Is interolate bicubic compatible with nonperiodic topographies ?

[sannant]

SurfaceTopography/SurfaceTopography/Uniform/Interpolation.py

Lines 100 to 108 in b036215

	def interpolate_bicubic(self, derivative='fourier'):
	r"""
	Returns a bicubic interpolation function based on the topography's heights
	and slopes as obtained using finite-differences (derivative='fd') or Fourier
	derivative (derivative='fourier').
	Note that for nonperiodic line scans/topographies, interpolation only
	works for positions between 0 and sx - sx/nx - i.e. the interpolated
	physical domain of the topography is smaller than the nominal domain.

From the docstring it seems that with the finite differences derivatives it is.

However, the function raises an error when the provided topography is not periodic

[pastewka]

It should be compatible with it. The bicubic interpolation itself does not support periodicity.

[pastewka]

I have to correct myself. The bicubic interpolation does support periodicity.