ITGIS_LayerWCS interface

DK11 for ActiveX | TatukGIS_XDK11.ITGIS_LayerWCS | Interfaces | Methods | Properties

Encapsulation of an OpenGIS WCS layer.

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

// C#
public interface ITGIS_LayerWCS: ITGIS_LayerPixel
{
}

' VisualBasic
Public Interface ITGIS_LayerWCS
  Implements ITGIS_LayerPixel
End Class

// Oxygene
type
  ITGIS_LayerWCS = public interface( ITGIS_LayerPixel )
  end;

ITGIS_LayerPixel

To open a WCS layer provide the path with server url and 'SERVICE=WCS' key like

 Layer.Path := ‘http://WCS.jpl.nasa.gov/WCS.cgi?SERVICE=WCS’ ;

This layer can be opened by opening the file name_of_layer.ttkwp or embedding all parameters to Path property as CRLF or '\n' delimited string. Structure of this file must be:

  [TatukGIS Layer]
  Storage=WCS
  Name=layer name
  Caption=layer caption
  Info=additional layer info
  Copyright=copyright information
  Url=WCS server url
  UserAgent=user agent in a meaning of the HTTP protocol
  TimeOut=time out in milliseconds for fetching single layer
  ...
  Parameters key=value
  ...

  [TatukGIS Layer]
  Storage=WCS
  Name=layer name
  Caption=layer caption
  Url=server url
  ...

Parameters:

If the Service is omitted then class will try to recognize the server of its own:

  Layer.Path := 'http://WCS.jpl.nasa.gov/WCS.cgi?SERVICE=WCS' ;

It is possible to embed into Path additional WCS parameters like COVERAGE, CRS, FORMAT like

  layer.Path := 'http://WCS.jpl.nasa.gov/WCS.cgi?SERVICE=WCS&FORMAT=image/jpeg&COVERAGE=global_mosaic' ;

For WCS servers that require authentication, it is possible to embed into Path additional parameters USER, PASS like

  layer.Path := 'http://WCS.jpl.nasa.gov/WCS.cgi?SERVICE=WCS&USER=test&PASS=test' ;

or use templates format instead of real parameter values and OnPassword event for secured decoding like

  layer.Path := 'http://WCS.jpl.nasa.gov/WCS.cgi?SERVICE=WCS&USER=<#USER#>&PASS=<#PASS#>' ;

To define proxy settings use GisSetProxySettings method.

WCS layers can have defined many styles. The current style is stored in the Params. Style property of each sublayer and can be changed to switch a style before the layer redraw.