DNS now working in VirtualBox client after network switch

I have a laptop and regularly change network connections. I don't shut the machine down but let it hibernate in between. I use VirtualBox, windows host (sorry, this is it for now but I promise it will change soon ;o), Linux guest.

I had to configure the Google free DNS service in the Linux guest so that the DNS works even when I change network (going home from work, etc.) :

http://code.google.com/speed/public-dns/docs/using.html

Import data into R with an unknown number of columns?

http://stackoverflow.com/questions/1874443/import-data-into-r-with-an-unknown-number-of-columns

UTM grid zones of the world

http://www.dmap.co.uk/utmworld.htm

Gauss-Kruger 3-degree zone for Istanbul

http://spatialreference.org/ref/epsg/2207/

Installing the R package : rgl

On Ubuntu 12.04 (precise) : sudo apt-get install libgl1-mesa-dev libglu-dev libxt-dev libfreetype6-dev fontconfig mesa-utils To install in Ubuntu karmic the R package "rgl", one needs to install the X11 header files :

sudo apt-get install xorg-dev

and the OpenGL libraries :

sudo apt-get install freeglut3 freeglut3-dev libgl1-mesa-dev libglu1-mesa-dev libice-dev libsm-dev libx11-dev libxau-dev libxdmcp-dev libxext-dev libxt-dev mesa-common-dev x11proto-core-dev x11proto-input-dev x11proto-kb-dev x11proto-xext-dev xlibmesa-gl-dev xtrans-dev

The installation of "rgl" then should work in R :
install.packages("rgl", dep=T)

Virtualbox mounting a Windows host directory under Linux client

C_DRIVE /C_DRIVE vboxsf uid=acizmeli 0 0


or


Documents /home/me/Host vboxsf uid=1000,gid=1000,nodev,noexec,nosuid,auto,rw 0 0

(http://ericgazoni.wordpress.com/2011/03/25/mounting-virtualbox-osx-share-on-ubuntu-guest/)

Geoserver GeoWebCache Tile Seeding

If there is a "." in the Geoserver layer name, the "Seed this layer" link in the GeoWebCache interface does not work. Simply removing the "." makes it work.