The first line is accessing a field iqDAC of the struct metadata, which it transposes.
The second line divides two variables.
%you can also use doc instead of help
SQUEEZE Remove singleton dimensions.
B = SQUEEZE(A) returns an array B with the same elements as
A but with all the singleton dimensions removed. A singleton
is a dimension such that size(A,dim)==1. 2-D arrays are
unaffected by squeeze so that row vectors remain rows.
See also SHIFTDIM.
Documentation for squeeze
Other functions named squeeze
distributed/squeeze dlarray/squeeze tall/squeeze
HANNING Hanning window.
HANNING(N) returns the N-point symmetric Hanning window in a column
vector. Note that the first and last zero-weighted window samples
are not included.
HANNING(N,'symmetric') returns the same result as HANNING(N).
HANNING(N,'periodic') returns the N-point periodic Hanning window,
and includes the first zero-weighted window sample.
NOTE: Use the HANN function to get a Hanning window which has the
first and last zero-weighted samples.
See also BARTLETT, BLACKMAN, BOXCAR, CHEBWIN, HAMMING, HANN, KAISER
FFTSHIFT Shift zero-frequency component to center of spectrum.
For vectors, FFTSHIFT(X) swaps the left and right halves of
X. For matrices, FFTSHIFT(X) swaps the first and third
quadrants and the second and fourth quadrants. For N-D
arrays, FFTSHIFT(X) swaps "half-spaces" of X along each
FFTSHIFT(X,DIM) applies the FFTSHIFT operation along the
FFTSHIFT is useful for visualizing the Fourier transform with
the zero-frequency component in the middle of the spectrum.
Class support for input X:
float: double, single
See also IFFTSHIFT, FFT, FFT2, FFTN, CIRCSHIFT.
Documentation for fftshift
Other functions named fftshift