pmesh.lanczos module¶
Deprecated since version 0.1.
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pmesh.lanczos.
lanczos2
(dx)¶
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pmesh.lanczos.
lanczos3
(dx)¶
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pmesh.lanczos.
paint
(pos, mesh, weights=1.0, mode='raise', period=None, transform=None, window=<function linear>)[source]¶ Paint particles, painting points to Nmesh, each point has a weight given by weights. This does not give density. pos is supposed to be row vectors. aka for 3d input pos.shape is (?, 3).
pos[:, i] should have been normalized in the range of [ 0, mesh.shape[i] )
thus z is the fast moving index
- mode can be :
- “raise” : raise exceptions if a particle is painted
- outside the mesh
“ignore”: ignore particle contribution outside of the mesh
period can be a scalar or of length len(mesh.shape). if period is given the particles are wrapped by the period.
transform is a function that transforms pos to mesh units: transform(pos[:, 3]) -> meshpos[:, 3]