[SAC-HELP] BBFK alphanumeric output from SAC

[Bob Myhill]

 Dear all,

I've been trying for some time to plot bbfk data retrieved from SAC (the
09/04/2008 version) in .a format, but do not understand the structure of the
data output.

The SAC manual informs me that the data is output in 'square mode', but I
don't know how this relates to the azimuth and wavenumber, and how
consecutive data points are chosen. I've tried both a simple azimuthal and
wavenumber progression (rotating around the z-axis or radiating from it) but
neither of these seem to recreate SACs own output.

Could you give me some advice on how to read this data?

Many thanks,
Bob
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