A = getattribute(F) returns a structure containing the attributes
of the vector or scalar field F. If F is an array, then A is a cell array.
F may be vector or scalar fields, or filenames of any file format
supported by loadvec. Wildcards (*) and brackets () may be used (see
rdir for details).
The field names of the structure A are given by the attribute names
(leading '_' are removed from the attribute names). The attribute
values are converted to numerical values whenever a numerical
conversion is possible.
VAL = getattribute(F, NAME) returns only the value of the specified
attribute NAME. NAME is not case sensitive, and '_' are ignored.
To obtain the image acquisition time of F, see getpivtime.
Returns the times of all the vector fields of the current set:
time = getattribute('*.vec', 'time');