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"Default" Math Vs "Legacy"?

Cumofogabriel
What are we calling the new default Geo-Tol math? "New Math"? "Default Math"?
I remember this gun fight a loooong time ago, it ended up bad for Hexagon and us also.
what I mean is:
The "New Math" best fits a little too aggressive for me compared to "Legacy". Last time I had reports coming out with perfect true position our customer Lockheed Martin mopped the floor with Pc-Dmis and started the whole ISO Best-Fit shootout, disallowing us to use Pc-Dmis best fit algorithms. The "New Math" best fits also. Here is a comparison:



What do you think?
and can we come up with a disparaging term like "New Math" other than "Geo-Tol"? or "Geo out-of Tol"?

thx
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  • neil.challinor As far as I know the math for fitting features is what PTB and NIST test. I am only aware of one software package that was actually accepted for GD&T by a 'well known aerospace company' and it wasn't PC-DMIS. Your are right in that this is not something actually tested by organizations such as PTB or NIST but your comments seems to float back and fourth between feature fitting and GD&T which is a bit misleading.
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  • neil.challinor As far as I know the math for fitting features is what PTB and NIST test. I am only aware of one software package that was actually accepted for GD&T by a 'well known aerospace company' and it wasn't PC-DMIS. Your are right in that this is not something actually tested by organizations such as PTB or NIST but your comments seems to float back and fourth between feature fitting and GD&T which is a bit misleading.
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