March 2020

Outlier Days with R and Python

March 15, 2020 | R Views

Welcome to another installment of Reproducible Finance. Today’s post will be topical as we look at the historical behavior of the stock market after days of extreme returns and it will also explore one of my favorite coding themes of 2020 - the power of RMarkdown as an R/Python ...
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Flatten the COVID-19 curve

March 15, 2020 | Theory meets practice...

Abstract: We discuss why the message of flattening the COVID-19 curve is right, but why some of the visualizations used to show the effect are wrong: Reducing the basic reproduction number does not just stretch the outbreak, it also reduces the final size of the outbreak. This work is licensed ... [Read more...]

Retail Data: R Package

March 14, 2020 | R | datawookie

Have you ever noticed how things seem to get really expensive at specific times of the year? Like Mother’s Day and Valentine’s Day? Have you ever felt a bit ripped off when buying an over-priced bouquet of flowers or box of chocolates? Have you ever wondered just how ...
[Read more...]

Retail Data: R Package

March 14, 2020 | R on datawookie

Have you ever noticed how things seem to get really expensive at specific times of the year? Like Mother’s Day and Valentine’s Day? Have you ever felt a bit ripped off when buying an over-priced bouquet of flowers or box of chocolates? Have you ever wo... [Read more...]

Vectorising like a (semi)pro

March 14, 2020 | Data Imaginist

This is a short practical post about programming with R. Take it for what it is and nothing more… R is slow! That is what they keep telling us (they being someone who “knows” about “real” programming and has another language that they for some reason fail to be critical ...
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Retail Data: R Package

March 14, 2020 | R | datawookie

Have you ever noticed how things seem to get really expensive at specific times of the year? Like Mother’s Day and Valentine’s Day? Have you ever felt a bit ripped off when buying an over-priced bouquet of flowers or box of chocolates? Have you ever wondered just how ...
[Read more...]

RcppAPT 0.0.6

March 14, 2020 | Thinking inside the box

A new version of RcppAPT – our interface from R to the C++ library behind the awesome apt, apt-get, apt-cache, … commands and their cache powering Debian, Ubuntu and the like – is now on CRAN. RcppAPT allows you to query the (Debian or Ubuntu) ... [Read more...]

styler 1.3.0

March 14, 2020 | Posts on Lorenz Walthert

I am pleased to announce that styler 1.3.2 is available on CRAN. An emergency release and a maintenance release required from the CRAN team followed quickly after 1.3.0, so please make sure you use version 1.3.2. There are two major new features. Cachi... [Read more...]

styler 1.3.0

March 14, 2020 | Posts on Lorenz Walthert

I am pleased to announce that styler 1.3.2 is available on CRAN. An emergency release and a maintenance release required from the CRAN team followed quickly after 1.3.0, so please make sure you use version 1.3.2. There are two major new features. Caching to make repeated styling quicker and stylerignore, the feature for ... [Read more...]

ggraph tricks for common problems

March 13, 2020 | schochastics

In this post I am going to share some bits of code for some common problems that I encountered with {{ggraph}}. By problems, I do not mean problems in the package. Rather, I mean the things you want to do, that require going a little beyond the standard use cases. ... [Read more...]

Posts

March 13, 2020 | schochastics

[This article was first published on schochastics, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your [Read more...]

A deep dive into glmnet: type.gaussian

March 13, 2020 | kjytay

I’m writing a series of posts on various function options of the glmnet function (from the package of the same name), hoping to give more detail and insight beyond R’s documentation. In this post, we will look at the type.gaussian … Continue reading →
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Plot outliers and their values

March 13, 2020 | A.M. Barbosa

The ‘plot_outliers‘ function below draws a boxplot and a scatterplot of a numeric variable x and plots the values of the outliers (currently not offset, even if they overlap). For relatively small datasets, it can be a quick way to … Continue reading →
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#explainCovid19 challenge

March 13, 2020 | Przemyslaw Biecek

For some time, I’ve been interested in the verification of software libraries for eXplainable Artificial Intelligence (XAI). Not only in terms of the number of implemented algorithms but also actual usability for the end user. I found that it is chal...
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SPC Charting in R

March 13, 2020 | Christopher Reading

Divisional Information Specialist, Worcestershire Acute Hospitals NHS Trust By Christopher Reading For some time the Information Department at Worcestershire Acute […] The post SPC Charting in R appeared first on NHS-R Community. [Read more...]

Rebalancing ruminations

March 12, 2020 | R on OSM

Back in the rebalancing saddle! In our last post on rebalancing, we analyzed whether rebalancing over different periods would have any effect on mean or risk-adjusted returns for our three (equal, naive, and risky) portfolios. We found little eviden...
[Read more...]

Rebalancing ruminations

March 12, 2020 | R on OSM

Back in the rebalancing saddle! In our last post on rebalancing, we analyzed whether rebalancing over different periods would have any effect on mean or risk-adjusted returns for our three (equal, naive, and risky) portfolios. We found little evidence that returns were much different whether we rebalanced monthly, quarterly, yearly, ...
[Read more...]

RInside 0.2.16

March 12, 2020 | Thinking inside the box

A new release 0.2.16 of RInside arrived on CRAN and in Debian today. This comes almost exactly one year after the previous release 0.2.15. RInside provides a set of convenience classes which facilitate embedding of R inside of C++ applications and pr... [Read more...]
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