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The emerging discussion on conventions for axis definition is likely to be
fairly intense. I can certainly appreciate the arguments of those who favour
the definitions proposed by Professor Hatze and Dr. Kirtley, but I think it
is also reasonable to support the proposed convention on the basis that a
two dimensional axis definition would label the horizontal axis X and the
vertical Y. Expanding to a third dimension intuitively labels the mutually
orthogonal axis Z. Perhaps the very fact that different bodies and
manufacturers do use different conventions supports the need for
standardisation.
Dr. Jack Crosbie
Associate Professor
School of Physiotherapy
University of Sydney
PO Box 170, LIDCOMBE
NSW 2141
AUSTRALIA
--- o O o ---
J.Crosbie@cchs.su.edu.au
Tel: Intl + 612 646 6549
Fax: Intl + 612 646 6601
fairly intense. I can certainly appreciate the arguments of those who favour
the definitions proposed by Professor Hatze and Dr. Kirtley, but I think it
is also reasonable to support the proposed convention on the basis that a
two dimensional axis definition would label the horizontal axis X and the
vertical Y. Expanding to a third dimension intuitively labels the mutually
orthogonal axis Z. Perhaps the very fact that different bodies and
manufacturers do use different conventions supports the need for
standardisation.
Dr. Jack Crosbie
Associate Professor
School of Physiotherapy
University of Sydney
PO Box 170, LIDCOMBE
NSW 2141
AUSTRALIA
--- o O o ---
J.Crosbie@cchs.su.edu.au
Tel: Intl + 612 646 6549
Fax: Intl + 612 646 6601