The time machine
The consequent considering of the factor “time” transforms the 2D- or rather 3D- into a 4D-GIS based on a 4D geo-data infrastructure – the basis for a “time machine”. This enables the user to look at the forest at different (historical or future) conditions. The following image sequence illustrates this “time machine functionality” against the background of storm damages caused by Kyrill, which makes the user aware of time “before Kyrill”, “after Kyrill” and “after conversion” in comparison. The list of fallen trees gives an overview of storm damages.