian Teschner

Youtube is one of the channels the candidates for the US election use extensively to promote themself. Using the public Youtube API and the R package tuber it is pretty straightforward to create a snapshop of the online discussion and sentiment. First... [Read more...]

vecpack: an R package for packing stuff into vectors

September 18, 2016 | Simon Barthelme

Here’s a problem I’ve had again and again: let’s say you’ve defined a statistical model with several parameters. One of them is a scalar. Another is a matrix. The third one is a vector, and so on. When fitting the model the natural thing to do ... [Read more...]

Visualizing the Fragile State Index 2016

September 18, 2016 | Jesse

Every year the Fund For Peace produces the Fragile State Index, a list that scores each nation across 12 social, economic, and political dimensions with the sum of these scores being a total measure of that nations vulnerability to collapse. While the most fragile nations tend to always have high (bad) ... [Read more...]

Stepwise Regression – What’s not to like ?

September 18, 2016 | datadrumstick

Plenty, apparently. Besides encouraging you not to think , it doesn’t exactly do a great job at what it claims to do. Given a set of predictors, there is no guarantee that stepwise regression will find the optimal combination. Many of my statisticians buddies , whom I consult from time to ... [Read more...]

Accessing your Fitbit data

September 18, 2016 | Verena

Since I am a data junkie and bought my Fitbit Charge HR mainly because I wanted to collect and analyse data about myself, I was looking for ways to download the data to your computer. For most people the great stats overview in the app and in the online dashboard ... [Read more...]

Analyzing World Bank data with WDI, googleVis Motion Charts

September 17, 2016 | Tinniam V Ganesh

Recently I was surfing the web, when I came across a real cool post New R package to access World Bank data, by Markus Gesmann on using googleVis and motion charts with World Bank Data. The post also introduced me to Hans Rosling, Professor of Sweden’s Karolinska Institute. Hans ...

[Read more...]

A few thoughts on the existing code parallelization

September 17, 2016 | Vessy

A few weeks ago I worked on some old code parallelization. The whole process made me think about how efficient parallelization of the existing code in R can really be and what should be considered efficient. There is a lot … Continue reading → [Read more...]

New Zealand Election Study individual level data

September 17, 2016 | Peter's stats stuff - R

Individual level data is essential to understand voting behaviour My previous analysis has occasionally come up against the problem “only individual level data could resolve that,”. Since I last wrote that, the New Zealand Election Study data for ... [Read more...]

Multiple Regression (sans interactions) : A case study.

September 16, 2016 | datadrumstick

Dataset: state.x77 – Standard built-in dataset with 50 rows and 8 columns giving the following statistics in the respective columns. Population: population estimate as of July 1, 1975 Income: per capita income (1974) Illiteracy: illiteracy (1970, percent of population) Life Exp: life expectancy in years (1969–71) Murder: murder and non-negligent manslaughter rate per 100,000 population (1976) HS Grad: percent ...

[Read more...]

Reflections on EARL London 2016

September 16, 2016 | David Smith

The Mango Solutions team have done it again: another excellent Effective Applications of R (EARL) conference just wrapped up here in London. The conference was attended by almost 400 R users from companies all around the world, and was a really fun experience. I was honored to deliver a keynote presentation, ... [Read more...]

Fixing “Peer certificate cannot be authenticated”

September 16, 2016 | Andrew Collier

I’m currently getting the following error on a Windows machine: The machine in question is sitting behind a gnarly firewall and proxy, which I suspect are the source of the problem. I also need to use --ignore-certificate-errors when running chromium-browser, which points to the same issue. This seems to ... [Read more...]

MODIStsp: a new "R" package for MODIS Land Products preprocessing

September 16, 2016 | Lorenzo Busetto

In this post, we are introducing MODIStsp, a new "R" package allowing to automatize the creation of time series of rasters derived from Land Products data derived from MODIS satellite data (github.com/lbusett/MODIStsp; www.sciencedirect.com/science/article/pii/S0098300416303107. Development of MODIStsp started from modifications of the ...

[Read more...]

How to add pbapply to R packages

September 16, 2016 | Peter Solymos

As of today, there are 20 R packages that reverse depend/import/suggest (3/14/3) the pbapply package. Current and future package developers who decide to incorporate the progress bar using pbapply might want to customize the type and style of the progress bar in their packages to better suit the needs of ... [Read more...]

anytime 0.0.2: Added functionality

September 15, 2016 | Thinking inside the box

anytime arrived on CRAN via release 0.0.1 a good two days ago. anytime aims to convert anything in integer, numeric, character, factor, ordered, ... format to POSIXct (or Date) objects. This new release 0.0.2 adds two new functions to gather conversi... [Read more...]

MODIStsp: a new “R” package for MODIS Land Products preprocessing

September 15, 2016 | Posts on Lorenzo Busetto Website & Blog

In this post, we are introducing MODIStsp a new “R” package allowing to automatize the creation of time series of rasters derived from Land Products data derived from MODIS satellite data (; www.sciencedirect.com/science/article/pii/S0098300416303107). Development of MODIStsp started from modifications of the ModisDownload “R” script by ...

[Read more...]

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R-bloggers

R news and tutorials contributed by hundreds of R bloggers

September 2016

Learning Statistics on Youtube

Running a model on separate groups

Introduction to R: free basic R course on DataCamp in italian

Why R Math Functions on Windows are Slow, and How to Fix It

Analyzing Stack Overflow questions and tags with the StackLite dataset

Analysing the US election using Youtube data

vecpack: an R package for packing stuff into vectors

Visualizing the Fragile State Index 2016

Stepwise Regression – What’s not to like ?

Accessing your Fitbit data

Analyzing World Bank data with WDI, googleVis Motion Charts

A few thoughts on the existing code parallelization

New Zealand Election Study individual level data

Multiple Regression (sans interactions) : A case study.

Reflections on EARL London 2016

Fixing “Peer certificate cannot be authenticated”

MODIStsp: a new "R" package for MODIS Land Products preprocessing

How to add pbapply to R packages

anytime 0.0.2: Added functionality

MODIStsp: a new “R” package for MODIS Land Products preprocessing

September 2016

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