There are always a number of issues that pop up when plotting specific geo-locations (lat/long) for our clinics atop a background filled map, using the dual axis method. I can plot the clinic locations separately from the filled map without any problem; the accuracy is spot on. But when I try to combine the two using any kind of join, the clinic locations show up in unrelated geo-codes. I have tried everything that I can think of but come up empty handed. If someone has been able to resolved this behavior in Tableau please share.