3.9.4. - Special Reciprocal Space Scans
klradial angle start_radius finish_radius intervals time [H=expr]
hlradial angle start_radius finish_radius intervals time [K=expr]
hkradial angle start_radius finish_radius intervals time [L=expr]
klcircle radius start_angle finish_angle intervals time [H=expr]
hlcircle radius start_angle finish_angle intervals time [K=expr]
hkcircle radius start_angle finish_angle intervals time [L=expr]
The first three scans trace a path that would form a radial
cut if projected on to
the
K-L,
H-L
or
H-K
planes
at the specified angle in degrees
from the positive
K,
H
or
H
axes, respectively.
start_radius
and
finish_radius
specify the radial distance from the origin.
The unscanned coordinate will be reevaluated at each point according
to the optional expression in the last argument, which can be a function
of the other coordinates, for example,
H=L/300. Otherwise, the unscanned
coordinate will remain constant.
The second three scans differ only in that they trace out a circular
arc in the projected plane at the radius given by the first argument.
start_angle
and
finish_angle
are the endpoints in degrees of the arc of the scan.
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