newEdge: Create a new vertex or edge in a Ubigraph

In omegahat/RUbigraph: Interface to Ubigraph server via XML-RPC

Description

These functions communicate with the Ubigraph server and create a node or an edge in the graph, or alternatively remove previously created edges or nodes.

Usage

newEdge(src, dest, ..., id = NA, server = "http://127.0.0.1:20738/RPC2", .attrs = list(...), curl = getCurlHandle())
newVertex(id = NA, ..., server = "http://127.0.0.1:20738/RPC2", .attrs = list(...), curl = getCurlHandle())
removeEdge(id, server = "http://127.0.0.1:20738/RPC2", curl = getCurlHandle())
removeVertex(id, server = "http://127.0.0.1:20738/RPC2", curl = getCurlHandle())

Arguments

id	a user-supplied identifier to use for the Ubigraph object
src	an identifier of an existing Ubigraph object
dest	an identifier of an existing Ubigraph object
...	additional name = value that specify attributes of the vertex or edge. These are passed on to setAttributes.
server	the identity of the XML-RPC server object, i.e. machine and port
.attrs	an alternative way to specify attributes to be passed on to setAttributes.
curl	a curl handle which can be specified by the caller or indirectly via a Ubigraph-class server object. This is important for efficiency as we want to reuse existing, open connections.

Value

An object of class VertexID-class or EdgeID-class depending on the type of object in the Ubigraph that is created.

Author(s)

Duncan Temple Lang

References

http://ubietylab.net/ubigraph/index.html

See Also

Ubigraph

Examples

 if(isUbigraphRunning()) { # just for testing the example
    a = newVertex()
    b = newVertex()
    c = newVertex(label = "C", color = "red", size = 2)
 
    e = newEdge(a, b)
 }
 

omegahat/RUbigraph documentation built on May 24, 2019, 1:55 p.m.