SampleDirectedNetwork   Linear network representing a directed road
                        structure
SampleNetwork           Linear network representing a road structure
SamplePointPattern      Point pattern on a road network simulating
                        traffic accidents
SimplifyLinearNetwork   Simplifies a linear network object by merging
                        the edges that meet at a second-degree vertex
                        if some conditions on the angle they form and
                        on their lengths are satisfied
runAppSpNetPrep         Runs the SpNetPrep Shiny web application.
