January 2019

Dow Jones Stock Market Index (1/4): Log Returns Exploratory Analysis

January 5, 2019 | Giorgio Garziano

CategoriesBasic Statistics Tags Data Visualisation Import Data R Programming In this four-post series, I am going to analyze the Dow Jones Industrial Average (DJIA) index on years 2007-2018. The Dow Jones Industrial Average (DIJA) is a stock market index that indicates the value of thirty large, publicly owned companies based ...

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Structural Analisys of Bayesian VARs with an example using the Brazilian Development Bank

January 5, 2019 | insightr

By Gabriel Vasconcelos Introduction Vector Autorregresive (VAR) models are very popular in economics because they can model a system of economic variables and relations. Bayesian VARs are receiving a lot of attention due to their ability to deal with larger … Continue reading →

$\displaystyle A_0y_t = v + A_1y_{t-1} + A_2y_{t-2} + \dots + A_py_{t-p} + \epsilon_t$

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How many red Christmas baubles on the tree?

January 5, 2019 | Stanislas Morbieu

Christmas time is over. It is time to remove the Cristmas tree. But just before removing it, one can ask: How many red Christmas baubles are on the tree? In order to answer this question, we will proceed with the following steps: Transform the picture into a dataframe, which is ...

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Reproducible Finance with R – book review

January 5, 2019 | Eran Raviv

Reproducible Finance with R is a clever book, with modern treatment of classical concepts. Here below is what I liked- and disliked about the book. Back when I was practicing Judo, there was a guy in my group who mastered that one exercise (called Uchi Mata). He could go fighting 20 ... [Read more...]

Here’s why 2019 is a great year to start with R: A story of 10 year old R code then and now

January 5, 2019 | Jozef's Rblog

Introduction It has been more than ten years since I wrote my first R code. And in those years, the R world has changed dramatically, and mostly to the better. I believe that the current time may be one of the best times to start working with R. In this ...

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Here’s why 2019 is a great year to start with R: A story of 10 year old R code then and now

January 5, 2019 | Jozef's Rblog

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R Helper Functions to Increase Efficiency

January 4, 2019 | Wei Lin

At Inspire, we have built an internal R package consisting of all kinds of functions to achieve business functionalities. In this package, we created some helper functions to make some frequent jobs simpler. Some of the helper functions are based on solutions provided on public websites, such as StackOverflow. In ... [Read more...]

My Activities in 2018 with R and ShinyApp

January 4, 2019 | jletteboer

What better way to analyze your activities data from Apple Health and Runkeeper into R and generating some visualizations and counters. After that I will wrapping it together into a […] The post My Activities in 2018 with R and ShinyApp appeared first on Networkx. [Read more...]

In case you missed it: December 2018 roundup

January 4, 2019 | David Smith

In case you missed them, here are some articles from December of particular interest to R users. R 3.5.2 is now available. Roundup of AI, Machine Learning and Data Science news from December 2018. AzureStor, a new R package to interface with Azure Storage. How to use the "plumber" package to create ... [Read more...]

Displaying our “R – Quality Control Individual Range Chart Made Nice” inside a Java web App using AJAX – How To.

January 4, 2019 | Laran Ikal

Prerequisites: What you should have installed: Java, it can be OpenJDK, you can get it from here: https://github.com/ojdkbuild/ojdkbuild Tomcat, any version from 8 up. Eclipse EE: Eclipse IDE for Java EE. Spring Tools Suite For Eclipse: https://spring.io/tools. You can install it from Eclipse Marketplace. ...

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This made me laugh . Great post!

January 4, 2019 | Holly Emblem

This made me laugh ????. Great post!

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What does it mean to write “vectorized” code in R?

January 3, 2019 | John Mount

One often hears that R can not be fast (false), or more correctly that for fast code in R you may have to consider “vectorizing.” A lot of knowledgable R users are not comfortable with the term “vectorize”, and not really familiar with the method. “Vectorize” is just a slightly ...

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Age a factor?

January 3, 2019 | Analysis of AFL

fitzRoy is as always a work in progress and I know that James and I are always keen on getting ideas on how to encourage users to produce great content that hopefully we all love to read, learn and debate. One of my personal favourite bloggers Tony over at matterofstats ... [Read more...]

gganimate: Animate YouR Security Analysis

January 3, 2019 | Russ McRee

I regularly challenge myself and others to visualize the results of their analysis, when and where the data permits it. The likes of ggplot2 enables this beautifully for R users. Then, in September 2018, gganimate hit my radar via R-bloggers and I had an epiphany. “gganimate extends the grammar of graphics ... [Read more...]

Looking into 19th century ads from a Luxembourguish newspaper with R

January 3, 2019 | Econometrics and Free Software

The national library of Luxembourg published some very interesting data sets; scans of historical newspapers! There are several data sets that you can download, from 250mb up to 257gb. I decided to take a look at the 32gb “ML Starter Pack”. It contains high quality scans of one year of ... [Read more...]

Purr yourself into a math genius

January 3, 2019 | Theory meets practice...

Abstract: We use the purrr package to solve a popular math puzzle via a combinatorial functional programming approach. A small shiny app is provided to allow the user to solve their own variations of the puzzle. This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. The markdown+Rknitr ... [Read more...]

Notebooks from the Practical AI Workshop

January 3, 2019 | David Smith

Last month, I delivered the one-day workshop Practical AI for the Working Software Engineer at the Artificial Intelligence Live conference in Orlando. As the title suggests, the workshop was aimed at developers, bu I didn't assume any particular programming language background. In addition to the lecture slides, the workshop was ... [Read more...]

‘data:’ Scraping & Chart Reproduction : Arrows of Environmental Destruction

January 3, 2019 | hrbrmstr

Today’s RSS feeds picked up this article by Marianne Sullivan, Chris Sellers, Leif Fredrickson, and Sarah Lamdanon on the woeful state of enforcement actions by the U.S. Environmental Protection Agency (EPA). While there has definitely been overreach by the EPA in the past the vast majority of its ...

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When to Use M or R in Power BI

January 3, 2019 | aaronddl

Recently, I was working on a large assignment involving complex data manipulation inside Power BI when a co-worker asked me a question I’m no stranger to: “Why are you doing that in M? Why not use R?” I stammered through a few reasons until they felt comfortable, but ultimately ... [Read more...]

x-mas tRees with gganimate, ggplot, plotly and friends

January 3, 2019 | smarterpoland

At the last homework before Christmas I asked my students from DataVisTechniques to create a ,,Christmas style” data visualization in R or Python (based on simulated data). Libaries like rbokeh, ggiraph, vegalite, shiny+ggplot2 or plotly were popular last year. This year there are also some nice submissions that use ... [Read more...]

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January 2019

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