The Layer Properties dialog box allows you to display line directions, nodes, and object centroids. Select the Show Line Direction check box when you want to show the direction in which line objects are drawn. Check the Show Nodes check box to display the nodes in a layer.
The Show Centroids box displays the centroids of each object in a layer. In MapInfo Pro, a region's centroid does not represent its center of mass. Instead, the centroid represents the location used for automatic labeling, geocoding, and placement of thematic pie and bar charts. If you edit a map in Reshape mode, you can reposition region centroids by dragging them. You can work in reshape mode on the SPATIAL tab, in the Edit group, by clicking Reshape.
For instructions on inserting table-based style in the Layers window, see Inserting Styles into Tables.
Changing a Region's Centroid
Autolabels, thematic bar and pie graphs, and point objects created by geocoding are drawn at the object's centroid. You can move a region's centroid, which will in turn affect the location of all future objects drawn in this region. However, autolabels, and geocoded point objects drawn prior to changing an object's centroid remain unchanged.
To move a region's centroids:
- On the HOME tab, in the Windows group, click Tool Windows, and click Explorer from the list, to open the Explorer window.
- In the Maps list, double-click the layer name to open the Layer Properties dialog box.
- On the Layer Display tab, check the Show Centroids check box.
- Click OK.
- On the MAP tab, in the Selection group, click Select from the drop-down list.
- Select the object on the map whose centroid you want to move.
- On the SPATIAL tab, in the Edit group, click Nodes, and Reshape.
If this option is not available, then check that the layer you selected is set as editable. In the Layers list, click
beside the layer name to turn on editing. - Click the centroid and drag it to another location within the object.
See Also: