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Topo USA User Guide
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Your settings are saved until you change them.
•
Clicking Options opens the Options dialog box.
Displaying Basic Map Features
You can show or hide basic map features on your map.
You can also customize map features and customize the interface.
Notes
•
If you cannot make changes to the basic preference check boxes, verify the Use
Custom Map Features check box is not selected.
•
Click Use Defaults to change the map feature settings to the default
preferences.
•
The map features available are based on the Map Colors option you are using.
To Select Basic Map Feature Preferences
Use the following steps to change the basic map feature preferences. Changes made
to the map view display almost immediately after selection.
1. Click the Options button
OR
Click the arrow next to the Options toolbar button to open the menu. Then,
click Options to open the dialog box.
2. Click the Map Features tab.
3. Select the check box next to the map features you want to display on the
map.
OR
Clear the check box next to the map features you want to hide on the map.
•
Shaded Relief—Shaded relief becomes visible at data zoom level 6-0
or greater. It simulates the effect of sun shining on terrain features
and casting shadows, providing greater depth perception of the image.
Lighter shades of gray indicate gentle terrain and darker shades
indicate steep terrain. Using shaded relief may slow down the draw
time of the map screen as you pan.
•
Contours—Contour lines are available at data zoom level 6-0 or
greater. Contour lines show the elevation of the land in feet or meters.
The closer the contour lines, the greater the slope. The distance
between the lines is the contour interval, which is indicated in the
Control Panel (distance units are controlled in the Options dialog box).
•
Land Cover—Land cover colors are available at all data zoom levels.
Colors indicate vegetation and land cover areas on the map such as
rock and sand, forests, transitional areas, and wetlands.
•
Grids—The Grids option can be used to identify coordinate points on
the map. Grid lines automatically adjust for the data zoom level of
your map.
•
Parks or Reserves—Parks and Reserves are available at data zoom
level 7-0 or greater and include areas such as parks, preserves,
recreational area and public forests.
•
Publicly Managed Lands—Publicly Managed Lands are only available
when the Bureau of Land Management (BLM) dataset is downloaded
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on the toolbar.
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