Oracle Spatial User's Guide and Reference - InfoLab

Figure 7–10 Clipping, Splitting, and Concatenating Geometric Segments
Start Point
M
s
Segment Direction
M
e
End Point
Segment Direction
Start Point
M
s
a. Segment Clipping
Segment 1
Segment 2
LRS Operations
In Figure 7–10, part a, a segment is created from part of a larger segment. The new
segment has its own start and end points, and the direction is the same as in the
original larger segment.
7.5.4 Splitting a Geometric Segment
You can create two new geometric segments by splitting a geometric segment, as
shown in Figure 7–10, part b. The direction of each new segment is the same as in
the original segment.
7.5.5 Concatenating Geometric Segments
b. Segment Splitting
c. Segment Concatenation
Segment 1
Segment 2
End Point
M
e
Note: In Figure 7–10 and several figures that follow, small gaps
between segments are used in illustrations of segment splitting and
concatenation. Each gap simply reinforces the fact that two
different segments are involved. However, the two segments (such
as segment 1 and segment 2 in Figure 7–10, parts b and c) are
actually connected. The tolerance (see Section 1.5.5) is considered in
determining whether or not segments are connected.
You can create a new geometric segment by concatenating two geometric segments,
as shown in Figure 7–10, part c. The geometric segments do not need to be spatially
Linear Referencing System 7-13