iiinova — where your digital self keeps evolving

Dagmar Fraser @dagmarfraser.bsky.social · 07/02/2026

Original post: universeodon.com/@Edmonds_Sca...

Dagmar Fraser @dagmarfraser.bsky.social · 28/12/2025

I still have a copy of this... the Reader's Digest Great Encyclopaedic Dictionary. I spent many an hour in the specific dictionaries of Greek Myth, Heraldry, Science and the Etymology of Names in volume 3.

Image of a set of the Reader's Digest Great Encyclopaedic Dictionary - Three Volumes Bound in Red. A to L, M to Z a final volume on Religions, Greek Myth, Science, Heraldry, and the etymology of Given Names

320

Dagmar Fraser @dagmarfraser.bsky.social · 18/12/2024

Running this reveals a whole gallery of hidden images! 🖼️ This is steganography - hiding data within data! 🔐 The MATLAB developers embedded these images in the binary structure of the original data. 🤯 There is a full explanation of these images here - blogs.mathworks.com/steve/2006/1...

120

Dagmar Fraser @dagmarfraser.bsky.social · 18/12/2024

Did you know MATLAB has secret images hidden in plain sight? 🔍 Type `image` in your command window. You'll see a mysterious upside-down boy's face in blue tones. But that's just the beginning... 🎯 🤫 #MATLAB #MATLABTAmbassador

250

Dagmar Fraser @dagmarfraser.bsky.social · 10/12/2024

🧢 Swag alert! Everyone loved the #MATLAB merch: Baseball caps (pictured!) Frisbees T-shirts Playing cards (4/5)

110

Dagmar Fraser @dagmarfraser.bsky.social · 10/12/2024

🍕 The pizza spread was epic! Hawaiian Texas BBQ Vegetarian Supreme Chicken, Mushrooms & Olives Pepperoni Tandoori Hot Just Cheese

100

Dagmar Fraser @dagmarfraser.bsky.social · 10/12/2024

Thanks to all who joined for my inaugural #MATLAB On Ramp, on Friday at the University of Birmingham! (1/5)

151

Dagmar Fraser @dagmarfraser.bsky.social · 26/11/2024

💻 EEGLAB is an open-source analysis toolbox, amongst the most widely used packages for EEG research for over two decades. A recent survey shows a whopping 63% of researchers have used it for ERP plotting…. But watch out for newcomers! 📈

100

Dagmar Fraser @dagmarfraser.bsky.social · 21/11/2024

On Mac/PC I did need to quit Zotero occasionally when messing in Word. I found dis-abling this made my crashes much more manageable.

110

Dagmar Fraser @dagmarfraser.bsky.social · 05/11/2024

❤️ But like all open source projects, PTB depends on a small team of dedicated developers. For just 200€/year, you can support PTB and its wonderfully irascible maintainer Mario Kleiner (www.psychtoolbox.net#service)

110

Dagmar Fraser @dagmarfraser.bsky.social · 05/11/2024

📊 By 2018, PTB had been downloaded 285,897 times and appears in thousands of papers annually. From humble beginnings to a cornerstone of psychological science!

100

Dagmar Fraser @dagmarfraser.bsky.social · 05/11/2024

🌉 The breakthrough? PTB let researchers write simple high-level code while maintaining millisecond-precise control of display & sound hardware. Like having a research assistant who speaks both English and machine code fluently!

100

Dagmar Fraser @dagmarfraser.bsky.social · 29/10/2024

📊 Delightful new preprint reveals a meta *power law* in physics! The mathematical symbols & operators we use to describe nature's laws... follow their own mathematical pattern! (image from New Scientist) #MATLAB #MATLABAmbassador #academicsky #psychology #psychscisky

140

Dagmar Fraser @dagmarfraser.bsky.social · 22/10/2024

What lies between a function and its derivatives? In kinematic terms; between Position and Velocity? Between Velocity and Acceleration? We can see a pattern in d^N/dt^N... but what if N was 0.5? 🤔 #MATLAB #MATLABAmbassador #academicsky #psychology #psychscisky

160

Dagmar Fraser @dagmarfraser.bsky.social · 15/10/2024

Other noises? Yes... if we generalise an exponent α; 1/f^-2 Blue Noise 1/f^-1 Violet Noise 1/f^0 White Noise 1/f^1 Pink Noise (a common behaviour in biological systems!) 1/f^2, Red Noise / Brownian Noise (drunkard’s walk!) 1/f^2+ sometimes called Black Noise.

110

Dagmar Fraser @dagmarfraser.bsky.social · 15/10/2024

Making all the right noises... MATLAB has wgn for White (Gaussian) Noise and pinknoise for Pink. The power spectral density (PSD) of Pink is 1/f and so drops off as f increases (-10dB/dec as pictured). #MATLAB #MATLABAmbassador #academicsky #psychology #psychscisky

100

Dagmar Fraser @dagmarfraser.bsky.social · 08/10/2024

You can keep on going (in both directions!) as noted in this delightfully retro Web 0.1 page - www.mathnstuff.com/math/spoken/...

100

Dagmar Fraser @dagmarfraser.bsky.social · 01/10/2024

this is by Dr David Wilby now an RSE with Antarctic Survey! www.davidwilby.dev but formerly x.com/RSE_Sheffield

110

Dagmar Fraser @dagmarfraser.bsky.social · 01/10/2024

There is an excellent in-depth guide to that and more in "A concise guide to reproducible MATLAB projects" to make folders for disparate elements of your code rse.shef.ac.uk/blog/2022-05...

100