Abscissa of a point or vector in the plane

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26.12.2 Abscissa of a point or vector in the plane

See Section 27.10.1 for abscissas in 3D geometry.

The abscissa command finds the abscissa (x-coordinate) of a point.

abscissa takes P, a point.
abscissa(P) returns the abscissa of P.

Examples

abscissa(point(1+2*i))

1

abscissa(point(i)-point(1+2*i))

−1

abscissa(1+2*i)

1

abscissa([1,2])

1

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