xoa.filter.demerliac

xoa.filter.demerliac(da, na_thres=0, dt_tol=0.01)

Apply a dermerliac filter on a data array

Note that the data array must have a valid time dimension. When the time step is less than an hour, an interpolation is made on the weights since they are made for hourly time series.

Parameters:

• da (xarray.DataArray) –

• dt_tol (float) – Relative tolerance for the time step variability

• na_thres (float) – A float between 0 and 1 that defines the allowed level a NaN contamination. See convolve().

Returns:

xarray.DataArray