R-bloggers

Model evaluation with presence points and raster predictions

May 6, 2022 | A.M. Barbosa

The Boyce index (Boyce et al. 2002) is often described as a presence-only metric for evaluating the predictions of species distribution (or ecological niche, or habitat suitability) models (e.g. Hirzel et al. 2006, Cianfrani et al. 2010, Bellard et al. … Continue reading →

Key Rate Duration using R code

May 6, 2022 | sang-heon lee

This post explains how to calculate the key rate durations (KRD). Ho (1992) introduces KRD to measure non-parallel movements of the yield curve that the existing duration measures can not describe as these are defined under the assumption of ...

The link between Food Hygiene Ratings and Deprivation

May 5, 2022 | The Jumping Rivers Blog

Introduction If you’ve ever visited any food establishment in England & Wales, you’ve probably noticed the green labels somewhere on the outside with a Food Hygiene Rating from 0-5 on it. If y...

Mastering Git and GitHub: the hands-on workshop

May 5, 2022 | Mirai Solutions

On 25/05 learn the basis of version control via a hands-on 3.5-hours workshop using command line, R, RStudio or a web browser. Have you ever feared to mess up your code, to lose your development or to spend endless time to integrate a collaborator’s ...

The basics of prototyping and exporting your plots in R

May 5, 2022 | R on R (for ecology)

It’s super rewarding when you finally figure out how to plot and visualize your data. But to show off your plot to the rest of the world, you need to first be able to save and export it from your R Studio workspace. In this tutorial, I’m go...

The Success Paradox: Why even a little Bit of Luck often beats Skill

May 5, 2022 | Learning Machines

The skill-vs-luck debate never ceases to fascinate. Is it mainly skill, experience, hard work, and the “right” mindset that determines who is becoming successful, rich, or famous, or is it largely luck and fortunate circumstances? In this post, we will conduct an illuminating simulation to show that even a small ... [Read more...]

A short note on the startsWith function

May 4, 2022 | kjytay

The startsWith function comes with base R, and determines whether entries of an input start with a given prefix. (The endsWith function does the same thing but for suffixes.) The following code checks if each of “ant”, “banana” and “balloon” … Continue reading → [Read more...]

RStudio Community Monthly Events Roundup – May 2022

May 3, 2022 | RStudio | Open source & professional software for data science teams on RStudio

Photo by Nick Morrison on Unsplash Welcome to RStudio Community Monthly Events Roundup, where we update you on upcoming virtual events happening at RStudio this month. Missed the great talks and presentations from last month? Find them listed under I... [Read more...]

Storytelling in ggplot using rounded rectangles

May 3, 2022 | Albert Rapp

A standard ggplot output can rarely convey a powerful message. For effective data visualization you need to customize your plot. A couple of weeks ago, I showed you how. In this blog post, I will rebuild another great data viz from scratch. If you have read my original blog post, ...

truncated mixtures

May 3, 2022 | xi'an

A question on X validated about EM steps for a truncated Normal mixture led me to ponder whether or not a more ambitious completion [more ambitious than the standard component allocation] was appropriate. Namely, if the mixture is truncated to the interval (a,b), with an observed sample x of ...

{fusen} v0.4 – 14 developers tips and tricks

May 3, 2022 | Sébastien Rochette

You can read the original post in its original format on Rtask website by ThinkR here: {fusen} v0.4 – 14 developers tips and tricks If you think {fusen} is not for you because you’ve been building R packages your entire life without it, it’s time to give it a try! ...

Carry and Roll-Down on a Yield Curve using R code

May 3, 2022 | sang-heon lee

This post shows how to calculate a carry and roll-down on a yield curve using R. In the fixed income, the carry is a current YTM like a dividend yield in stock. But unlike stocks, even though market conditions remain constant over time, the r...

Announcing R/Medicine 2022!

May 3, 2022 | R Consortium

Announcing R/Medicine 2022! The conference will be fully virtual from August 23 through 26 and feature two days of workshops (included with the low registration fee!) and two days of keynotes featuring... The post Announcing R/Medicine 2022! appeared first on R Consortium.

Data Cleaning in R: 2 R Packages to Clean and Validate Datasets

May 3, 2022 | Dario Radečić

Real-world datasets are messy. Unless the dataset was created for teaching purposes, it’s likely you’ll have to spend hours or even tens of hours cleaning it before you can show it on a dashboard. That’s where two packages for data cleaning in R come into play – janitor ...

ML for the Lazy: Can AutoML Beat My Model?

May 2, 2022 | R | JLaw's R Blog

In this fourth (and hopefully final) entry in my “Icing the Kicker” series of posts, I’m going to jump back to the first post where I used tidymodels to predict whether or not a kick attempt would be iced. However, this time I see if using the h2o ...

New Workshops Series Kick-off

May 2, 2022 | Mirai Solutions

We are happy to announce our fourth series of workshops, to take place in 2022. After the success of the past series that took place at the end of last year we decided to offer again a series of workshops based on best development practices, R progra...

Announcing Sitewide Search on rstudio.com

May 1, 2022 | RStudio | Open source & professional software for data science teams on RStudio

Photo by Markus Winkler on Unsplash Sarah Lin is RStudio's Enterprise Information Manager. As many RStudio customers & open-source users know, we have a lot of websites. Historically, as the company grew, each department created its own website(... [Read more...]

Little useless-useful R functions – Finding total sum of all sub-arrays and sum of maximums

May 1, 2022 | tomaztsql

When it comes to O(N log(N)) time complexity functions, this is the right section. 🙂 Given an array of natural numbers (later, you will see, it can be real, or any other less complex system (rational, irrational)) and you create…Read more ›

Separating Code from Presentation in Jupyter Notebooks

April 30, 2022 | John Mount

One of the great conveniences of performing a data science style analysis using Jupyter is that Jupyter notebooks are literate containers that combine code, text, results, and graphs. This is also one of the pain points in working with Jupyter notebooks with partners or with source control. That is: Jupyter […]

Using R and {paws} to populate DynamoDB tables

April 29, 2022 | П о д а т о ц и

R and AWS DynamoDB In recent weeks we’ve been using AWS services for a few our projects. One of the things that came up was to populate DynamoDB tables with data from R. Of course, we didn’t have to do this from R, but most of our data ... [Read more...]

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