Provides access to members that control surfaces.

#### Product Availability

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

#### Members

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

AsPolygons | Converts the surface to a polygon feature class representing slope or aspect. | |

Contour | Output contours based on the specified root value and interval. | |

ContourList | Output a list of contours corresponding to the specified eleveation values. | |

Domain | The interpolation domain of the surface. | |

GetAspectDegrees | Returns the aspect at the specified location in degrees. | |

GetAspectRadians | Returns the aspect at the specified location in radians. | |

GetContour | Returns a countour passing through the queried point. | |

GetElevation | Returns the z value of the specified location. | |

GetLineOfSight | Computes the visibility of a line-of-sight from the observer to the target. | |

GetProfile | Returns a polyline with z values interpolated from the surface. | |

GetProjectedArea | Returns the projected area of the surface above or below an input z value. | |

GetSlopeDegrees | Returns the slope at the specified location in degrees. | |

GetSlopePercent | Returns the slope at the specified location in percent. | |

GetSlopeRadians | Returns the slope at the specified location in radians. | |

GetSteepestPath | Returns the steepest path downhill from the specified point. | |

GetSurfaceArea | Returns the area measured on its surface above or below an input z value. | |

GetVolume | Returns the volume above or below an input z value. | |

InterpolateShape | Interpolates z values for a defined geometric shape. | |

InterpolateShapeVertices | Interpolates z values for a defined geometric shape at its vertices only. | |

IsVoidZ | Returns TRUE if the passed value is equal to the surface's void value. | |

Locate | Returns the intersection of the query ray and the surface. | |

LocateAll | Returns the distances of intersections of the query ray and the surface. | |

QueryNormal | Returns the vector normal to the specified triangle. | |

QueryPixelBlock | Derives slope, aspect, hillshade, or elevation from the input surface and writes the result to the provided PixelBlock. | |

QuerySurfaceLength | Returns the length of an input polyline measured on the surface. | |

Z | The surface Z = f(x,y). | |

ZFactor | Multiplication factor applied to all z values to provide unit-congruency between coordinate components. |

#### Inherited Interfaces

Interfaces | Description |
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IFunctionalSurface | Provides access to information about the functional surface, generating heights given x,y locations. Also see IFunctionalSurface2. |

#### CoClasses that implement ISurface

CoClasses and Classes | Description |
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RasterSurface (esri3DAnalyst) | The Esri raster surface component. |

Tin | The Esri TIN component. |