Articles by Pachá

RStudio on Kubernetes

February 1, 2022 | Pachá

About A few years ago I had an external drive that got damaged. I was able to repair it and I found many materials I thought were lost forever. Amongst nice Shiny apps, I found some codes to run RStudio on Kubernetes. After some minimal changes, I...
[Read more...]

Using Arrow with Shiny

January 2, 2022 | Pachá

This post is an adaptation from Using databases with Shiny. Shiny apps are R’s answer to building interface-driven applications that help expose important data, metrics, algorithms, and more with end-users. However, the more interesting work that y... [Read more...]

Using the R-Universe

August 25, 2021 | Pachá

Using the R-Universe The R-Universe, created by Jeroen Ooms, provides a very simple way to create personal CRAN-like repos, which means a way to show your collection of tools in use to the community. In addition, you can use it to publish articles by using rmarkdown, an R package that ... [Read more...]

Usando el R-Universe

August 25, 2021 | Pachá

Usando el R-Universe El R-Universe, creado por Jeroen Ooms, proporciona una forma muy sencilla de crear repositorios personales tipo CRAN, lo que significa una forma de mostrar su colección de herramientas en uso a la comunidad. Además, puede usarlo para publicar artículos usando rmarkdown, un paquete de ... [Read more...]

Wes McKinney InteRview

June 5, 2021 | Pachá

I interviewed Wes McKinney, the creator of pandas, and author of Python for Data Analysis. This interview was conducted as a way to provide something illustrative about Open Source Software now that I am committing actively to the arrow R package, ... [Read more...]

Microeconomic Theory and Linear Regression (Part 1)

April 1, 2021 | Pachá

Introduction This is a summary of a very old collection of materials that I used as teaching assistant (before 2017). Among those materials I found some class notes from Arne Henningsen, the author of micEcon R package. I’ll use that package and some others to show some concepts from Microeconomic ...
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Hyperplane Separation Theorem

February 20, 2021 | Pachá

A bit of context to put this on my stats blog: I’m reading Real Analysis books again as a part of my studies. I used to visit Kim C. Border site from time to time to read his excellent materials, and now I read that he passed away. I ... [Read more...]

SQL Databases for Students and Educators

September 17, 2020 | Pachá

I’ve created the site db-edu.pacha.dev to offer free access to SQL databases. Publicly accessible databases often impose query limits or require registration. Even when I maintain public and limit-free APIs, I never wanted to host a public database ... [Read more...]

SQL Databases for Students and Educators

September 17, 2020 | Pachá

I’ve created the site db-edu.pacha.dev to offer free access to SQL databases. Publicly accessible databases often impose query limits or require registration. Even when I maintain public and limit-free APIs, I never wanted to host a public database ... [Read more...]

A Crash Course on PostgreSQL for R Users

August 8, 2020 | Pachá

Updated on 2020-09-19: I changed the “Creating tables” section. In my original script I used copy_to(), which creates (unique) indexes, while here I wrote dbWriteTable() when I adapted my code, which doesn’t create indexes and only adds records. Upd...
[Read more...]

A Crash Course on PostgreSQL for R Users

August 8, 2020 | Pachá

Updated on 2020-09-19: I changed the “Creating tables” section. In my original script I used copy_to(), which creates (unique) indexes, while here I wrote dbWriteTable() when I adapted my code, which doesn’t create indexes and only adds records. Upd...
[Read more...]
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