That means if you want to create a map, let's say from the Alps, you have to be aware that Scale suitable for walking needs more data than a general map with only the basic tracks on it. Resolution or Scale - The more detail you need the higher the resolution of the image must be. Please check Google or Wiki if you are more interested in those details as I will only explain why it is important and what problems it may cause. In noob terms spoken it defines how the image/map is taken from the earth's surface.Ī very common Datum is WGS84 while some of the most common Projections are Mercator and Longitude/Lattitude (or Geodetic). There are many combinations of Datums and Projections possible for a map - what is that? This explains why some maps seem to be a bit "off the track", especially older maps - any digital map can only be as good as the source and the reference used to rectify the image!
Maps are created from paper, satellite images or airial images, often is the data referenced by well known ground points. So I decided to open a thread for general help and advise on creating custom maps for/with OziExplorer. I noticed by the requests here that many users need maps for regions are hard to get or too expensive to buy.
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