choclo.point.kernel_nne#
- choclo.point.kernel_nne(easting_p, northing_p, upward_p, easting_q, northing_q, upward_q, distance)[source]#
Third derivative of the inverse of the distance along north-north-east.
This is equivalent to the derivatives along north-east-north and east-north-north.
Important
The coordinates of the two points must be in Cartesian coordinates and have the same units.
- Parameters:
- Returns:
- kernel
float
Value of the kernel function.
- kernel
Notes
Given two points
and defined in a Cartesian coordinate system, compute the following kernel function:where
refer to the norm (the Euclidean distance between and ).