Blog Archives

Discovering Shiny

April 8, 2015
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Discovering Shiny

It is not an experiment if you know it is going to work (Jeff Bezos) From time to time, I discover some of my experiments translated into Shiny Apps, like this one. Some days ago, I discovered one of these translations and I contacted the author, who was a guy from Vietnam called Vu Anh. … Continue reading...

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NASDAQ 100 Couples

March 25, 2015
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NASDAQ 100 Couples

Heaven, I’m in heaven, and my heart beats so that I can hardly speak, and I seem to find the happiness I seek, when we’re out together dancing cheek to cheek (Cheek To Cheek, Irving Berlin) There are about 6.500 available packages in CRAN repository. If I were a superhuman, able to learn one package … Continue reading...

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The World We Live In #4: Marriage Ages

March 16, 2015
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The World We Live In #4: Marriage Ages

It is time for women to stop being politely angry (Leymah Gbowee, Nobel Prize Peace Winner) Sometimes very simple plots give insight into we live in a world of differences. This plot shows the mean age at marriage for men and women across countries: Being a woman in some countries of this world must be a … Continue reading...

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Visual Complexity

March 10, 2015
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Visual Complexity

Oh, can it be, the voices calling me, they get lost and out of time (Little Black Submarines, The Black Keys) Last October I did this experiment about complex domain coloring. Since I like giving my posts a touch of randomness, I have done this experiment. I plot four random functions on the form p1(x)*p2(x)/p3(x) where pi(x) are polynomials … Continue reading...

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Silhouettes

March 2, 2015
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Silhouettes

Romeo, Juliet, balcony in silhouette, makin o’s with her cigarette, it’s juliet (Flapper Girl, The Lumineers) Two weeks ago I published this post for which designed two different visualizations. At the end, I decided to place words on the map of the United States. The discarded visualization was this other one, where I place the words over the silhouette … Continue reading...

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How Big Is The Vatican City?

February 24, 2015
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How Big Is The Vatican City?

Dici che il fiume trova la via al mare e come il fiume giungerai a me (Miss Sarajevo, U2) One way to calculate approximately the area of some place is to circumscribe it into a polygon of which you know its area. After that, generate coordinates inside the polygon and count how many of them fall into … Continue reading...

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The United States In Two Words

February 20, 2015
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The United States In Two Words

Sweet home Alabama, Where the skies are so blue; Sweet home Alabama, Lord, I’m coming home to you (Sweet home Alabama, Lynyrd Skynyrd) This is the second post I write to show the abilities of twitteR package and also the second post I write for KDnuggets. In this case my goal is to have an insight of … Continue reading...

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Mixing Waves

February 10, 2015
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Mixing Waves

Fill a cocktail shaker with ice; add vodka, triple sec, cranberry, and lime, and shake well; strain into a chilled cocktail glass and garnish with orange twist (Cosmopolitan Cocktail Recipe) This is a tribute to Blaise Pascal and Joseph Fourier, two of the greatest mathematicians in history. As Pascal did in his famous triangle, I generate a set of … Continue reading...

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Visualizing Home Ownership With Small Multiples And R

February 4, 2015
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Visualizing Home Ownership With Small Multiples And R

If everybody had an ocean, across the U.S.A., then everybody’d be surfin’ like California (Beach Boys, Surfin’ U.S.A.) I was invited to write a post for Domino Data Lab, a company based in California which provides a cloud-based machine learning platform which enables companies to use the power of the cloud to build analytical projects. I also … Continue reading...

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How e Can Help You To Find The Love Of Your Life

January 30, 2015
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How e Can Help You To Find The Love Of Your Life

Match.com will bring more love to the planet than anything since Jesus Christ (Gary Kremen, founder of Match.com) Charlie is a brilliant 39 years old mathematician living in Massachusetts. He lives alone and has dedicated his whole life to study. He has realized lately that theorems and books no longer satisfy him. Charlie has realized that … Continue reading...

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