A county map of the United States shows a comparison of measurement values across US States.
The following steps extend the work completed in State Map with Bubbles and demonstrate how to create a map visual on the dataset
US County Populations [data source
samples.us_counties]. This produces a map with bubble marks that correspond to the total population of each county.
county. This article demonstrates how to use the Alias setting to make the dataset field
ctnameconform to this requirement.
US State Population - Map with Bubblesvisual in edit mode.
Under Dimensions, select
ctname and drag it over the Geo shelf on the main part of the screen. Drop to add it to the shelf, to the right of
stnameand drag it over the Filters shelf on the main part of the screen.
stnamefield, and select Pick values from list.
In the Pick values for stname modal window, select California and click Save.
1-10, as described in Mark Size Range.
Click Refresh Visual.
Note that the map automatically zooms in to show detail of California, and the bubbles are sized to show high population concentration around San Francisco and Los Angeles.
Click Edit next to the title of the visualization.
US County Population - Map with Bubbles.
Above the left navigation bar, click Save.