I am trying to build a map (IPVGM) of locations which will be used as a block appended to all entities of type Person. Locations are stored in a taxonomy, with an extra field to hold the coordinates. There are multiple fields in a Person that reference the Locations taxonomy (Field:birthplace and Field:other_locs), and I am trying to plot all of them on the same map. IPVGM can handle multiple locations per row, but the view I've been able to construct so far duplicates the birthplace in every row. This means that IPVGM constructs a map with (in this case) 4 birthplaces.
I'd like to use Views PHP to remove values for birthplace and birthplace coordinates in every row but the first one. I've had some luck trying to do this in the Output Code of Views PHP, but I think it needs to be handled in the Value Code area in order for IPVGM to pick up on the field values (or hopefully lack thereof). Any help? I looked at Views Distinct, and using a Global:PHP filter, but both of these would remove the entire row, when I only want to remove the birthplace & birthplace coordinates components.