R-bloggers

Tomorrow marks the beginning of the second annual ShinyConf 2023 by Appsilon! ShinyConf aims to achieve three main objectives: showcasing recent advancements in R Shiny technology, promoting community engagement among Shiny developers from around the world, and providing a global platform for long-term knowledge sharing and application of state-of-the-art Shiny technology. ...

Introduction If you’re an active trader or investor, you’re probably aware of the importance of keeping up with the latest stock market news and trends. One tool that many traders use to stay on top of market movements is Finviz, a popular financial visualization website that offers a ...

Introduction If you’re an active trader or investor, you’re probably aware of the importance of keeping up with the latest stock market news and trends. One tool that many traders use to stay on top of market movements is Finviz, a popular financial visualization website that offers a ...

Rough Volatility New insights about the regularity of the instantaneous variance obtained from realized variance data (see Gatheral, Jaisson, and Rosenbaum (2018), Bennedsen, Lunde, and Pakkanen (2021, to appear), Fukasawa, Takabatake, and Westphal...

ShinyConf 2023 begins this week! With a great lineup of speakers and showcases this year, we thought we’d recap a small handful of last year’s recorded talks. 2022 was a big year for R Shiny. Our Appsilon R Shiny Conference resulted in close to 20 hours of materials covering tech talks, ...

Quarto is exciting! It is simple, seamless, and easy to use! Do you know what makes it even better? Interaction. Quarto integrates with R/Shiny instances and provides you with a way to make your documents interactive. In our previous tutorial on shiny.i18n + Quarto, we cooked up a ...

In previous posts we have shown that we can use time-to-event curves to describe the germination pattern of a seed population (see here). We have also shown that these curves can be modified to include the effects of external/internal factors/covariates, such as the genotype, the species, the humidity ...

A combinatorics puzzle from The Riddler about a Napoli solitaire where 4 x 10 cards numbered from 1 to 10 are shuffled and the game is lost when a number (1,2, or 3) is equal to its position modulo 3 (1,2 or 3). A simple R code shows that the probability of winning is around […]

Abstract: We use simulation to analyse the family dicing game “Super Six”. In particular we show that the person starting the game has a very high chance of winning the game. Furthermore, a robust strategy to play during the game is to keep throwing the dice regardless of the number ...

Yesterday I put up a post where I described how I scraped The International Bartenders Association (IBA) cocktails into csv and json format. Timothy Wolodzko had a reasonable question regarding this on Mastodon: Two reasons: Data that&r...

Introduction Often economic and other Machine Learning data are of different units or sizes making either estimation, interpretation or visualization difficult. The solution to these issues can be handled if the data can be transformed to unitless ...

Overview Data analysis is a useful way to help solve problems in quite a few situations. There are many things that go into effective data analysis, but three are commonly mentioned 1. defining the problem you want to solve through data analysis 2. meaningful data collected 3. the skills (and expertise) to analyze ...

The R Consortium has opened a call for proposals seeking projects that improve the technical or social infrastructure of the R ecosystem. For a long time now I’ve wanted to make some upgrades to the Big Book of R which will enhance it’s usability, stability and enhance the ...