org.tinfour.gis.utils

Interface IVerticalCoordinateTransform

public interface IVerticalCoordinateTransform

Defines an interface for transforming the vertical coordinate value of a Shapefile feature when loading it.

Method Summary

Modifier and Type	Method and Description
double	transform(int recordIndex, double z) Transform the vertical coordinate of a Shapefile.

Method Detail

transform

double transform(int recordIndex,
                 double z)

Transform the vertical coordinate of a Shapefile. The arguments to this method are intended to provide considerable flexibility for cases in which the Shapefile features may not include a meaningful Z coordinate (which is often the case). Thus the record index is also provided. Implementations may use the record index to access auxiliary data files such as the DBF file associated with the Shapefile or for other purposes.

Parameters:

recordIndex - the record index from the Shapefile (records are numbered from 1 to N). Implementations may also be implemented a fixed value if that is what is required for the application.

z - the vertical coordinate from the shapefile (may be undefined or set to a meaningless value)

Returns:

a floating point value to be assigned to the feature according to the needs of the application.