If I use a nautical chart and digitise the coastline to some degree of precision, can I then slap my own (free) license on the data set?
Or is that a partial `reproduction' that falls under the original's chart copyright? If getting the lat and lon of the coastline is considered a partial reproduction: Using that argument, I couldn't use a chart to pick out the position of a city and publish that. Where's the line? Is it like code? (Use more than a few lines and copyright applies, so the lat/lon of a city is okay, but not some extended part of a coastline?) This came up on the GMT mailing list. Thanks for your opinion. Peter
