I'm trying to create a base map for a Maine Coastal area, and wanted to create a polygon layer of the land cover from the coastline in QGIS.
Whether I created the coastline vector layer from the USGS national map or downloaded it from NOAA, both options leave me with a multipart line. Ignoring islands the USGS data has ~100 almost connected line segments and the NOAA layer (below) is about 800 connected line segments.
I had thought I could disolve these and run linetopoly, but that seems to have some more processing needed that I don't understand, does anyone see what I should be doing to create or get my polygon layer?
The raw data looks like this, maybe I could make the coast into one segment?
856 -69.340984,44.013133 ... -69.345531,44.014013 END 857 -69.356459,44.008586 ... -69.356459,44.008586 END 858 -69.340544,44.012986 -69.341057,44.013719 etc...