Provides access to members that identify geometric objects that can have 3D coordinates and defines operations on such objects.
**Note:** the IZ interface has been superseded byIZ2. Please consider using the more recent version.

#### Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

#### Description

IZ contains methods for setting Zs through interpolation based on existing Z values, Z values set at the From and To Points, and Z values from a FunctionalSurface. Z values may also be set to a single constant value. IZ also contains a method for determining if consecutive vertices exhibit a vertical relation.

#### Members

Description |
||
---|---|---|

CalculateNonSimpleZs | Calculates the non-simple Z values by extrapolation/interpolation for polylines and interpolation for polygons. | |

InterpolateFromSurface | Use the specified functional surface to generate Z values for the vertices of this object. | |

InterpolateZsBetween | Generate Z values by linear interpolation for all vertices in the range [start+1, end-1]. | |

MultiplyZs | Multiplies all the Z values by a factor. | |

OffsetZs | Offsets all the Z values by an offset value. | |

SetConstantZ | Sets Z coordinates at all vertices to zLevel. | |

ZMax | The maximum Z value. | |

ZMin | The minimum Z value. | |

ZVertical | Indicates if at least two consecutive vertices of this polyline or polygon have the same x and y values, but distinct z values. |

#### Inherited Interfaces

Interfaces | Description |
---|---|

IZCollection | Provides access to operations on Z-aware geometries. |

#### CoClasses that implement IZ

CoClasses and Classes | Description |
---|---|

Polygon | A collection of rings ordered by their containment relationship; optionally has measure, height and ID attributes. |

Polyline | An ordered collection of paths; optionally has measure, height and ID attributes. |

#### See Also

IPoint.Z Property | IZAware Interface | IZCollection Interface | IZ Interface