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3. In the Marks card, open the panel for
Latitude (generated) (2)
and change the
Mark type from
Automatic
(or Filled Map) to
Shape
.
4. Still in the Marks card area for
Latitude (generated) (2)
, remove
AVG(B: In-
ternet users (per 100)
from the color shelf and add
B: Internet users (cal-
culated)
to the Size shelf.
5. Use the Color and Size cards to change the color of the rings to a darker gray and in-
crease the size of all of the rings to produce the final dual-axis map shown in
Fig-