package hillshade
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Type Members
- trait HillshadeMethods extends MethodExtensions[Tile]
- trait Implicits extends AnyRef
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class
SurfacePoint extends AnyRef
A representation of the approximated partial derivatives of a raster cell, and the slope and aspect that can be calculated from those values.
A representation of the approximated partial derivatives of a raster cell, and the slope and aspect that can be calculated from those values. Trigonometric values of aspect and slope, computed using the partial derivatives instead of library trigonometric functions, are also exposed for performance.
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abstract
class
SurfacePointCalculation[T] extends FocalCalculation[T]
Calculation used for surface point calculations such as Slope, Aspect, and Hillshade
Calculation used for surface point calculations such as Slope, Aspect, and Hillshade
Uses a specific traversal strategy for performance benefits.
- Note
For edge cells, the neighborhood points that lie outside the extent of the raster will be counted as having the same value as the focal point.
Value Members
-
object
Hillshade
Computes Hillshade (shaded relief) from a raster.
Computes Hillshade (shaded relief) from a raster.
The resulting raster will be a shaded relief map (a hill shading) based on the sun altitude, azimuth, and the z factor. The z factor is a conversion factor from map units to elevation units.
Returns a raster of ShortConstantNoDataCellType.
This operation uses Horn's method for computing hill shading.
If Hillshade operations encounters NoData in its neighborhood, that neighborhood cell well be treated as having the same elevation as the focal cell.
- object Implicits extends Implicits