View Points

View Points datasets can be generated from any database, spreadsheet or CSV (comma-separated values) file containing coordinate data representing a geographical position on the earth.

Unlike other spatial geometries that have to be stored in special data types (such as Binary Large Object data type), the coordinate information can be stored in a numeric data type.

The format of the coordinate information should match any of the coordinate systems supported in Cadcorp SIS Desktop 9.1 (for instance OSGB National Grid x and y pairs or WGS 1984 Latitude/ Longitude pairs.)

Points can be used to represent geographical points of interest such as road traffic accidents, street lamps, addresses, and so on. Attribute data associated with a point (columns in the same table) are read into the overlay schema.

View Points datasets work efficiently with data derived from global positioning systems (GPS). Organisations can use hand held GPS systems to collect spatial data which can then be read by Cadcorp SIS Desktop 9.1 using the View Points dataset.

See Cadcorp View Points for details of creating a View Points overlay.

Note: By default View Point overlay points will be hardly visible. The GIS administrator needs to adjust the visibility and styling in the overlay properties in regard to typical map viewing scales.

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