Accessing different data sources Sometimes, the data you need is available on the web. Accessing those will ease your life as a data scientist. I want to perform an exploratory data analysis on 2018/19 Season of England Premier league. Are there changes in team performances during the season timeline? Does some ...

In many regards, this post will be very different from previous entries. While the focus is the usual R-based statistical analysis, data collection is also discussed in depth and this in turn begs for basic Unix / macOS terminal commands. MS Windows users can refer to VirtualBox or Ubuntu installations. In ...

Mediation might be the ultimate example of how a method continues to be used despite a vast number of papers and textbooks describing the extremely strong assumptions required to estimate unbiased effects. My aim with this post is not to show some fancy method that could help reduce bias; rather ...

rBokeh is an interactive plotting library. It has the capability to extend its features with customized JavaScript code. I show the most important aspects, guide through an example, and provide some useful tipps how to handle likely issues. Der Beitrag rBokeh – Tipps and Tricks with JavaScript and beyond! erschien zuerst ...

Florianne Verkroost is a PhD candidate at Nuffield College at the University of Oxford. With a passion for data science and a background in mathematics and econometrics. She applies her interdisciplinary knowledge to computationally address societal problems of inequality. In this post, I will show you how to create interactive ...

If you have an R package on CRAN, you probably know about CRAN checks. Each package on CRAN, that is not archived on CRAN1, has a checks page, like this one for ropenaq: https://cloud.r-project.org/web/checks/check_results_ropenaq.html The table above is results of running ...

Note: This guide is intended for use with version 3.3 of Plotly On-Premise. In Part I of the tutorial, we created and configured an Azure VM. We then installed Dash Enterprise on the Azure VM. Finally, we configured Dash Enterprise and verified that our hostname pointed to the Azure VM’s ...

MCMCvis version 0.13.1 is now on CRAN, complete with new features for summarizing and visualizing MCMC output. See HERE and HERE for posts that cover general package features. Highlights since the last CRAN version include: ​MCMCsummary – Specify quantiles for … Continue reading →

As a self trained, informal, fly by the seat of my pants programming, I am hardly the “best” person to give advice about teaching other how to program. I have no formal background in computer science and have never had anyone teach me to program, it’s just been something ...

TL;DR Two methods for keeping your Shiny app organized while avoiding hardcoding. Softcoding Constants in a Shiny App They can be found everywhere. Text on buttons, urls to be linked, some numeric thresholds, a font to be used on ggplot, technical IDs to business names mapping, column names from ...

In our last post on covered calls we introduced the CBOE’s buy-write index (or BXM), whose underlying is the S&P500 index. We looked at some of the historical data, made a few comparisons between the index and the S&P, and noted that there was a report that ...

In our last post on covered calls we introduced the CBOE’s buy-write index (or BXM), whose underlying is the S&P500 index. We looked at some of the historical data, made a few comparisons between the index and the S&P, and noted that there was a report that ...

ggplot2 is a powerful data visualization tool of R. Make quick visualizations to explore or share your insights. Learning how aesthetics and attributes are defined in ggplot will give you an edge to develop your skills quickly. ggplot2 tips: distin...

To plot multiple figures on a single canvas in base R, we can change the graphical parameter mfrow. For instance, the code below tells R that subsequent figures will by drawn in a 2-by-3 array: If we then run this … Continue reading →