Yesterday, the Munich datageeks Data Day took place. It was a totally fun event – great to see how much is going on, data-science-wise, in and around Munich, and how many people are interested in the topic! (By the way, I think that more than half the talks were about deep ... [Read more...]

We all like to think a few years' experience means we've learnt something: the same silly mistakes happen less often, and when they do we fix them in less time. Well, yes—ideally. [Read more...]

Today we are introducing tibbletime v0.0.2, and we’ve got a ton of new features in store for you. We have functions for converting to flexible time periods with the ~period formula~ and making/calculating custom rolling functions with rollify() (plus... [Read more...]

If you have previously attempted to analyze NFL data, it is likely that you have tried to scrape ESPN or football-reference, which provides a wealth on statistics surrounding game data. However, if you ever wanted to obtain truly in-depth data, then it... [Read more...]

Let’s say you have data containing a categorical variable with 50 levels. When you divide the data into train and test sets, chances are you don’t have all 50 levels featuring in your training set. This often happens when you divide the data set into train and test sets according ... [Read more...]

A little over a year ago, we decided to propose a data visualization course at the first-year level. We had been thinking about this for awhile, but never had the time to teach it given the scheduling constraints we had. … Continue reading → [Read more...]

[Read more...]

Idea Our colleagues over at the economics department became interested in using R/exams for generating large-scale exams in their introductory economics courses. However, they face the challenge that so far they had been writing static exercises and modified them by hand if they wanted to reuse them in a ... [Read more...]

Thanks to Paul Teetor, getSymbols() can now import data from Alpha Vantage!  This feature is part of the quantmod 0.4-11 release, and provides another another data source to avoid any Yahoo Finance API changes*.Alpha Vantage is a free web service that provides real-time and historical equity data.  They provide ... [Read more...]

I missed last week and almost forgot to add this week’s. Jonah Gabry returned from teaching a one-week course for a special EU research institute in Spain. Mitzi Morris has been knocking out bug fixes for the parser and some pull requests to refactor the underlying type inference to ... [Read more...]

I missed last week and almost forgot to add this week’s. Jonah Gabry returned from teaching a one-week course for a special EU research institute in Spain. Mitzi Morris has been knocking out bug fixes for the parser and some pull requests to refactor the underlying type inference to ... [Read more...]

Consider this tibble: vat_rates [Read more...]

The members of the R Ladies DC user group put together an R-themed crossword for a recent networking event. It's a fun way to test out your R knowledge. (Click to enlarge, or download a printable version here.) If you get stuck, you can find the answers here or at ... [Read more...]

[Read more...]

Election results are in The New Zealand Electoral Commission have released the final count of votes and seats from the 2017 election. Moving in the direction most sensible observers expected, the National Party lost two seats compared to the “on-th... [Read more...]

Here, in the spirit of my “Experiments with by_row()” post, are some experiments in writing and timing a function spread_to_list that converts a two-column tibble such as: x 1 y 2 z 3 t 4 to a named list: list( x=1, y=2, z=3, t=4 ) I need this for processing the parameter ... [Read more...]

A growing community of scientists from a variety of disciplines is moving the norms of scientific research toward open practices. Supporters of open science hope to increase the quality and efficiency of research by enabling the widespread sharing of datasets, research software source code, publications, and other processes and products ... [Read more...]

A growing community of scientists from a variety of disciplines is moving the norms of scientific research toward open practices. Supporters of open science hope to increase the quality and efficiency of research by enabling the widespread sharing of... [Read more...]

A growing community of scientists from a variety of disciplines is moving the norms of scientific research toward open practices. Supporters of open science hope to increase the quality and efficiency of research by enabling the widespread sharing of d... [Read more...]

It was recently brought to my attention by Hannah Frick that there are now sooo many R-Ladies chapters around the world! R-Ladies is a world-wide organization to promote gender diversity in the R community, and I’m very grateful to be part of this co... [Read more...]