Blog Archives

A Little Present For Coldplay

November 3, 2014
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A Little Present For Coldplay

Gravity, release me, and don’t ever hold me down, now my feet won’t touch the ground (Coldplay, Life In Technicolor II) Inspired by this nice post and by this cover of a Coldplay’s album: I have dared to do this using ggplot, polar coordinates and Google Fonts: Coldplay: feel free to use it for some future album.

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Size Doesn’t Matter

October 26, 2014
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Size Doesn’t Matter

An invisible red thread connects those destined to meet, regardless of time, place or circumstances. The thread may stretch or tangle, but never break (Ancient Chinese Legend) I use to play once a year with my friends to Secret Santa (in Spain we call it Amigo Invisible). As you can read in Wikipedia: Secret Santa is

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The World We Live In #2: To Study Or To Work

October 19, 2014
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The World We Live In #2: To Study Or To Work

I was getting ready for school and about to wear my uniform when I remembered that our principal had told us not to wear uniforms. So I decided to wear my favorite pink dress (Malala Yousafzai) After reading the diary of a Pakistani schoolgirl and Malala’s history, there is no doubt of being in front

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Beautiful Curves: The Harmonograph

October 12, 2014
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Beautiful Curves: The Harmonograph

Each of us has their own mappa mundi (Gala, my indispensable friend) The harmonograph is a mechanism which, by means of several pendulums, draws trajectories that can be analyzed not only from a mathematical point of view but also from an artistic one. In its double pendulum version, one pendulum moves a pencil and the

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The World We Live In #1: Obesity And Cells

October 6, 2014
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The World We Live In #1: Obesity And Cells

Lesson learned, and the wheels keep turning (The Killers – The world we live in) I discovered this site with a huge amount of data waiting to be analyzed. The first thing I’ve done is this simple graph, where you can see relationship between cellular subscribers and obese people. Bubbles are countries and its size

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Complex Domain Coloring

September 30, 2014
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Complex Domain Coloring

Why don’t you stop doodling and start writing serious posts in your blog? (Cecilia, my beautiful wife) Choose a function, apply it to a set of complex numbers, paint  the result using the HSV technique and be ready to be impressed because images can be absolutely amazing. You only need ggplot2 package and your imagination. This is what happens

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PageRank For SQL Lovers

September 24, 2014
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PageRank For SQL Lovers

If you’re changing the world, you’re working on important things. You’re excited to get up in the morning (Larry Page, CEO and Co-Founder of Google) This is my particular tribute to one of the most important, influential and life-changer R packages I have discovered in the last times: sqldf package. Because of my job, transforming

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Space Invaders

September 17, 2014
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Space Invaders

I burned through all of my extra lives in a matter of minutes, and my two least-favorite words appeared on the screen: GAME OVER (Ernest Cline, Ready Player One) Inspired by the book I read this summer and by this previous post, I decided to draw these aliens: Do not miss to check this indispensable document to choose

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Princess Jasmine’s Trick

September 12, 2014
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Princess Jasmine’s Trick

I’m history! No, I’m mythology! Nah, I don’t care what I am; I’m free hee! (Genie, when he is released from the magical oil lamp by Aladdin) A long time ago, in a kingdom far away, lived a beautiful princess named Jasmine. There also lived a very rich and evil wizard named Jafar, who was

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Looking For Life

September 4, 2014
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Looking For Life

  Machines take me by surprise with great frequency (Alan Turing) Imagine a 8×8 grid in which cells can be alive (black colored) or empty (light gray colored): As with the One-dimensional Cellular Automata, the next state of a cell is a function of the states of the cell’s nearest neighbors (the only neighbors that

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