Extrapolate points using LP prediction filter.
trace : 1D ndarray
1D array to extrapolate from and append to.
a : ndarray
LP coefficients, must be ordered according to direction of extrapolation.
pred : int
Number of points to predict using LP.
append : {‘a’, ‘b’}
Location to append new points, ‘a’ for after the current data, ‘b’ for before the current data.
ntrace : 1D ndarray
1D array with extrapolated points appended
nmrglue.process.proc_lp.fix_roots
nmrglue.pipe_proc
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