# Interface VerticalExtent

All Known Implementing Classes:
  `DefaultVerticalExtent`

@UML(identifier="EX_VerticalExtent", specification=ISO_19115) public interface VerticalExtent
Vertical domain of dataset.

Since:
  1.0

- ## Method Summary

  Modifier and Type
  Method
  Description
  `Double`
  `getMaximumValue()`
  Returns the highest vertical extent contained in the dataset.
  `Double`
  `getMinimumValue()`
  Returns the lowest vertical extent contained in the dataset.
  `VerticalCRS`
  `getVerticalCRS()`
  Provides information about the vertical coordinate reference system to which the maximum and minimum elevation values are measured.

- ## Method Details

  - ### getMinimumValue

    @UML(identifier="minimumValue", obligation=MANDATORY, specification=ISO_19115) Double getMinimumValue()
    Returns the lowest vertical extent contained in the dataset.
    Returns:
      Double mandatory for valid content, may be null for an invalid document.

  - ### getMaximumValue

    @UML(identifier="maximumValue", obligation=MANDATORY, specification=ISO_19115) Double getMaximumValue()
    Returns the highest vertical extent contained in the dataset.
    Returns:
      Double mandatory for valid content, may be null for an invalid document.

  - ### getVerticalCRS

    @UML(identifier="verticalCRS", obligation=MANDATORY, specification=ISO_19115) VerticalCRS getVerticalCRS()
    Provides information about the vertical coordinate reference system to which the maximum and minimum elevation values are measured. The CRS identification includes unit of measure.
    Returns:
      The vertical CRS.
    Since:
      2.1