A square numeric matrix (socimatrix) with real valued edges
(no NA's).
threshold
The threshold for removing edges from the network in order to
calculate the positions for the nodes using the futcherman reingold algorithm.
The value is multiplied against max(abs(sociomatrix)) to determine the
threshold. Defaults to 0.5.
save_pdf
Logical indicating whether the plot should be saved to a PDF.
pdf_name
The name we would like to give to the output file. Be sure to
include a ".pdf" extension.
output_directory
The directory where the user would like to output the
PDF if save_pdf == TRUE.