---
title: "Field Notes on Software, Data & AI | Matthew Oldach"
url: "https://matthewoldach.com/writing/"
description: "Original technical writing on visualization, reproducible work, Fitbit gamification, UMAP and software experiments."
---

1.  [Start](https://matthewoldach.com/)
2.  Field Notes

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[PuttPulse](https://matthewoldach.com/work/#puttpulse)[Shiny-filteRs](https://matthewoldach.com/work/#shiny-filters)[Hinuhinu](https://matthewoldach.com/work/#hinuhinu)Map layers: Moisture · Solar · Ocean depth

[Supervised UMAP](https://matthewoldach.com/writing/supervised-umap/)[The Gamification of Fitbit](https://matthewoldach.com/writing/fitbit-gamification/)[Highlighting 3D Brain Regions](https://matthewoldach.com/writing/highlighting-3d-brain-regions/)

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Experiments, explanations, lessons

# Notes from the work.

Software, data and visualisation, explained through things I have worked on. Original dates stay attached to the work.

The complete writing archive

7 articles · Newest first

## The writing archive.

[

![Original supervised UMAP embedding plot with coloured clusters](https://matthewoldach.com/_astro/embedded-03.on8ItOPk_TIKgQ.webp)

Dimensionality reduction · R · Python 2023

### Supervised UMAP Slideshow

Read the article →

](https://matthewoldach.com/writing/supervised-umap/)[

![Original neural style transfer image experiment](https://matthewoldach.com/_astro/featured.qRi4S6-U_6IppO.webp)

Software · R 2019

### TensorFlow CNN for Fast Style Transfer

Read the article →

](https://matthewoldach.com/writing/faststyletransfer/)[

![Original illustration from the R profile article](https://matthewoldach.com/_astro/featured.4heqLl3i_1czwok.webp)

Software · R 2019

### Step aside Cron, this is a job for .Rprofile & logfiles!

Read the article →

](https://matthewoldach.com/writing/rprofile/)[

![Original artwork from the data wrangling article](https://matthewoldach.com/_astro/featured.CvN3Dyo9_rnyGz.webp)

Software · R 2019

### Image-grid with Ninjutsu CSS theme in Xaringan

Read the article →

](https://matthewoldach.com/writing/ninjutsu/)[

![Original artwork from the reproducible workflow article](https://matthewoldach.com/_astro/featured.CNVmdmG2_rosPz.webp)

Software · R 2019

### Getting Started with Drake in R

Read the article →

](https://matthewoldach.com/writing/drake/)[

![Green pixel-art scene from the original Fitbit gamification project](https://matthewoldach.com/_astro/featured.qIbulrdU_gugi2.webp)

APIs · R · Gamification 2018

### The Gamification of Fitbit: How An API Provided The Next Level of tRaining

Read the article →

](https://matthewoldach.com/writing/fitbit-gamification/)[

![Original brain rendering with a small red highlighted region](https://matthewoldach.com/_astro/featured.dcGZhJVU_rALMy.webp)

Visualisation · R · MATLAB 2018

### How to Highlight 3D Brain Regions

Read the article →

](https://matthewoldach.com/writing/highlighting-3d-brain-regions/)