Knowledge Base

KB10344 - Creating a line feature from GPS points.

Step one - create a line:

  shp := layer.CreateShape( gisShapeTypeArc ) ;

  my_uid := shp.Uid ;

  shp.Lock(1) ;

  shp.Reset ;

  shp.AddPoint(my_point_1 ) ;

  shp.AddPoint(my_point_2 ) ;

  shp.AddPoint(my_point_3 ) ;

  ...

  shp.Unlock ;

Step two - add a point on GPS update:

  shp := layer.GetShape( my_uid ) ;

  shp.Lock(1) ;

  shp.AddPoint(my_point ) ;

  shp.Unlock ;

Created: November 21, 2003, Modified: August 03, 2015