NMRPipe Processing Functions
FSH: Frequency Shift via Inverse Fourier Transform.

Flag	Argument	Default	Description
`-ls`	`lsPts`	`0.0`	Left Shift Points.
`-rs`	`lsPts`	`0.0`	Right Shift Points.
`-sw`			Adjust Sweep Width and ppm calibration.

FSH applies a circular-shift to the points in each vector from the current dimension of the data. The shift is performed by inverse-transforming a data vector, applying a first-order phase correction, and transforming the data back to its original domain. This method can be used to shift data by a fractional number of points.

OPTIONS

-rs rsVal
Specifies the number of points for the shift. If the number is positive, the data will be shifted to the right. If it is negative, the data will be shifted to the left. This value can also be specified with spectral units (% Hz ppm).

-ls lsVal
Specifies the number of points for the shift. If the number is positive, the data will be shifted to the left. If it is negative, the data will be shifted to the right. This value can also be specified with spectral units (% Hz ppm).

-sw
If this flag is used with frequency-domain data, the chemical shift calibration information is updated (NDORIG and NDCENTER).

Frank Delaglio, Ph.D.