set_convolution: Set convolution applied to processed data

In ssokolen/rnmrfit: Robust NMR Lineshape Fitting in the Frequency Domain

Description

Although it's possible to fit the processed data based on its final appearance, it may sometimes be more useful to try and fit the underlying lineshape with an explicit consideration of the convolution that it has undergone. This convolution includes any apodization as well as the process of zero-filling, which can be considered as the convolution of a hypothetically longer experiment by a step function. By default, the applied apodization is read from the procs parameters, but these can be overwritten by either a list of parameters or a custom function.

Usage

set_convolution(object, trim = 0, param = list(), f = NULL)

## S4 method for signature 'NMRData1D'
set_convolution(object, trim = 0, param = list(),
  f = NULL)

Arguments

object	An NMRData1D object.
trim	Number of point to truncate from the end of the fid's acquisition time (not including zero fill). It's common to circle shift Bruker's group delay artefact from the start of a collected fid to the last 50-100 points. While most apodization methods will passively get rid of or diminish the influence of these points, they may have a stronger impact with minimal or no apodization.
param	A list of lists combining apodization names and parameters, (see apodize_signal) for a full list of apodizations and their parameters. E.g. list('exponential'=list('lb'=1)).
f	A function f(n) capable of generating the convolution vector of length n (ranging from 0 to the acquisition time). If provided, f overrides the param list.

Value

An NMRData1D object with modified convolution vector.

ssokolen/rnmrfit documentation built on May 23, 2019, 1:48 p.m.