Pitney Bowes MapInfo Professional - Manual (Page 73)

the street layer only when the zoom is set to a distance that allows you to see the street detail properly,
for instance, less than 5 miles.
The first map does not have zoom layering set for its street layer. At a zoom of 15 miles across, notice
how difficult it is to see any detail. The second map has zoom layering set to display the streets when
the zoom is less than five miles. Therefore, the streets layer does not display when the window is set at
15 miles.
For more information, see Setting the Zoom Layering in the Help System.
You can display different layers in the same Map window at different zoom levels. For example, you
have a layer of streets, a layer of county boundaries, and a layer of state boundaries. You want the
streets layer to be visible only when the zoom level is less than eight miles. You want the county boundary
layer to display when the zoom level falls between 20 miles and 200 miles. You want the states boundary
layer to be visible only when the zoom level is greater than 100 miles. You can set a different zoom level
for every layer in your Map window.
When you add an object, a region, a line, or a polyline in the Map window and zoom out beyond
where the zoom layer would permit you to see that feature, MapInfo Professional turns off zoom Note:
layering so you can continue to see what you are working on. When you complete the add
process, a message displays asking you if you want to leave zoom layering off (so you will still
be able to see the feature). If you click Cancel, MapInfo Professional cancels the zoom layering.
If you click OK, you need to adjust your zoom settings to see this feature again.
For more information, see Changing a Map's Zoom Level in the Help System.
Positioning and Sizing Labels
To label a map object using the Label button:
1. Make sure that the layer containing the objects you want to label is selectable. Choose Map > Layer
Control and click the Selectable icon to make the layer selectable.
2. Click the Label button in the Main toolbar.
3. Click on an object with the Label button to display a label for that object.
MapInfo Professional labels the object with the values (from the column that you specified for that layer
in the Layer Properties dialog box on the Label Display tab).
Changing Label Options
Two features in the Layer Properties dialog box help you with label placement: Label Position and
Offset.
To change label options:
1. Choose Map > Layer Control. The Layer Control window opens.
2. In the Layer list, double-click the layer name. The Layer Properties dialog box opens.
3. Select the Label Display tab and specify the desired label options, such as label style.
4. Select the Labeling Rules tab and specify the desired label placement and label adjustments, such
as allow or discard overlapping text, try other positions when overlapping occurs, allow duplicate
text, and label partial objects.
Label Position (also called the anchor point) is the label's position relative to the map object. Click
on one of the buttons to select an anchor point. You have nine choices.
The anchor point is an ongoing attribute of the label. For example, if you anchor a point object's label
at Center Left and you increase the label's font size, the text will grow to the left. This way, the text
can never overwrite the point.
The default anchor point varies with the type of map object you are labeling:
• Regions default to Center.
73 MapInfo Professional User Guide
Chapter 3: The Basics of MapInfo Professional