xConverter | R Documentation

## Function to convert an object between graph classes

### Description

`xConverter` is supposed to convert an object between classes "igraph", "dgCMatrix", "dtree", "lol", and "json".

### Usage

    xConverter(obj, from = c("igraph", "dgCMatrix", "dtree", "lol",
    "json"),
    to = c("dgCMatrix", "igraph", "dtree", "lol", "json", "igraph_tree"),
    verbose = TRUE)

### Arguments

`obj` | an object of class "igraph", "dgCMatrix", "dtree", "lol", and "json"
`from` | a character specifying the class converted from. It can be one of "igraph", "dgCMatrix", "dtree", "lol", "json"
`to` | a character specifying the class converted to. It can be one of "igraph", "dgCMatrix", "dtree", "lol", "json" and "igraph_tree"
`verbose` | logical to indicate whether the messages will be displayed in the screen. By default, it sets to true for display

### Value

an object of class "igraph", "dgCMatrix", "dtree", "lol", or "json".

### Note

Conversion is supported directly: 1) from 'igraph' to "dgCMatrix","dtree","lol","json","igraph_tree"; 2) from 'dgCMatrix' to "igraph"; 3) from 'dtree' to "igraph","lol","json"; 4) from 'lol' to "dtree","json"; 5) from 'json' to "lol","dtree". In summary: "dgCMatrix" – "igraph" (hub) – "dtree" (hub) – "lol" – "json". Note: 1) igraph –as.igraph– phylo –as.hclust/as.phylo– hclust –as.dendrogram/as.hclust– dendro; 2) igraph –ggraph::den_to_igraph– dendro

### See Also

`xRDataLoader`

### Examples

    # generate a ring graph
    g <- make_ring(10, directed=TRUE)

    # convert the object from 'igraph' to 'dgCMatrix' class
    xConverter(g, from='igraph', to='dgCMatrix')

    ## Not run:
    # Conversion between 'dgCMatrix' and 'igraph'
    # ig.EF (an object of class "igraph" storing as a directed graph)
    g <- xRDataLoader('ig.EF')
    g

    # convert the object from 'igraph' to 'dgCMatrix' class
    s <- xConverter(g, from='igraph', to='dgCMatrix')
    s[1:10,1:10]

    # convert the object from 'dgCMatrix' to 'igraph' class
    ig <- xConverter(s, from="dgCMatrix", to="igraph")
    ig

    ##############
    g <- make_graph("Zachary")

    # from 'igraph' to "dtree","lol","json"
    dtree <- xConverter(g, from='igraph', to='dtree')
    lol <- xConverter(g, from='igraph', to='lol')
    json <- xConverter(g, from='igraph', to='json')

    # from "lol","json" to 'dtree'
    dtree <- xConverter(lol, from='lol', to='dtree')
    dtree <- xConverter(json, from='json', to='dtree')

    # from 'dtree' to "igraph"
    g <- xConverter(dtree, from='dtree', to='igraph')

    # force 'igraph' to a tree
    gtree <- xConverter(g, from='igraph', to='igraph_tree')

    ## End(Not run)