[igraph] Igraph incidents

[Mike Dylan]

I have a data frame like this:

 

Incident_ID               Application_Caused_Incident                            Impacted_Systems

11                           PeopleSoft                                                       Financials

11                           PeopleSoft                                                       HR

11                           PeopleSoft                                                       PPM

 

12                           Web                                                                Account_Receivable

12                            Web                                                               HR

12                             Web                                                              PPM

 

13                            PPM                                                              HR

 

I would like to create a igpaph chart that shows the application that caused the problem and impacted systems in igprah format. I am very new to igraph, can somebody start me with the above data frame?