I'm trying to create a flow map using FlowMapGenerator. My map is trying to visually show the movement of professional soccer referees to various venues throughout the season. I plan to have several maps, one for each referee. I have a shapefile of points of each referee's home town that also contains information about each of them. I also have a shapefile of points of each team's location that also contains information about each team.
For the first map, the referee lives in New Jersey. I exported his information from the referee shapefile as an independent shapefile to use as the source point. I then added a new attribute to the team data containing the number of times he visited each venue this season to use as a Z-Value. I then exported the information of only the venues he had visited as a new independent shapefile to use as the destination points so that no venue would have a Z-Value of 0.
When I run the toolbox to create the flowmap, I get the following error:
Does anyone have any idea what I might need to fix to get the flowmap to generate?