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ReplaceCity


Unit:SDL_geodb
Class:TGeoDB
Declaration:procedure ReplaceCity (DBEntry: longint; Name: TgdbName; Polygon: TgdbPolygon; ClosedLine: boolean; Date: TDateTime; StateFlag: longint; LatLow, LatHigh, LongLow, LongHigh, Altitude: single; ClassNumber: byte; UserTag: longint);

The method ReplaceCity replaces the database entry DbEntry by city data. The parameter Name contains the name of the city. The outline is defined by a polygon which is passed via the parameter Polygon. The parameter ClosedLine determines whether the outline is a closed line. The parameter Date holds the date and time associated with the city. The parameter StateFlag reflects the state of the database entry. The parameters LatLow ... LongHigh specify the geographical area the city covers. The parameter Altitude defines the (average) altitude of the city data. ClassNumber contains the number of the class the new database entry should belong to, and the UserTag parameter may hold a user-defined number. UserTag is not used by the database system, it can be used to store additional information.

Hint: Please note the difference between a city and a town: while a city is large enough to be represented by an outline polygon, a town is represented by a single point.



Last Update: 2012-Oct-20