Switches between source and target

Source: R/math.R

Puts the lowest id node among every dyad as source (and the other as target)

switch.edges(edges)

Arguments

edges

A matrix or data frame structured as a list of edges

Value

A list containing two data frames.

Details

edge.list transforms the input into a two-elements list containing a dataframe of nodes (with columns “id” and “label”) and a dataframe of edges. The last one is numeric (with columns “source” and “target”) and based on auto-generated nodes' ids.

See also

Other manipulation: check.dpl.edges()

Author

George Vega Yon

Examples


  relations <- cbind(c(1,1,3,4,2,5,6), c(2,3,1,2,4,1,1))
  relations

#>      [,1] [,2]
#> [1,]    1    2
#> [2,]    1    3
#> [3,]    3    1
#> [4,]    4    2
#> [5,]    2    4
#> [6,]    5    1
#> [7,]    6    1
  
  switch.edges(relations)

#>   source target
#> 1      1      2
#> 2      1      3
#> 3      1      3
#> 4      2      4
#> 5      2      4
#> 6      1      5
#> 7      1      6