R-bloggers

On May 25, 2020, George Floyd, an African American man, was killed by a White police officer in Minneapolis, Minnesota. His murder came shortly after the homicide of two other African Americans: Ahmaud Arbery, on February 23, 2020, and Breonna Taylor, on March 13, 2020. These horrible crimes sparked a movement and a wave of protest, ...

I will present here the code for creation of an interactive 3D visualisation of geospatial data, using rgl library, that allows export of the results into html. The dataset to visualize, is a 7 day track to Kilimajaro mountain (5895) in Tanzania.  Dataset contains latitude, longitude and elevation at sequence of timestamps. ...

Introduction In June 17, nice article for introducing new trial dataset were uploaded via R-bloggers. iris, one of commonly used dataset for simple data analysis. but there is a little issue for using it.  Too good. Every data has well-structured and most of analysis method works with iris very well. In ...

In my previous article, we analyzed the COVID-19 data of Turkey and selected the cubic model for predicting the spread of disease. In this article, we will show in detail why we selected the cubic model for prediction and see whether our decision was right or not. When we analyze ...

Hi there!  During the pandemic lockdown I was studying how N-mixture models to estimate animal abundance works. As a result, I wrote this small tutorial in R (Spanish) that helped me to better understand such models. Any correction or suggestion can be made by posting here or at [email protected]

A target-based categorical encoder for Statistical/Machine Learning (based on correlations) Part 3.

In our last post, we analyzed the performance of our portfolio, built using the historical average method to set return expectations. We calculated return and risk contributions and examined changes in allocation weights due to asset performance. We briefly considered whether such changes warranted rebalancing and what impact rebalancing might ...

A curio on X validated where an hybrid Metropolis-Hastings scheme involves a deterministic transform, once in a while. The idea is to flip the sample from one mode, ν, towards the other mode, μ, with a symmetry of the kind μ-α(x+μ) and ν-α(x+ν) with α a positive coefficient. Or the reciprocal, ...

Learn the fundamentals of R markdown in this in-depth tutorial, or simply use it as a quick reference guide and cheatsheet for R markdown formatting. The post Getting Started with R Markdown — Guide and Cheatsheet appeared first on Dataquest.

Introduction Making Multiple Plots on the Same Subject Preparing the Data Writing Functions to Generate Multiple Plots Making Custom Plot Themes Updating Plot Themes Introduction There are often situations when you need to perform repetitive plotting tasks. For example, you’d like to plot the same kind of data (e....

Daniel Hanson is a full-time lecturer in the Computational Finance & Risk Management program within the Department of Applied Mathematics at the University of Washington. His appointment followed over 25 years of experience in private sector quantitative development in finance and data science. One of the most time-consuming, tedious, and thankless tasks ...