To set a map object as a target:
- Make the layer containing the map object editable.
- Select the object(s) to be the target for editing.
- On the SPATIAL tab, in the Edit group, click Set Target.
You can now create a cookie cutter object and perform an editing operation.
Setting a map object as a target allows you to perform a variety of editing functions on the object, including Combine commands, Erase commands, Split commands, and the Overlay Nodes onto Target command. Setting the target tells MapInfo Pro to apply any of these editing operations to the target object.
MapInfo Pro's editing model is based on first setting the target, then creating an object to act as the "cookie cutter" that overlays the target and performs the editing action on the target.
Use Set Target command on editable lines, polylines, arcs, ellipses, rectangles, and rounded rectangles. You cannot use Set Target to edit point or text objects.
Understanding Object Size
Many customers use the contouring process to create signal coverage maps, which requires large object sizes to create highly detailed coverage areas. To accommodate this need, we have increased the limit on number of nodes and the number of polygons or polylines that can be stored in objects.
Theoretically, the size of an object is only limited by the amount of memory in the system, but for practical reasons, a limit is imposed to work within limits of file size and most system memory limits. Currently, the object size limit is 1,073,741,823 bytes in memory. This limit is imposed so that an object of this size can be saved into a MAP file. All MapInfo Pro files have a theoretical limit of 2GB, but due to header size and other required Map file contents, the actual size limit has to be somewhat less.
The node limit is 134,217,724 nodes in any object. This is the actual number of nodes that can fit into this 2GB memory size limit. It will be difficult to reach this node limit because memory allocation may prohibit it. It may not be possible to create a Map this size on a computer being used to accommodate an object this size; the program may throw an error when you try it.
Keep these notes in mind:
- For regions, the theoretical maximum number of polygons in a multi-polygon region or collection is 20,648,881 polygons that can fit into the size limit for all objects given above.
- For polyline objects, the theoretical maximum number of segments in a multi-segment polyline is 24,403,223 that can fit into the size limit for all objects given above.
- For multipoint objects, the theoretical maximum number of nodes is 134,217,724 that can fit into the size limit for all objects given above.