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| def wrap: "(\(.))"; | |
| def type(t): t + wrap; | |
| def geom1: map(tostring) | join(" "); | |
| def geom2: map(geom1) | join(","); | |
| def geom3: map(geom2 | wrap) | join(","); | |
| def geom4: map(geom3 | wrap) | join(","); | |
| def wkt: | |
| if .type == "Point" then | |
| .coordinates | geom1 | type("POINT") | |
| elif .type == "MultiPoint" then | |
| .coordinates | geom2 | type("MULTIPOINT") | |
| elif .type == "LineString" then | |
| .coordinates | geom2 | type("LINESTRING") | |
| elif .type == "MultiLineString" then | |
| .coordinates | geom3 | type("MULTILINESTRING") | |
| elif .type == "Polygon" then | |
| .coordinates | geom3 | type("POLYGON") | |
| elif .type == "MultiPolygon" then | |
| .coordinates | geom4 | type("MULTIPOLYGON") | |
| elif .type == "GeometryCollection" then | |
| .geometries | map(wkt) | join(",") | type("GEOMETRYCOLLECTION") | |
| else | |
| error("Error: unsupported type \(.type)\n") | |
| end; | |
| . | wkt |
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