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Basic Analysis and Graphing - SAS

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Chapter 16 Creating Maps 421<br />

Background Maps<br />

sphere. You can use a geodesic scaling, which transforms the map to a more realistic representation of the<br />

Earth. To use the geodesic scaling, change the type of scale on the axes.<br />

To change the axes scale:<br />

1. Right-click over the X or Y axis <strong>and</strong> then select Axis Settings….<br />

2. Change the Scale to Geodesic or Geodesic US.<br />

Figure 16.15 Y Axis Setting Window<br />

Both choices transform the map to a geodesic scaling. Use Geodesic US if you are viewing a map of the<br />

continental US <strong>and</strong> you want Alaska <strong>and</strong> Hawaii to be included in the map. It is important to note that you<br />

must set the scale to geodesic for both axes to get the transformation. You will not see a change in the map<br />

after setting only one of the axes. In the following figure, Simple Earth is used as the background map with<br />

the axes set to use a geodesic scale. The axes lines are turned on as well. Notice the longitudinal lines are now<br />

curved, instead of straight.

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