Settings That Have a Permanent Effect on a Map Layer - MapBasic - 2023

The Default Zoom clause is a special clause that modifies a table, rather than a Map window. Use the Default Zoom clause to reset a table's default zoom distance and center position settings to the window's current zoom and center point.

Every mappable table has a default zoom distance and center position. When the user first opens a Map window, MapInfo Pro sets the window's initial zoom distance and center position according to the zoom and center settings stored in the table.

If a Set Map...Layer statement includes the Default Zoom clause, MapInfo Pro stores the Map window's current zoom distance and center point in the named table. For example, the following statement stores the Map window's zoom and center settings in the table that comprises the first map layer:

Set Map Layer 1 Default Zoom 

The Default Zoom clause takes effect immediately; no Save operation is required.

Examples

The following statement turns on the display of arrows, centroids, and nodes for layer 1:

Set Map 
Layer 1 Arrows On Centroids On Nodes On

The following statement displays layer 1 in its default style:

Set Map 
	Layer 1 Display Graphic