2012-02-04 // An object oriented approach to animate google maps markers
Goal
Obtain a good animation of markers, with 8 bit transparency channel, in google maps, and self-remove them at the end of the “movie”.
Approaching the problem
Google Maps API don't have a way to build animations with 8 bit transparency images as frames.
To achieve this purpose we use javascript, enriching the Marker object with our attribute mop_ct to save the index of the current animation frame.
2012-01-28 // Retrieves the current reading position in a file of any process on linux
Rarely I cross-post messages but for me this information was like a revelation so … have patience.
Question
How to get the current reading position in a file of a process on your machine ?
This information can be useful in an avalanche of circumstances
- you are importing 10G dump.sql into your new database
- a friend is downloading your last recorded song (copyright free, obviously
) from your home web-server and you want to know how many bytes you must still send to him before you can turn off the laptop - how long you must wait before a
grepcommand finishes its work
Right Answer
Use cat /proc/<process pid>/fdinfo/<file_handle>
Example
2012-01-15 // Use dokuwiki graphviz plugin to describe a network
Graphviz plugin allows embedding of .dot graphs into dokuwiki pages, put a graph description inside the tag <graphviz> is enough to accomplish this task, for more info about graphviz and the plugin installation see references below.
Goal
2012-01-08 // A simple way to improve dokuwiki with "hide/show" feature
Goal
Sometimes is usefull to hide not critical parts of a document with the possibility to show them when you want (examples, diagrams, etc.) like this:
this wiki content is hideable
2012-01-07 // Blog's reasons
Using dokuwiki at work I found that it has a very good trade-off between time spent and results quality; after a short training you can produce clear drafts to be shared with other people until the topic of the document is stable enough to be converted to a more “definitive” documentation format.
Finding useful an html snippet to hide part of a wiki document I had searched a blog engine that allow me to simply explain it, maybe with a syntax that I just known … the blogtng plugin of dokuwiki was a good solution.
So this is a wiki build with dokuwiki to speak about dokuwiki itself, recursively tasty! 
.
If you like this wiki approach to blogging you can found a step by step howto on the Andreas Haerter blog.
I will use it to share technical and not technical informations that can have some value for other persons.
Enjoy, Matteo.
