174
4 Geometry standards
(x, y) order
,-----.,..-----,-----.,..-----, I
I
I
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f---- ' : ----~
L----.l:::":~--..l---J
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L ____ 1 _____ 1 _____ 1. ____ ..1
(y, x) order
[ffi-~T~-:r~r-]
! ! \!
! !
~____ I ____ \ _____ : ____ ~
!
! \ ! !
t-_.. -- --t-'- . . 1 .. --1
I
I
I
I
l __________ l _____ l _____ J
Fig. 4.76. Morton order (IS053 2002)
(x, y) order
(x, -y) order
Fig. 4.77. Hilbert order (IS053 2002)
4.5.4 Operations in ISO 19123
Table 4.2. Operations in ISO 19123
CV _ Coverage
CV _DiscreteCoverage
CV _ DiscretePointCoverage
CV _ DiscreteCurveCoverage
CV _ DiscreteSurfaceCoverage
CV _ DiscreteSolidCoverage
CV _ DiscreteGridPointCoverage
CV _ ContinuousCoverage
CV _ ThiessenPolygonCoverage
CV _ ContinuousQuadrilateralGridCoverage
CV _ HexagonalGridCoverage
CV _ TINCoverage
CV _ SegmentedCurveCoverage
(x, -y) order
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1 _____ ..&.. _____ 1 _____ ..&..-____ 1
(y, x) order
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"0
=
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x
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(-y, -x) order
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!
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t- :-- --t-~ . . ! .. --1
L _____ l _____ l _____ L ____ J
(y, -x) order
.....
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:.:::
x
x
x
x
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x