controlling size of wind barbs

[Dan Leins]

List,

Can someone tell me how you control the size of the wind barbs produced when
using gxout=barb?  I've messed around with the thickness, and while this is
useful, I need my barbs themselves to appear bigger, not thicker.  I've been
told that I could just as easily use streamlines or arrows, but I'd prefer
to use barbs since they'll be most easily recognized by the users of the
image.  Anyone know how to make the barbs larger?

Thanks,
Dan Leins
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