I have a erosion map and land use map in DWG files, made of regions (boundary) and hatches.
How to convert regions or hatches to polygons?
This is the picture of the map in DWG file.
Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. It only takes a minute to sign up.Sign up to join this community
Type in Autocad mapexport, choose the online option, select the features required and export to SHAPEFILE in QGIS utlize SAGA complement the Process panel for converting line polygon.
In autocad there is a command "_HATCHGENERATEBOUNDARY", select all hatches and apply this command. This will generate a polyline to all hatches than import/export polyline to polygon.
Regarding to regions.
1.Select all regions and apply explode command.
2.This will convert all regions to line.
3.Than if you have no acadmap apply comand "pedit"-polyline edit and chose multiple.
4.Than chose option "Join".
5.This will convert all lines to polylines.