Return the ppm scale of an MRS dataset or fit result.

Source: R/mrs_data_proc.R

Return the ppm scale of an MRS dataset or fit result.

ppm(x, ft = NULL, ref = NULL, fs = NULL, N = NULL)

# S3 method for mrs_data
ppm(x, ft = NULL, ref = NULL, fs = NULL, N = NULL)

# S3 method for fit_result
ppm(x, ft = NULL, ref = NULL, fs = NULL, N = NULL)

Arguments

x

MRS dataset of fit result.

ft

transmitter frequency in Hz, does not apply when the object is a fit result.

ref

reference value for ppm scale, does not apply when the object is a fit result.

fs

sampling frequency in Hz, does not apply when the object is a fit result.

N

number of data points in the spectral dimension, does not apply when the object is a fit result.

Value

ppm scale.