Create a new operation with a function that takes the result of this operation and returns a new operation.
Create a new operation with a function that takes the result of this operation and returns a new operation.
Create an operation that applies the function f to the result of this operation, but returns nothing.
Create an operation that applies the function f to the result of this operation, but returns nothing.
Gets a calculation to be used with this focal operation for the given raster neighborhood.
Gets a calculation to be used with this focal operation for the given raster neighborhood.
Choosing the calculation based on on the raster and neighborhood allows flexibility in what calculation to use; if some calculations are faster for some neighborhoods (e.g., using a CellwiseCalculation for Square neighborhoods and a CursorCalculation for all other neighborhoods), or if you want to change the calculation based on the raster's data type, you can do so by returning the correct FocalCalculation from this function.
Raster that the focal calculation will run against.
Neighborhood that will be used in the focal operation.
Call the given function with this operation as its argument.
Call the given function with this operation as its argument.
This is primarily useful for code readability.
http://debasishg.blogspot.com/2009/09/thrush-combinator-in-scala.html
Create a new operation that returns the result of the provided function that takes this operation's result as its argument.
Create a new operation that returns the result of the provided function that takes this operation's result as its argument.
Execute this operation and return the result.
Execute this operation and return the result.
Create a new operation with a function that takes the result of this operation and returns a new operation.
Create a new operation with a function that takes the result of this operation and returns a new operation.
Same as flatMap.
Calculates the aspect of each cell in a raster.
Aspect is the direction component of a gradient vector. It is the direction in degrees of which direction the maximum change in direction is pointing. It is defined as the directional component of the gradient vector and is the direction of maximum gradient of the surface at a given point. It uses Horn's method for computing aspect.
As with slope, aspect is calculated from estimates of the partial derivatives dz/dx and dz/dy.
Aspect is computed in degrees from due north, i.e. as an azimuth in degrees not radians. The expression for aspect is:
Paraphrased from Geospatial Analysis - A comprehensive guide (Smit, Longley, and Goodchild)
SurfacePoint for aspect calculation logic.