3-D graph viewpoint specification.
VIEW(AZ,EL) and VIEW([AZ,EL]) set the angle of the view from which an
observer sees the current 3-D plot. AZ is the azimuth or horizontal
rotation and EL is the vertical elevation (both in degrees). Azimuth
revolves about the z-axis, with positive values indicating counter-
clockwise rotation of the viewpoint. Positive values of elevation
correspond to moving above the object; negative values move below.
VIEW([X Y Z]) sets the view angle in cartesian coordinates. The
magnitude of vector X,Y,Z is ignored.
Here are some examples:
AZ = -37.5, EL = 30 is the default 3-D view.
AZ = 0, EL = 90 is directly overhead and the default 2-D view.
AZ = EL = 0 looks directly up the first column of the matrix.
AZ = 180 is behind the matrix.
VIEW(2) sets the default 2-D view, AZ = 0, EL = 90.
VIEW(3) sets the default 3-D view, AZ = -37.5, EL = 30.
[AZ,EL] = VIEW returns the current azimuth and elevation.
VIEW(T) accepts a 4-by-4 transformation matrix, such as
the perspective transformations generated by VIEWMTX .
T = VIEW returns the current general 4-by-4 transformation matrix.
See also VIEWMTX , the AXES properties View, Xform.