Dan Oehm | Gradient Descending

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Tag: R

Data Science R

Alone R package: Datasets from the survival TV series

January 20, 2023 Daniel Oehm 0 Comments

I have been watching the survival TV series ‘Alone,’ where 10 survivalists are dropped in an extremely remote area and […]

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Data Science R

Select colours from an image in R with {eyedroppeR}

December 6, 2022 Daniel Oehm 0 Comments

There are fancy ways to extract colours from images but sometimes it’s easier if you could simply click on the […]

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Hex sticker for the cropcircles R package Data Science R

How to crop an image to a circle in R with {cropcircles}

September 11, 2022 Daniel Oehm 0 Comments

I hadn’t found a super-easy-you-don’t-have-to-think-about-it way to crop an image to a circle in R with a transparent background. There’s […]

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Data Science R

Evolve new colour palettes in R with evoPalette

June 7, 2020 Daniel Oehm 0 Comments

What’s that saying? Choice is the enemy of happiness, or something like that. There are so many colour palettes out […]

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Data Science R

Simulating data with Bayesian networks

October 15, 2019 Daniel Oehm 0 Comments

Bayesian networks are really useful for many applications and one of those is to simulate new data. Bayes nets represent […]

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Data Science R

Use more of your data with matrix factorisation

September 12, 2019 Daniel Oehm 0 Comments

Previously I posted on how to apply gradient descent on linear regression as an example. With that as background it’s […]

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R

Fun with progress bars: Fish, daggers and the Star Wars trench run

August 15, 2019 Daniel Oehm 0 Comments

If you’re like me, when running a process through a loop you’ll add in counters and progress indicators. That way […]

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Data Science R

Bayesian estimation of fatality rates and accidents involving cyclists on Queensland roads

May 23, 2019 Daniel Oehm 0 Comments

In my previous post I built a Shiny app mapping accidents on Queensland roads which was great at showing the […]

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Data Science R

Queensland road accidents mapped with Shiny and leaflet in R

May 2, 2019 Daniel Oehm 0 Comments

The Queensland government collects data on road accidents dating back to 1st January 2001 and details characteristics of the incident […]

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Data Science R

Applying gradient descent – primer / refresher

April 18, 2019 Daniel Oehm 0 Comments

Every so often a problem arises where it’s appropriate to use gradient descent, and it’s fun (and / or easier) […]

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Data Science R

Martingale strategies don’t work, but we knew that – Simulation analysis in R

April 5, 2019 Daniel Oehm 1 Comment

It’s generally accepted that Martingale betting strategies don’t work. But people still gravitate towards them because they are intuitive. I […]

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Data Science R

Adding Custom Fonts to ggplot in R

March 16, 2019 Daniel Oehm 2 Comments

ggplot – You can spot one from a mile away, which is great! And when you do it’s a silent […]

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Data Science R

The Most Amount of Rain over a 10 Day Period on Record

February 15, 2019 Daniel Oehm 0 Comments

Townsville, Qld, has been inundated with torrential rain and has broken the record of the largest rainfall over a 10 […]

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Data Science R

Synthesising Multiple Linked Data Sets and Sequences in R

February 3, 2019 Daniel Oehm 0 Comments

In my last post I looked at generating synthetic data sets with the ‘synthpop’ package, some of the challenges and […]

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Data Science R

Generating Synthetic Data Sets with ‘synthpop’ in R

January 13, 2019 Daniel Oehm 2 Comments

Synthpop – A great music genre and an aptly named R package for synthesising population data. I recently came across […]

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I'm pleased to be a contributor to R Bloggers. It is where you will find most of my posts featuring R.
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    Recent Posts
    • Alone R package: Datasets from the survival TV series
    • Select colours from an image in R with {eyedroppeR}
    • How to crop an image to a circle in R with {cropcircles}
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