Interpolate values using spherical splines — interpolate

Deprecated. Spline interpolation and smoothing on the sphere. This function is outside the main scope of spatialrisk and will be removed in a future release.

Usage

interpolate_spline(
  observations,
  targets,
  value,
  lon_obs = lon,
  lat_obs = lat,
  lon_targets = lon,
  lat_targets = lat,
  k = 50
)

Arguments

observations: data.frame of observations.
targets: data.frame of locations to calculate the interpolated and smoothed values for.
value: Column with values in observations.
lon_obs: Column in observations with longitude.
lat_obs: Column in observations with latitude.
lon_targets: Column in targets with longitude.
lat_targets: Column in targets with latitude.
k: Basis dimension. For small data sets reduce k manually.

Value

Object equal to targets with an extra prediction column.

References

Splines on the sphere