New charts from Skolelinux Schools

[RalfGesellensetter <rgx@gmx.de>]

Dear list,

some of you might remember a graph displaying the growing amount of 
schools using Skolelinux (this script was originally written by Tommy 
Gildseth):

http://skolelinux.no/slschools/barchart.php?lang=en

(also try to append stuff like &mode=line,novalues)

Petter inspired me to come up with a histogram by countries. Now, here 
is a first result:

http://skolelinux.no/slschools/countrychart.php?lang=en

(you may append something like &mode=unsorted,bars,novalues)

Also, I made a cartogram that displays these bars within a world map, 
taking each country's average coordinates as base point. The result is 
not too satisfying yet, because some bars overlap:

http://skolelinux.no/slschools/cartogram?lang=en

I tried to switch to discs (r ~ sqrt(N)), but this is no solution:

http://skolelinux.no/slschools/cartogram?lang=en&mode=discs

But hopefully this makes it more attractive to schools all over the 
world to sign up!

Very soon we could abandon xplanet and create maps with PHP (anyway as 
for the world map). 

What do you think?
Regards
Ralf.