The Curved Labels feature uses complex algorithms that are designed to enhance the display of your polyline/arc features. There are several rules that determine whether MapInfo Pro can display a curved label.
- MapInfo Pro can only draw curved labels using TrueType fonts. If you select a non-TrueType font, MapInfo Pro substitutes a comparable TrueType font, so the label you chose may display differently than you expect. Also, if you change a horizontal label using a non-TrueType to a curved label, the new label may display differently due to the font substitution.
- Part of the label string must fit along the polyline/arc that it is labeling. If it cannot fit, MapInfo Pro determines that the label is too long and discards it.
- MapInfo Pro cannot draw curved labels for polylines that are very jagged (however, it does depend on the curvature of the line).
- Labels that curve back onto themselves are discarded and do not display.
- Curved labels follow the same rules for overlap detection, duplicate text, and partial segment labeling as non-curved labels. Each of these rules affects how and when MapInfo Pro displays the labels.
- You cannot drag curved labels as you can other labels.
- You can create curved labels with the Label tool at any point along a polyline/arc.
- You can reposition the curved auto labels using the Label tool.
- Curved and non-curved labels persist for layers in the workspace.
- The Labeler utility does not support curved labels, so you cannot transfer curved labels to the cosmetic layer.
- The curved labels functionality supports double-byte characters.
- The Label Lines controls are disabled whenever you select the Curve labels along segments option.
- You cannot underline curved labels.