About me

  • I was born on 1974, in Spain, and have lived there most of my life, except for five wonderful years in Germany and several stays abroad.
  • I have studied Physics, did the Ph.D on that and have since worked as researcher in several institutions.
  • I now live in Madrid and work at the Spanish Research Council.
  • Programming has alwas been a passion. I have worked on multiple projects, all of them related to free software.
  • Hobbies: playing the guitar, sports, reading, languages and travelling.


  • Do no take this seriously. It is just a space to collect information, texts, photos and other stuff that me or somebody else might find useful.
  • Everything that I write here reflects my own personal opinion or experiences and is in no way endorsed by my employer or colleagues that might be mentioned in this blog.
  • All the information provided here comes without any kind of warranty. Use it judiciously and critically.

Recent programming items

  • Optimize a PDF or extract part of it with ghostscript I am writing some largish lecture notes, which now are around 120 pages long. The problem with this document is that it is full of attractive images that are needed ...
    Posted Nov 9, 2015, 11:59 AM by Juan Jose Garcia-Ripoll
  • Booking a trip in a Govt. facility Working for CSIC you are subject to the Goverment rules for travelling. This can be quite a lot of fun.
    Posted Oct 29, 2015, 12:52 PM by Juan Jose Garcia-Ripoll
  • Catching up with the ArXiv For those of you who are back from a somewhat longish holidays, I remind you about my page for reading the arXiv by dates, which may help you keeping up ...
    Posted Aug 31, 2015, 5:28 AM by Juan Jose Garcia-Ripoll
Showing posts 1 - 3 of 12. View more »

Recent musings

  • About the difficulty of portraits It has always puzzled me the difficulty of drawing faces. This difficulty lays on two fronts: It lays on the draftsman. The person drawing is affected by serious psicological constraints ...
    Posted Sep 15, 2015, 1:01 AM by Juan Jose Garcia-Ripoll
  • La Residencia de Estudiantes If you visit our research group at the Spanish Research Council campus in Serrano Street, you will visit also a place with a rather old history of struggles to foster ...
    Posted Aug 17, 2015, 1:12 AM by Juan Jose Garcia-Ripoll
  • Spanish vintage flex pen? I found this little gem of a vintage pen that needs some restoration work. The pen is probably made of celluloid, it is a self-filler and needs a new ...
    Posted Aug 16, 2015, 8:15 AM by Juan Jose Garcia-Ripoll
  • Frankenpen: Camlin Rego + Gillot 303 Today was a day for experimentation and I tried both something stupid and amazing. Inspired by this video, I searched among the least used pens that I had and among ...
    Posted Aug 16, 2015, 8:02 AM by Juan Jose Garcia-Ripoll
  • Testing fountain pens for tone & value creation In my struggle of learning how to properly draw with pen and ink, I keep looking for the right tools and the right methods, which is kind of hard when ...
    Posted Aug 10, 2015, 11:02 AM by Juan Jose Garcia-Ripoll
Showing posts 1 - 5 of 9. View more »