#225–226PuzzlesAuthor: ExcelBIAll files (xlsx with puzzle and R with solution) for each and every puzzle are available on my Github. Enjoy.Puzzle #225Sometimes we have nice tables with so called tidy data, where each observation mean one row. But this ...

Introduction As a beginner R programmer, you may often find yourself needing to manipulate data frames. One common task is adding prefixes to column names, which can be useful for organizing variables, improving readability, or avoiding naming ...

R and Python consoles + JupyterLite in www.techtonique.net

Puzzles no. 559–563PuzzlesAuthor: ExcelBIAll files (xlsx with puzzle and R with solution) for each and every puzzle are available on my Github. Enjoy.Puzzle #559Sometimes we need to make work on columns. It technically just like working on lists, and l...

Think of Shiny for Python custom modules as reusable components. You write the logic once, make it as tweakable as possible, and then reuse it throughout your application. As it turns out, creating custom modules in Shiny for Python is simple enough, but there are some new concepts you need ...

You can read the original post in its original format on Rtask website by ThinkR here: Beyond Functions: How to Enrich an R Package with Data As package developers, we often focus on custom functions, their documentation, and unit testing. To provide a more complete user experience, it can be ...

Adding a suffix to column names in R is a common task that can help in organizing and managing data frames, especially when dealing with multiple datasets. This guide will walk you through the process using base R functions, making it accessible...

Gradient boosting with any regression algorithm in Python package mlsauce. Part2, R version

As package developers, we often focus on custom functions, their documentation, and unit testing. To provide a more complete user experience, it can be helpful to include data within the package. Here’s everything you need to know! Short on tim...

Methods for comparing spatial patterns in raster data This is the first part of a blog post series on comparing spatial patterns in raster data. Comparison of spatial patterns in raster data is a part of many types of spatial analysi...

When looking for a copula I could simulate from (rather than the Gaussian copula), I found an algorithm for the Ali–Mikhail–Haq copula that was proposed by Kumar (2010) as reproduced above. But the method seriously fails in that the range of (U,V) resulting from the simulation does not ...

Last week, we had an “mid-term” exam, for our introduction to statistical learning course.  The question is simple: consider three points, , here Consider here some linear models, estimated using least square techniques, what would be the leave-one-out cross-validation MSE ? I like this exercise since we can compute everything easily, by ...

If you’re a biostatistician or clinical software developer, you’ve probably felt the weight of trying to meet GxP standards while navigating the FDA/EMA submission process. It’s not just about getting the software right—it’s about ensuring safety, quality, and compliance, all under tight timelines. It ...

Linux is a powerful operating system that offers a wide range of tools for managing files and processes. One of the most essential concepts in Linux is I/O redirection, which allows users to control the flow of data between commands and files. T...

Summary Why? How? Examples [view raw Rmd] Summary This post introduces the POLYGON FULL geometry, new in sf 1.0-18 which appeared on CRAN Today. Why? Polygons delineate a two-dimensional bound area. The OGC simple feature access standard...

Hey there, ready to get your R code under control? Whether you’re working on your own or in a small team, managing your code can sometimes feel like juggling too many things at once. But don’t worry — there’s an easy way to stay on top of everything. ...

I have been asked recently by a colleague of mine how to extract the variance from a model estimated using adam() function from the smooth package in R. The problem was that that person started reading the source code of the forecast.adam() and got lost between the lines (this ...