The SDL Component Suite is an industry leading collection of components supporting scientific and engineering computing. Please visit the SDL Web site for more information....



IxLatHigh


Unit:SDL_geodb
Class:TGeoDB
Declaration:property IxLatHigh[ix: longint]: TIxLLRec;

In order to find database entries quickly TGeoDb maintains five indexes offering an ordered access to the latitudes, longitudes and item IDs of the database entries. Since a database entry may contain more than one point (e.g. country borders are polygons with many points), individual indexes are maintained both for the lowest and highest latitudes/longitudes.

The read-only array property IxLatHigh provides an ordered list of the highest latitudes of all database entries. The parameter ix specifies the number of the index entry and may take values between 1 and NumEntries. The property returns the latitude and the corresponding entry number of the database.



Last Update: 2012-Oct-20