POSC Specifications
Version 3.0
Epicentre Standard Values
ref_axis_orientation

ref_axis_orientation

Standard Instance Values

identifier description source _content source version status
        ref _version .identifier  
north The axis is oriented so that positive is in the north direction. POSC POSC epicentre 3.0 current
east The axis is oriented so that positive is in the east direction. POSC POSC epicentre 3.0 current
south The axis is oriented so that positive is in the south direction. POSC POSC epicentre 3.0 current
west The axis is oriented so that positive is in the west direction. POSC POSC epicentre 3.0 current
up The axis is oriented so that positive is in the upward direction. That is, the dot product of the tangent to the axis at the origin with a strictly vertical vector is positive. POSC POSC epicentre 3.0 current
down The axis is oriented so that positive is in the downward direction. That is, the dot product of the tangent to the axis at the origin with a strictly vertical vector is negative. POSC POSC epicentre 3.0 current
north-east The axis is oriented so that positive is predominantly in the north-east direction. POSC POSC epicentre 3.0 current
north-west The axis is oriented so that positive is predominantly in the north-west direction. POSC POSC epicentre 3.0 current
south-west The axis is oriented so that positive is predominantly in the south-west direction. POSC POSC epicentre 3.0 current
south-east The axis is oriented so that positive is predominantly in the south-east direction. POSC POSC epicentre 3.0 current
northerly The axis is oriented so that positive is predominantly in the north direction, although the actual direction may vary slightly from north. POSC POSC epicentre 3.0 current
easterly The axis is oriented so that positive is predominantly in the east direction, although the actual direction may vary slightly from east. POSC POSC epicentre 3.0 current
southerly The axis is oriented so that positive is predominantly in the south direction, although the actual direction may vary slightly from south. POSC POSC epicentre 3.0 current
westerly The axis is oriented so that positive is predominantly in the west direction, although the actual direction may vary slightly from west. POSC POSC epicentre 3.0 current
right-handed The axis is oriented with respect to the two previous axes so that the three axes form a right-handed system. In particular, the dot product of the tangent at the zero location of this axis with the cross product of the other two axes is positive. POSC POSC epicentre 3.0 current
left-handed The axis is oriented with respect to the two previous axes so that the three axes form a left-handed system. In particular, the dot product of the tangent at the zero location of this axis with the cross product of the other two axes is negative. POSC POSC epicentre 3.0 current

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