Description Usage Arguments Value
Performs fourier transform of complex intensity data (i.e., in the indirect dimension). Although the procedure is very similar to fft_signal, real/imaginary data processing will differ depending on the mode of indirect data acquisition.
1 | fft_spectrum(indirect.time, intensity, acqus.list, hypercomplex = FALSE)
|
indirect.time |
A vector of delay times for the signal. |
intensity |
A vector of complex intensity data. |
acqus.list |
A list of lists containing acqus parameters with 'o1', 'sfo1', 'sw', and 'fnmode' entries. This list can be generated using read_acqus() or through other means. These parameters can also be nested within a list item called 'acqus2' if multiple dimensions are read at once. |
hypercomplex |
TRUE to output full quadrature components (rr, ri, ir, ii), FALSE to omit imaginary components in the direct dimension (ir, ii). |
A data.frame made of two columns – "indirect.shift" containing the indirect dimension chemical shift and "intensity" containing the real component of the fourier transformed direct dimension data (corresponding to rr and ri as a complex pair). If the hypercomplex option is set to TRUE, the ir and ii data is added as another complex column labelled "dispersive".
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