Make WKT geometrycollection objects
Make WKT geometrycollection objects
geometrycollection(...)
... |
Character string WKT objects representing a Point, LineString, Polygon, etc. |
This is different from the other functions that create WKT from R objects, in that we can't do the same thing for GeometryCollection's since many different WkT object could be created from the same input. So, this function accepts WKT strings already formed and attempts to creat a GeommetryCollection from them.
Other R-objects:
circularstring(),
linestring(),
multilinestring(),
multipoint(),
multipolygon(),
point(),
polygon()
## empty geometrycollection
geometrycollection("empty")
# geometrycollection("stuff")
# Character string, returns itself
geometrycollection("GEOMETRYCOLLECTION(POINT(4 6), LINESTRING(4 6, 7 10))")
# From a point
geometrycollection(point(-116.4, 45.2))
# From two points
geometrycollection(point(-116.4, 45.2), point(-118.4, 49.2))
# From various object types
geometrycollection(point(-116.4, 45.2),
linestring("LINESTRING (-116.4 45.2, -118.0 47.0)"),
circularstring(list(c(1, 5), c(6, 2), c(7, 3)), fmt = 2)
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