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Subset a gGraph object

Source: R/basicMethods.R
subset-gGraph.Rd

Select a subset of nodes from a gGraph object by index, logical vector, or node name. The @coords, @nodes.attr, and @graph slots are all subsetted consistently.

Arguments

x

a valid gGraph object.

i

indices for subsetting nodes — a logical vector, integer indices, or character node names. If missing, all nodes are kept.

j

indices for subsetting node attributes (columns of @nodes.attr). If missing, all attributes are kept.

...

additional arguments (currently unused).

drop

logical, currently unused.

Value

A gGraph object containing only the selected nodes.

See also

getNodes to retrieve node names. isInArea to select nodes within a geographic area.

Other basic_methods: subset-gData

Examples

## subset to nodes in a geographic area
plot(worldgraph.10k, reset = TRUE)
#> Spherical geometry (s2) switched off

#> Spherical geometry (s2) switched on
geo.zoomin(list(x = c(-6, 38), y = c(35, 73)))
#> Spherical geometry (s2) switched off

#> Spherical geometry (s2) switched on
x <- worldgraph.10k[isInArea(worldgraph.10k, quiet = TRUE)]

## subset by node name
x <- worldgraph.10k[c("1", "2", "3")]