This function prints regression plot between pair of centrality measures
# S3 method for visualize.association
print(x, y, scale = TRUE, file = NULL)
a vector containing a centrality values as independent variable
a vector containing a centrality values as dependent variable
Whether the centrality values should be scaled or not(default=TRUE)
A character string naming the file to print into. If NULL the result would be printed to the exist directory(default=NULL)