Does anyone know of a good way to find topographical maps for either download or purchase?
I have looked at offerings from MemoryMap and Anquet, but once you scale beyond a small area they become prohibitively expensive.
I know the USGS and many others offer free downloadable raster topo maps for almost anywhere. But what if I want vector maps using GPS coords? I'm new to GIS but I would assume there is a de facto ...
What re the best quality walking, trekking maps for Spain? In the UK were pretty lucky as we have the Ordance Survey (a government body that maintains all topo maps). Is there an equivalent in Spain? ...