That was kind of my take also, Stan.

I may have my local library find Jones for me, and make use of the $60/yr I'm now paying in library tax which mostly goes to fund the two dozen or so computer stations.

I'm not buying another book about 2D shotgun patterns. It's been done. O&T, Zutz, Brister etc.

Zutz was a fan of the Berlin-Wansee method which purported to measure 'central thickening', but that thing has the center divided into quadrants which would seem to return truly useless information even if the results were repeatable.

Don Amos has read Jones and comments that the major finding is that patterns follow Rayleigh distribution, and small samples are pointless.

I still think 2D pattern analysis of a 3D system is useless.

"The price of good shotgunnery is constant practice" - Fred Kimble