geos_is_valid(
c(
"POLYGON ((0 0, 1 0, 1 1, 0 1, 0 0))",
"POLYGON ((0 0, 1 1, 1 0, 0 1, 0 0))"
)
)
geos_is_valid_detail(
c(
"POLYGON ((0 0, 1 0, 1 1, 0 1, 0 0))",
"POLYGON ((0 0, 1 1, 1 0, 0 1, 0 0))"
)
)
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