Get nodes attributes from gGraph/gData object

The function getNodesAttr returns the values of a set of variables associated to the nodes (i.e. node attributes) of a gGraph or gData object.

Usage

getNodesAttr(x, ...)

# S4 method for gGraph
getNodesAttr(x, nodes = NULL, attr.name = NULL, ...)

# S4 method for gData
getNodesAttr(x, attr.name = NULL, ...)

Arguments

x: a valid gGraph or gData object.
...: other arguments passed to other methods (currently unused).
nodes: an optional integer, logical, or character string indicating the subset of nodes to be used. If NULL, all nodes are used.
attr.name: an optional character string indicating which node attributes should be returned. If provided, it must match at least one of the columns of x@nodes.attr.

Value

A data.frame with the requested nodes attributes. Nodes are displayed in rows, variables in columns.

Functions

getNodesAttr(gGraph): Method for gGraph objects
getNodesAttr(gData): Method for gData objects

Examples


## gGraph method
head(getNodesAttr(worldgraph.40k))
#>   habitat
#> 1     sea
#> 2     sea
#> 3     sea
#> 4     sea
#> 5     sea
#> 6     sea


## gData method
getNodesAttr(hgdp)
#>         habitat
#> 26898     coast
#> 11652     coast
#> 22532      land
#> 23709      land
#> 24988      land
#> 28833      land
#> 26917     coast
#> 28836     coast
#> 21797      land
#> 39741     coast
#> 39740     coast
#> 39740.1   coast
#> 16798      land
#> 16798.1    land
#> 22561      land
#> 19359      land
#> 21280      land
#> 13597     coast
#> 20000      land
#> 16162      land
#> 13760     coast
#> 7348      coast
#> 13365      land
#> 10816      land
#> 5655      coast
#> 40768      land
#> 30164      land
#> 6433       land
#> 15411      land
#> 20543      land
#> 26955      land
#> 13518      land
#> 8583       land
#> 34111      land
#> 18189      land
#> 20755      land
#> 34111.1    land
#> 899        land
#> 20110      land
#> 5389       land
#> 1539       land
#> 36661      land
#> 28323      land
#> 37309      land
#> 16265      land
#> 35388      land
#> 28322      land
#> 33480      land
#> 19483     coast
#> 27148      land
#> 11457      land
#> 30221      land