i have to create a map for university (I'm not a professional) that will be published, so the data has to be freely available with no publishing restrictions. i guess the license i need for this is "public domain".
while SRTM data is public domain and i can use this data, i got some problems with the vector data of mainly the rivers.
So vmap 0 is in public domain:
http://gis-lab.info/qa/vmap0-eng.html (in shapefiles)
what about vmap 1 ? is the data published here in shp format: http://gis-lab.info/qa/vmap1-eng.html also in the public domain? does anybody know this?
i found another ressource of free geodata on the diva GIS homepage: http://www.diva-gis.org/gdata
most of the data belongs to the digital chart of the world project. do you know if the data also is public domain, so that I can publish it on a map without indicating the source?
so in fact, these are the two big ressources i found until now. do you know other geodata ressources like that, which may be published as a map without indicating the ressource?
another problem: even the data of digital chart of the world are quite detailed. if I need data only on a scale of 1:3.000.000 or even higher, some data (as rivers of rhine, danube, rhône) are just too much detailed. I know that the generic mapping tools also got data in those scales, but i can't handle this programm. of course I can create a new shapefile on basis of the more detailed vmap0 data, but isn't there a possibility to get those geodata out of generic mapping tools or isn't it published anywhere online for download? unfortunately the vmap0 and 1 geodata doesn't have a suitable hierarchy for that and those big rivers aren't "idealized" for serving those big scales.
to summarzie: do you know any freely available (best is public domain data) for scales of >1:3.000.000 to 10:000.000 ? those must have some "idealized" data of e.g. big rivers.
sry for the broken english. i'd be really happy for some tipps.
Edited by dav, 03 September 2009 - 08:13 AM.