ST = spatiotempf(F, X, Y), where F is an array of scalar fields,
returns a spatio-temporal matrix ST(M,N), in which each line M is given
by the value of F(M) taken along the line(s) joining the points X,Y,
specified in physical units (eg., in mm). To specify a single line
from (x0,y0) to (x1,y1), use X = [x0,x1], Y = [y0,y1].
ST = spatiotempf(F) allows the user to select lines using the mouse
(double-click to finish line selection).
[ST,X,Y] also returns the selected lines.
The value of the field along the lines is interpolated using Matlab's
Published output in the Help browser
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