This is the first part of a blog post series on spatial machine learning with R.
The R language has a variety of packages for machine learning, and many of them can be used for machine learning tasks in a spatial context (spatial machine...
In March, one hundred eighty-two new packages made it to CRAN. Here are my Top 40 picks in sixteen categories: Agriculture, Archaeology, Biology, Climate Modeling, Computational Methods, Data, Ecology, Epidemiology, Genomics, Machine Learning, M...
Single-choice knowledge quiz question in which the correct flag for a country has to be selected from a list of flags.
Name:
flags
Type:
schoice
Related: capitals, countrycodes
Preview:
Which is the fl...
Cloze exercise in which two randomly-selected Cardinal vowels have to be described according to the three parameters vowel height, frontness-backness, and lip rounding.
Name:
vowels
Type:
cloze
Preview:
Desc...
1 Introduction
You trust R². Should you?
You proudly present a model with R² = 0.95. Everyone applauds.
But what if your model fails miserably on the next new data?
When building a statistical model, one of the first numbers analysts and...
Join our workshop on surveydown: An Open-Source, Markdown-Based Platform for Interactive and Reproducible Surveys, which is a part of our workshops for Ukraine series! Here’s some more info: Title:surveydown: An Open-Source, Markdown-Based Platform for Interactive and Reproducible Surveys Date: Thursday, May 29th, 18:00 – 20:00 CET (Rome, Berlin, Paris timezone) Speaker: ... [Read more...]
Exercise template for a very basic arithmetic task, namely computing the sum of two random numbers minus their difference.
Name:
sumdiff
Type:
num
Related: deriv
Preview:
By how much is the sum of the ...
I’m thrilled to announce the release of schematic, an R package that helps you (the developer) communicate data validation problems to non-technical users. With schematic, you can leverage tidyselect selectors and other conveniences to compare i... [Read more...]
Introduction
Dynamic Stochastic General Equilibrium (DSGE) models are a class of models which attempt to model the entire economy of a nation. The purpose of this post is to hand-code a DSGE model in R, fit it to data, and check that the results agree...
Dear rOpenSci friends, it’s time for our monthly news roundup! You can read this post on our blog. Now let’s dive into the activity at and around rOpenSci!
rOpenSci HQ
Event: Career Paths for U.S. Federal Data Scientists
rOpenSci and O... [Read more...]
At the Columbia workshop last week, Andre Wibisono presented work related with a recent arXival on the exponentially fast convergence of both unadjusted Langevin and proximal sampler algorithms under strong [definitely strong] log-concavity assumptions. The idea behind the proximal sampler is to target the demarginalised density by introducing an auxiliary ...
Zhenguo Zhang's Blog /2025/04/26/r-how-to-create-an-error-barplot-with-overlaid-points-using-ggplot/ -
library(ggplot2)
library(dplyr)
Sometimes you may want to create a plot with the following features:
a point to indicate the mean of a group
error...
This week the World Bank and International Monetary Fund “Spring Meetings” have been in progress, and a highlight is always the publication of the latest World Economic Outlook. This never fails to get a bit of press attention around the world. This ye...
In which I confront the way I read code in different languages, and end up
wishing that R had a feature that it doesn’t.
This is a bit of a thought-dump as I consider some code - please don’t take it
as a criticism of any design choices; ... [Read more...]
Problem
How to convert a string with format DDMMYYYY, to a date type using lazy queries. The problem is that base r function as.Date() does not have a translatable SQL equivalent. More information on this is detailed in this sql translation art... [Read more...]
Introduction
Open source provides an accessible platform for individuals to develop and refine their skills while collaborating on real-world projects. For tech enthusiasts with little to no experience, contributing to open-source projects is a...
Join our workshop on Shinyscholar – a template for producing reproducible analytic apps in R, which is a part of our workshops for Ukraine series! Here’s some more info: Title: Shinyscholar – a template for producing reproducible analytic apps in R Date: Thursday, June 5th, 18:00 – 20:00 CEST (Rome, Berlin, Paris timezone) Speaker: ... [Read more...]