April 2017

Luke-warm about micromaps

April 29, 2017 | Peter's stats stuff - R

Continuing my exploring methods for spatial visualisation of data in R, today I’m looking at linked micromaps. Micromaps are a way of showing statistical graphics for a small subset of regions at a time, with a small map indicating which regions are... [Read more...]

R Weekly Bulletin Vol – VI

April 29, 2017 | R programming

This week’s R bulletin will cover topics like how to parse milliseconds in R, how to format dates and method to extract specific parts of date and time. Hope you like this R weekly bulletin. Enjoy reading! Shortcut Keys 1. Indent – hit Tab button at beginning of the line 2. Outdent – ...
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Make pleasingly parallel R code with rxExecBy

April 28, 2017 | David Smith

Some things are easy to convert from a long-running sequential process to a system where each part runs at the same time, thus reducing the required time overall. We often call these "embarrassingly parallel" problems, but given how easy it is to reduce the time it takes to execute them ... [Read more...]

Retrieving Reading Levels with R

April 28, 2017 | jlebeau

For those that don't work in education or aren't aware, there is a measurement for a child's reading level called a Lexile ® Level.  There are ways in which this level can be retrieved using different reading assessments.  The measurement can be used to match a child's reading level to books ... [Read more...]

Beautiful boxplots in base R

April 28, 2017 | biomickwatson

As many of you will be aware, I like to post some R code, and I especially like to post base R versions of ggplot2 things! Well these amazing boxplots turned up on github – go and check them out! So I did my own version in base R – check out ... [Read more...]

NY R Conference

April 27, 2017 | R Views

The 2017 New York R Conference was held last weekend in Manhattan. For the third consecutive year, the organizers - a partnership including Lander Analytics, The New York Meetup and Work-Bench - pulled off a spectacular event. There was a wide range of outstanding talks, some technical and others more philosophical, ...
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a secretary problem with maximum ability

April 27, 2017 | xi'an

The Riddler of today has a secretary problem, where one measures sequentially N random variables until one deems the current variable to be the largest of the whole sample. The classical secretary problem has a counter-intuitive solution where one first measures N/e random variables without taking any decision and ... [Read more...]

Where Europe lives, in 14 lines of R Code

April 27, 2017 | David Smith

Via Max Galka, always a great source of interesting data visualizations, we have this lovely visualization of population density in Europe in 2011, created by Henrik Lindberg: Impressively, the chart was created with just 14 lines of R code: (To recreate it yourself, download the GEOSTAT-grid-POP-1K-2011-V2-0-1.zip file ... [Read more...]

Load, Save, and .rda files

April 27, 2017 | wszafranski

A couple weeks ago I stumbled across a feature in R that I had never heard of before. The functions save(), load(), and the R file type .rda. The .rda files allow a user to save their R data structures such as vectors, matrices, and data frames. The file is ...
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Data Science for Operational Excellence (Part-4)

April 27, 2017 | Lauro Silva

Suppose your friend is a restaurant chain owner (only 3 units) facing some competitors challenges related to low price, lets call it a price war. Inside his business he knows that there’s no much cost to be cut. But, he thinks that, maybe if he tries harder to find better ... [Read more...]

Realy, Realy Big VARs

April 27, 2017 | insightr

By Gabriel Vasconcelos Overview If you have studied Vector Autorregressive (VAR) models you are probably familiar with the “curse of dimensionality” (CD). It is very frustrating to see how ordinary least squares (OLS) fails to produce reliable results even for … Continue reading →
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