Ordnance Survey GB overlays (GB specific)

Ordnance Survey data is normally supplied on CD-ROM. To load this data onto your PC or network file server, follow the instructions provided by Ordnance Survey.

SIS has a wide range of options to load Ordnance Survey GB data. All Ordnance Survey file formats are loaded directly by SIS without the need for conversion.

SIS includes support for the following Ordnance Survey GB data:

• MasterMap Topography Layer
• MasterMap Address Layer
• MasterMap Imagery Layer
• MasterMap Highways Network
• MasterMap ITN (Integrated Transport Network) Layer
• MasterMap Index
• VectorMap District
• VectorMap Local
• OS (GB) OpenData
• CD-ROM
• Meridian 2
• OpenSpace Pro Tiles

To access these Ordnance Survey options select Add Overlay [Home-Map], and select the Ordnance Survey (GB) tab.

Ordnance Survey data can be loaded so as to read and display native OS MasterMap data, on-the-fly, as ‘flat files’, i.e. attribute data is stored separately from the geographic data, in the following ways:

• as a non-editable overlay (File option, or Ordnance Survey CD-ROM option if loading direct from a CD-ROM)
  
• using an index dataset
  
• as individual tiles, using the Imported File option to make an editable copy of the data
• load into SIS by dragging and dropping the file in the Map Window.

The following OS Managers allow data supplied directly from Ordnance Survey to be loaded into SIS without translation, and also handle COU updates.

• OS OpenData Manager
• OS VectorMap Manager
• OS MasterMap Manager
• OS Network Manager

These datasets must be loaded using the appropriate Manager and then read using the specific layer types. These datasets are not editable and only show tables which match the schema created by using the OS MasterMap Manager.

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