## Gosset part 2: small sample statistics

### Scientific brewing at scale

Simulation was the key to to achieve world beer dominance. ‘Scientific’ Brewing at scale in the early 1900s Beer bottles cheers This post is an explainer about the small sample experiments performed by William S. Gosset. This post contains some R code that simulates his simulations1 and the resulting determination of the ideal sample size for inference. If you brew your own beer, or if you want to know how many samples you need to say something useful about your data, this post is for you. [Read More]

## William Sealy Gosset one of the first data scientists

### The father of the t-distribution

I think William Sealy Gosset, better known as ‘Student’ is the first data scientist. He used math to solve real world business problems, he worked on experimental design, small sample statistics, quality control, and beer. In fact, I think we should start a fanclub! And as the first member of that fanclub, I have been to the Guinness brewery to take a picture of Gosset’s only visible legacy there. W. S. [Read More]

## Setting up CSP on your hugo (+netlify) site

I recently got a compliment about having a content security policy (CSP) on my blog. But I’m not special, you can have one too! In this post I will show you how I created this policy and how you can too. I’m using the service report-uri.com which automates a lot the work. This is specific for building a hugo site using netlify. I am absolutely no expert and so this is mostly a description of what I did. [Read More]

## Quick post - detect and fix this ggplot2 antipattern

Recently one of my coworkers showed me a ggplot and although it is not wrong, it is also not ideal. Here is the TL:DR : Whenever you find yourself adding multiple geom_* to show different groups, reshape your data In software engineering there are things called antipatterns, ways of programming that lead you into potential trouble. This is one of them. I’m not saying it is incorrect, but it might lead you into trouble. [Read More]

## Graphing My Daily Phone Use

How many times do I look at my phone? I set up a small program on my phone to count the screen activations and logged to a file. In this post I show what went wrong and how to plot the results. The data I set up a small program on my phone that counts every day how many times I use my phone (to be specific, it counts the times the screen has been activated). [Read More]

## Logging my phone use with tasker

In this post I’ll show you how I logged my phone use with tasker, in a follow up post I’ll show you how I visualized that. I had a great vacation last week but relaxing in Spain I thought about my use of technology and became a bit concerned with how many times I actually look at my phone. But how many times a day do I actually look at my phone? [Read More]

## Running an R script on heroku

### Automate alllll the things!

In this post I will show you how to run an R script on heroku every day. This is a continuation of my previous post on tweeting a death from wikidata. Why would I want to run a script on heroku? It is extremely simple, you don’t need to spin up a machine in the cloud on AWS, Google, Azure or Nerdalize. You can just run the script and it works. [Read More]

## Tweeting daily famous deaths from wikidata to twitter with R and docker

### A tweet a day keeps the insanity at bay

In this explainer I walk you through the steps I took to create a twitter bot that tweets daily about people who died on that date. I created a script that queries wikidata, takes that information and creates a sentence. That sentence is then tweeted. For example: A tweet I literally just send out from the docker container I hope you are has excited as I am about this project. [Read More]

## interactive ggplot with tooltip using plotly

### tldr: wrap ggplotly around ggplot and add info in aes()

A quick Random R thing I use a lot, recently learned, and I want you to know it too. In this post I’ll show you how to make a quick interactive plot with ggplot and plotly, so that values are displayed when you hover your mouse over it. Why would you want this? If you are exploring the data, you want some quick insights into which values are where. [Read More]

## Use purrr to feed four cats

### Replacing a for loop with purrr::map_*

Use purrr to feed four cats In this example we will show you how to go from a ‘for loop’ to purrr. Use this as a cheatsheet when you want to replace your for loops. Imagine having 4 cats. (like this one:) Four real cats who need food, care and love to live a happy life. They are starting to meow, so it’s time to feed them. Our real life algorithm would be: [Read More]