Creates a new phase of an existing overlay.
- The position in the overlays list of the overlay being phased.
- The position in the overlays list at which to insert the new phase overlay. If this argument specifies a position in the existing overlays then the new overlay will not replace the existing overlay at the given position, but will shuffle any other overlays down the list.
Phase overlays refer to the same data as their original overlay but can have different styles, scale thresholds, Filter etc. set on them. The underlying data in the original overlay is not copied, merely referenced again.
Available: GEO D OM OD SISpy