Path model in structural form
Structural form requires only tables 'object' and 'vertex'.
Minimal columns is x,y but can be grouped by path_ for separate paths, then subobject_ and object_ for full polygon support.
PATH0(x, ...) ## Default S3 method: PATH0(x, ...) ## S3 method for class 'PATH0' PATH0(x, ...) PATH0_from_df( x, ..., path_ = "path_", object_ = "object_", subobject_ = "subobject_", x_ = "x", y_ = "y" )
x |
data frame with at least x, y columns |
... |
ignored |
path_ |
path identifier, these should identify individual paths |
object_ |
object identifier (like group in ggplot) |
subobject_ |
subobject identifier (like polygon_id with multipolygons in sfheaders) |
x_ |
optional name for x column (assumed to be x) |
y_ |
optional name for x column (assumed to be y) |
This function exists as a special-case for non-format input for PATH0(). It's expected there
are columns x, y, and optionally object_, subobject_, and path_. These correspond to
names in sfheaders, multipolygon_id, polygon_id, and linestring_id. (subobject is optional if
not multipolygon).
PATH0 model with tables 'object' and 'vertex'
(p <- PATH0(minimal_mesh)) p$object$topology_ PATH0_from_df(data.frame(x = runif(10), y = runif(10)))
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