the short answer is yes, as the way to create a filled and point map is to bring latitude or longitude in again the dual axis and synchronize to overlay, if you have these in two data sources the option to drag in the lat/lon from the second datasource is greyed out (assuming you want to use generated lat lon) meaning it cannot be used.
If you have hard coded lat/lon in your datasets it is theoretically possible but i would be wary about how you are joining the tables to bring in the secondary datasource, knowing it will need to aggregate anything that comes from it.
hope this helps.
Thanks for replying.
I've got the data in the same data set now, and I've used the dual axis and it seems to have worked.
I'm looking at the filled map at the top of my screen, with the plotted map underneath - it's just a matter of overlaying them now! How is this done?
ok if you have one above the other then;
on the second latitiude pill click on the little down arrow (right end of pill) in there is the option to dual axis, click this and the two should overlay.
first copy the plotting area address and open the google and enter 'batch decoding' .select any website from the list and paste data into the input area of the site.click on Geo code and it will automatically generate latitude and longitude.copy this latitude and longitude.
In tableau worksheet level,go to data menu and click on paste the data.after drag the latitude and longitude into rows and columns.it will automatically plot the area as your requirement.
May be it's helpful.
otherwise,If it is possible you can send the workbook.
Sreenadha Reddy Palakolanu