Cloudera Data Visualization Map visuals support choropleth mapping of
measurements over a map of Canadian FSA and Postal Codes.
A map of Canada shows a comparison of population density, at the level of the FSA (1st 3
digits of the Postal Code). The following steps demonstrate how to create a new choropleth
map of Canada. This example uses the Canadian Census dataset, constructed from the
canada_census_population_dwellings.csv and
ca-postal-codes.csvfiles, and joined of the fields fsa
and Postal Code, respectively. For more information, see Canadian
census, Adding data, and Creating datasets.
Start a new visual based on the Canadian Census dataset.
For instructions, see Creating a visual.
In the VISUALS menu, find and click
Map.
The shelves of the visual changed. They are now Geo,
Color, Size, Drill,
Tooltips, X Trellis, Y
Trellis, and Filters. The only mandatory shelf for
map visuals is Geo.
Populate the shelves from the DATA menu:
Under Dimensions, select Postal Code from
the table ca_postal_codes, and add it to the
Geo shelf.
Under Measures, select Population 2011 from
table canada_census_population_dwellings, and add it to the
Color shelf.
Specify the use of Canada Map View in the Settings > Map interface.
For instructions, see Map view.
Click REFRESH VISUAL.
Optional: Alias the fields as necessary.
For instructions, see Alias.
Optional: Enable panning and zooming option, as described in Customizing zoom.
Optional: Change the color palette, as described in Change color palette of
visuals.
Click the pencil/edit icon next to the title of the
visualization to enter a name for the visual.
In this example, the title is changed to 'Canadian 2011 Population - Postal Code
Choropleth'. You can also add a brief description of the visual as a subtitle below the
title of the visualization.
At the top left corner of the Dashboard Designer, click
SAVE.
