There are a few ways to do this and there may be some examples out there using calculated fields, but for now I'll just describe a simple way using measure names and measure values.
Create the map by double clicking on a gegoraphic dimension.
In the data window (the left side) in the measure section, select all but the two measures you are interested in.
Right click and select hide on those measures.
Right click in a blank area of the Measures window and select "Show Hidden Fields."
Put Measure Names on the filter shelf and click "OK" to get the two measures you are interested in.
Right click on the Measure Names that is on the filter shelf and select "Show Quick Filter."
On the Measure Names quick filter, click the arrow in the upper right side of it and choose "Single Value List."
Click that same arrow again and under the Customize menu uncheck "Show All."
Put Measure Values on the size shelf.
Close the map card.
I've attached an example workbook.
multipledimsonamap.twbx 198.7 KB
I tried to open your example but my tableau version didn't allow me saying your workbook was created by a newer version. I am using 6.0.7 release.
I created it with Tableau 6.1, so that's understandable. I'll try to post a 6.0 version shortly.
I have two sheets with the same "settings." One have the custom geocoded points I want, and the other has the census tracts (California) that I want. I want the points as circles on the tracts. Not sure what is going on here. Please comment and HNY.
I'm not exactly sure what you mean, but what I think you want is to show the some custom points and also cencus tracts on the same map. There may be a way to do it with dual axis maps. Joe Mako created a video of how to do polygons and map data together -- see the post on February of 2011 in http://www.tableausoftware.com/support/forum/topic/map-shapefiles-and-points.
Joe's is not exactly the same thing you want, but it is similar.
If you have already gone through and done the Tableau custom geo-coding, then what you'll do is to create a second Latitude Generated on the Rows shelf, then do multiple marks. For one latitude, put cencus trancs on LOD; for the other, put your dimensioni with the custom geo coding. Choose different color encodings for the two marks to make them different. After that, choose dual axis to put them on the same map. I've attached an example that uses State and Area Code as the two different LODs.
dual_axis_map.twbx 365.8 KB
Would have handy an example of a custom geocoding import file? Mine is formatted as follows (with sample contents in parens):
Country (US), State (Alabama), County (Autauga), TRC_KEY ("01234567876"), Latitude, Longitude, etc.
It hangs up on missing two levels: [Country], [State] but I'm not sure why. Thanks.