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function: smooth_complexang_realamp $steps
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keyboard equivalent: none

The "cr" radio button (lower right on the larger
F3 panel) causes the "SMOOTH" button to operate
on overlaid complex-valued date.

The real and imaginary components are smoothed as
with "val" smoothing, but then the amplitude is
replaced with a real-valued smoothing of the
complex amplitude.

This results in less reduction in amplitude for a
given number of smoothing steps because local
differences in phase angle are ignored, and
therefore do not reduce amplitude.

It is appropriate for complex-valued data where
the complex amplitude has been replaced by a
statistic, such as the _r,_i datasets -- where
the complex amplitude is sqrt(F).

This smoothing option is not visible in the
standard F2 panel but is accessible there with a
middle-click on the "val" button.
