Blog Archives

The Hype Bubble Map for Dog Breeds

April 18, 2016
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The Hype Bubble Map for Dog Breeds

In the whole history of the world there is but one thing that money can not buy… to wit the wag of a dog’s tail (Josh Billings) In this post I combine several things: Simple webscraping to read the list of companion dogs from Wikipedia. I love rvest package to do these things. Google Trends … Continue reading...

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The Coaster Maker by Shiny

April 4, 2016
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The Coaster Maker by Shiny

The word you invented is well formed and could be used in the Italian language (The Accademia della Crusca regarding to the word “Petaloso”, recently invented by an eight-year-old boy) Are you tired of your old coasters? Do you like to make things by your own? Do you have a PC and a printer at … Continue reading...

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Sunflowers

March 14, 2016
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Sunflowers

The world is full of wonderful things, like sunflowers (Machanguito, my islander friend) Sunflower seeds are arranged following a mathematical pattern where golden ratio plays a starring role. There are tons of web sites explaining this amazing fact. In general, the arrangement of leaves on a plant stem are ruled by spirals. This fact is … Continue reading...

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A Silky Drawing and a Tiny Experiment

March 1, 2016
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A Silky Drawing and a Tiny Experiment

It is a capital mistake to theorize before one has data (Sherlock Holmes, A Scandal in Bohemia) One of my favorite entertainments is drawing things: crazy curves, imaginary flowers, celestial bodies, fractalic acacias … but sometimes I wonder myself if these drawings result interesting to whom arrive to my blog. One way to define interesting could … Continue reading...

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The Gender of Big Data

February 17, 2016
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The Gender of Big Data

When I grow up I want to be a dancer (Carmen, my beautiful daughter) The presence of women in positions of responsibility inside Big Data companies is quite far of parity: while approximately 5o% of world population are women, only 7% of CEOs of Top 100 Big Data Companies are. Like it or not, technology … Continue reading...

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The Unbereable Insolence of Prime Numbers or (Playing to be Ulam)

February 10, 2016
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The Unbereable Insolence of Prime Numbers or (Playing to be Ulam)

So rock me mama like a wagon wheel, rock me mama anyway you feel (Wagon Wheel, Old Crow Medicine Show) This is the third iteration of Hilbert curve. I placed points in its corners. Since the curve has beginning and ending, I labeled each vertex with the order it occupies:Dark green vertex are those labeled … Continue reading...

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Going Bananas With Hilbert

February 1, 2016
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Going Bananas With Hilbert

It seemed that everything is in ruins, and that all the basic mathematical concepts have lost their meaning (Naum Vilenkin, Russian mathematician, regarding to the discovery of Peano’s curve) Giuseppe Peano found in 1890 a way to draw a curve in the plane that filled the entire space: just a simple line covering completely a … Continue reading...

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A Checkpoint Of Spanish Football League

January 20, 2016
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A Checkpoint Of Spanish Football League

I am an absolute beginner, but I am absolutely sane (Absolute Beginners, David Bowie) Some time ago I wrote this post, where I predicted correctly the winner of the Spanish Football League several months before its ending. After thinking intensely about taking the risk of ruining my reputation repeating the analysis, I said “no problem, … Continue reading...

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Climatic Change At A Glance

January 7, 2016
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Climatic Change At A Glance

Mmm. Lost a planet, Master Obi-Wan has. How embarrassing (Yoda, Attack Of The Clones) Some time ago I published this post in KDnuggets in which I analyze historical temperatures to show how we are gradually heading toward a warmer planet. Simple data science to obtain a simple (and increasingly accepted) conclusion: the global warming is … Continue reading...

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Phyllotaxis By Shiny

December 14, 2015
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Phyllotaxis By Shiny

Antonio, you don’t know what empathy is! (Cecilia, my beautiful wife) Spirals are nice. In the wake of my previous post I have done a Shiny app to explore patterns generated by changing angle, shape and number of points of Fermat’s spiral equation. You can obtain an almost infinite number of images. This is just … Continue reading...

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