Tag: proj

May 23 2010

Μετατροπή συντεταγμένων μεταξύ WGS 84 (π.χ. GPS) και ΕΓΣΑ87 (GGRS87, GR87, ελληνικό σύστημα)

Οι συντεταγμένες που γνωρίζουμε από τους χάρτες και τα συστήματα GPS ακολουθούν το πρότυπο WGS 84. Στην Ελλάδα σε κάποιες υπηρεσίες γίνεται χρήση του ΕΓΣΑ87 (GGRS87). Πως κάνουμε τη μετατροπή μεταξύ WGS 84 και ΕΓΣΑ87 (GGRS87, GR87); Επιβεβαιώνουμε ότι έχουμε εγκαταστήσει το πακέτο proj (sudo apt-get install proj). Για το proj, ο κωδικός για WGS84 …

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Permanent link to this article: https://blog.simos.info/%ce%bc%ce%b5%cf%84%ce%b1%cf%84%cf%81%ce%bf%cf%80%ce%ae-%cf%83%cf%85%ce%bd%cf%84%ce%b5%cf%84%ce%b1%ce%b3%ce%bc%ce%ad%ce%bd%cf%89%ce%bd-%ce%bc%ce%b5%cf%84%ce%b1%ce%be%cf%8d-wgs-84-%cf%80-%cf%87-gps/

Jan 07 2009

Playing with Git

Git is a version control system (VCS) software that is used for source code management (SCM). There are several examples of VCS software, such as CVS and SVN. What makes Git different is that it is a distributed VCS, that is, a DVCS. Being a DVCS, when you use Git you create fully capable local …

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Permanent link to this article: https://blog.simos.info/playing-with-git/

Jun 26 2008

What to see in OpenOffice.org 3.1 Writer;

At the User Experience mailing list at OpenOffice.org there is a thread to discuss & plan what new things should make it to OpenOffice.org 3.1. Here is the first email, From: Christian Jansen Date: Wed, Jun 25, 2008 at 8:35 AM Hi, OpenOffice.org 3.1 planning will start soon, thus I’d like to collect some ideas …

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Permanent link to this article: https://blog.simos.info/what-to-see-in-openofficeorg-31-writer/

Jun 11 2008

ANTLR grammar for XKB, and Relax NG schema (draft)

I completed the ANTLRv3 grammar for symbols/ configuration files of XKB. The grammar can parse and create the abstract syntax tree (AST) for all keyboard layouts in xkeyboard-config. ANTLRv3 helps you create parsers for domain specific languages (DSL), an example of which is the configuration files in XKB. Having the ANTLRv3 grammar for a configuration …

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Permanent link to this article: https://blog.simos.info/antlr-grammar-for-xkb-and-relax-ng-schema-draft/

May 28 2008

Looking into the symbol files

In the previous post, we talked about the ANTLR grammar that parses the XKB layout files. The grammar is available at http://code.google.com/p/keyboardlayouteditor/source/browse. I’ll rather push to the freedesktop repository once the project is completed. Now it’s too easy for me, just doing svn commit -m something. Below you can see the relevant layout files for …

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Permanent link to this article: https://blog.simos.info/looking-into-the-symbol-files/

Apr 30 2008

Keyboard Layout Editor GSOC project

I got accepted for a GSOC project with the X.Org Foundation. My mentor is Sergey Udaltsov and I look forward working with him. The project is about creating a Keyboard Layout Editor, that can be used to edit XKB files with a nice GUI. I will be blogging about these from here (fdo category at …

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Permanent link to this article: https://blog.simos.info/keyboard-layout-editor-gsoc-project/

Feb 29 2008

FOSDEM ’08, summary and comments

I attended FOSDEM ’08 which took place on the 23rd and 24th of February in Brussels. Compared to other events, FOSDEM is a big event with over 4000 (?) participants and over 200 lectures (from lightning talks to keynotes). It occupied three buildings at a local university. Many sessions were taking place at the same …

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Permanent link to this article: https://blog.simos.info/fosdem-08-summary-and-comments/

Dec 03 2007

The Google Highly Open Participation Contest

One more initiative by Google to reach out to the community and promote free and open-source software is the The Google Highly Open Participation Contest 2007/2008. The purpose of the competition is to enable young students older than 13 years old but have not entered yet the tertiary education, to participate in open-source development. To …

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Permanent link to this article: https://blog.simos.info/the-google-highly-open-participation-contest/

Nov 04 2007

StixFonts, finally available (beta)!

The STIX Fonts project (website) has been developing for over 10 years a font suitable to be used in academic publications. It boasts support from Elsevier, IEEE and other academic publishers or associations. A few days ago, they published a beta version of the font in an effort to get public feedback. The beta period …

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Permanent link to this article: https://blog.simos.info/stixfonts-finally-available-beta/

Oct 07 2007

One-line hardware support (USB Wireless Adapter)

I got recently a USB Wireless Adaptor, produced by Aztech. It was a good buy for several reasons: It advertised Linux support It was affordable It had good quality casing; you can step on it and it won’t break It had the Penguin on the box and was really really cheap When I plugged it …

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Permanent link to this article: https://blog.simos.info/one-line-hardware-support-usb-wireless-adapter/

Aug 05 2007

Greek OLPC localisation status

The Greek OLPC localisation effort is ongoing and here is a report of the current status. For discussions, reading discussion archives and commenting, please see the Greek OLPC Discussion Group. We are localising two components, the UI (User Interface) and applications of the OLPC, and the main website at http://www.laptop.org/ The UI is currently being …

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Permanent link to this article: https://blog.simos.info/greek-olpc-localisation-status/

Jul 23 2007

Important MO file optimisation for en_* locales, and partly others

During GUADEC, Tomas Frydrych gave a talk on exmap-console, a cut-down version of exmap that can work well on mobile devices. During the presentation, Tomas showed how to use the tool to find the culprits in memory (ab)use on the GNOME desktop. One issue that came up was that the MO files taking up space …

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Permanent link to this article: https://blog.simos.info/important-mo-file-optimisation-for-en_-locales-and-partly-others/

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