Quote Originally Posted by Hai-Etlik View Post
Most GISes have the ability to do various kinds of conditional symbolization based on scale. So you can tell it to do things like, if the scale is smaller than 1:100,000, only display cities with a population of at least 750,000. There are also tools to simplify linestrings and polygons so they are suitable for a particular scale, Inkscape does include a form of this.
Can you tell us some GIS which is simple to use and open source? I found Landserf, that is very simple, but it is not open source. Thanks.