Am 16.09.2011 13:05, schrieb Rahkonen Jukka: > Hi, > > A meter based scalebar cannot work very well with epsg:4326 because > the more north you go the narrower is the 1 degree slice in east-west > direction. Therefore you will have a different scale in the top of > the map and in the bottom. Some estimate could be done according to > the latitude in the middle of the image, in your case ~120 m. > However, the scale is also different in the east-west and south-north > directions. Use a coordinate system like UTM and the scalebar will be > right. EPSG:3857 has the same trouble with scale changing according > to latitude, though in a bit different way. Lappland is not as wide > as in this map, not to mention the gigantic Svalbard > http://osm.org/go/1mH7 >
Thank you Jukka. With your explanation I can understand the problem. Even better: with an UTM based projection the scalebar has the right size and values. Have a nice weekend. Lars _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
