TGIS_Geocoding class

DK for Delphi | GisGeocoding.TGIS_Geocoding | Classes | Constructors | Methods | Properties | Events

Class encapsulates Geocoding support.

Available also on: .NET | Java | ActiveX | Python.

// Delphi
type
  TGIS_Geocoding = class( TGIS_BaseObjectDisposable )
  end;

// C++ Builder
class PASCALIMPLEMENTATION TGIS_Geocoding : public TGIS_BaseObjectDisposable
{
};

→ TGIS_BaseObjectDisposable

Currently arc- and point layers are supported. Any street fragment from intersection to intersection must be a separate shape. There are two ways the class can work:

1. operating on addresses in the form of: “name 12xxx” (known from previous versions);
2. basing on self-defined address formulas (see TGIS_AddressMatching class for more details how

to build the formulas).

Supports also Reverse Geocoding.

var
  geoObj : TGIS_Geocoding ;
  layerSrc : TGIS_LayerVector ;
  r : Integer ;
  sname : String;
begin
 
  // let's get a source layer
  layerSrc := TGIS_LayerVector(TGIS_LayerSHP(GIS.Items[0]));
  if not Assigned( layerSrc ) then
    exit ;
 
  // let's create a geocoding object
  geoObj := TGIS_Geocoding.Create( layerSrc, TGIS_ShapeType.Arc ) ;
 
  geoObj.offset := 0.0001  ;
  geoObj.LoadFormulas( GisSamplesDataDir + 'us_addresses.geo',
    GisSamplesDataDir + 'tiger_file.geo'
  ) ;
 
  // let's find 'WallStreet' street
  sname:='WallStreet';
  r := geoObj.ParseEx(sname) -1 ;
 
  // if not found, maybe let's try to be more specific
  if r <= 0 then
    sname := sname + ' ???' ;

• Geocoding sample
• TigerGeocoding sample