Configuring SWDs to use with Edit Add-In

To allow users to edit a database layer, tweak the original SWD file using CadcorpSIS Desktop.

  • Add the spatial database layer to the SWD ( Add Overlay). The database user must have edit rights on the table.
  • On the database layer, set the WML::AllowEdit& property to 1. More than one editable table can be defined in an SWD.

    • Note: See Creating an Overlay Property.

Define a snapping layer

Edits can be snapped to an underlying data layer. These are defined by adding the WML::AllowSnapping& property to the layer in the SWD and ensuring the value is set to 1:

Snapping requires features to be pushed to the client from GeognoSIS. Most datasets can be used for snapping but the following recommendations should be taken into consideration:

  • SQL Server, PostGIS or Oracle overlays are ideal (not Cadcorp fdb or bds)
  • When snapping to OS MasterMap data, a lightweight snapping layer should be created by copying line work from the OS MasterMap table to a separate table. Do not use a filtered or phased overlay.
  • Only one overlay should be defined as the snapping overlay.