STAT = statf(F) returns a structure that contains statistics of the
vector/scalar field F. F is a structure (or structure array) of fields
as obtained by loadvec (vector field) or vec2scal (scalar field).
If F is a scalar field, STAT contains the following fields:
mean, std, rms: mean, standard deviation and rms.
n: number of nonzero elements.
zeros: number of zero elements.
mom: non-centered moments, <s^n>
momabs: non-centered absolute moments, <|s^n|>
cmom: centered moments, <(s-<s>)^n>
cmomabs: centered absolute moments, <|s-<s>|^n>
skewness: normalized 3rd order non-centered moment.
flatness: normalized 4th order non-centered moment.
skewnessc: normalized 3rd order centered moment.
flatnessc: normalized 4th order centered moment.
history: remind for which field statf has been called.
For the "centered" quantities, the brackets <> means spatial and
ensemble average over the whole fields.
If F is a vector field, use [STATX,STATY] = statf(F), where STATX and
STATY are the statistics for each component of the vector field.
... = statf(F,MAXORDER) specifies the maximum order for the moments.
MAXORDER=6 is used by default (although its convergence may not be
guaranteed).
If the fields contain 0 (zero) values, they are considered as
erroneous and are not included into the computations.
Examples
statrot = statf(vec2scal(filterf(loadset,1),'rot'));
See Also
loadvec, vec2scal, histf, corrf, vsf.