arc to segments

Details

Last Updated on Wednesday, 23 January 2013 20:23

syntax

• arc2segm(a)
  

definition

arc2segm(a) divides a sequence (arc or polygon) data item a into segments. The function results in a new domain unit with two subitems:

1. point: a point data item with the first point of each segment;
2. nexpoint: a point data item with the last point of each segment.

description

If a source arc data item contains intermediates, which need to become nodes in a network, the source item need to be divided into segments. Use the arc2segm function for this purpose.

applies to

Point data item with value types:

• FPoint
• DPoint

The composition type of the point data items is arc or polygon.

since version

5.15

example

unit<uint32> segments: expr = "arc2segm(road/line)";