juan reyero Let me help | Technology | Software | Physics and math | About
As a token of appreciation of your interest, I will give you a voucher for a free high-quality personalized star chart (see the story.)

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tree Engineer and freelance programmer. On software, math, science and making things, with some economics.

The blog keeps track of my articles. I may be able to help you with your programming, data analysis, or innovation effort.

Ongoing projects

My last project: GreaterSkies builds a high-quality, personalized chart of the sky. Now on-line, it will make a great present for new-born babies and birthdays (también en castellano, póster del cielo como regalo de cumpleaños). The graphic design is by Mireya Caparrós, designer.

At HP I am leading the re-architecture of a 10-year-old, 600k-line piece of code in Python and C++.

My current free-lance project: writing and deploying a Naïve Bayes Classifier in Python for a company that makes and analyzes surveys.

Also check out my iOS application, GeoPostr: save notes and photos associated to geographic coordinates, keep them on the cloud as a Fusion Table and with PicasaWeb, and share them with Facebook and Twitter.

I have made a trivial epub to mobi conversion script, triggered by an article at aLibro, libros electrónicos en castellano.

Recent publications

This year we presented HANS, a new method of image processing for printing, at the Color Imaging Conference in San José. It was a privilege to work with Ján and Peter Morovič.

US Patents


I write about technology development, software, science, math and (sometimes) economics. Don't hesitate to contact me. See my full résumé.