Creates a CG network from a .sif file.
Takes in a .sif file output from Cytoscape, and creates an 'igraph' representing the network.
The edges will be annotated with the type of interaction and a weight (1 for activation and -1 for inhibition)
Usage
CreateCG(sifFile)
Arguments
sifFile
the path of the .sif file that contains all
the information about the network Load in .sif file