dist_info

Network functions dist_info

syntax

• dist_info(arcs, points, [optional] maxSqrDist)

definition

The dist_info(arcs, points) function is used to get the distance between the point from the points and the CutPoint on the arc/polygon outline from the arcs. This is the same as the dist attribute from the connect_info function.

description

The arcs should contain unique geometries. Use the unique function to make a domain unit with unique geometries.

applies to

• data items arcs and points with fpoint or dpoint value type
• data item arcs with composition type arc or polygon. Be aware that if you connect points to polygons, use a split_polygon to avoid connecting to segments that separate different rings (lakes or islands) in a polygon.

conditions

The values type of arcs and points must match.

example

attribute<float32> dist2road (location) := dist_info(road/geometry, location/geometry);

road/geometry
{2 {399246, 112631}{398599, 111866}}
{3 {398599, 111866}{399495, 111924} {401801, 111524}}
{2 {401529, 114921}{398584, 114823}}

domain road, nr of rows = 3

location/geometry
{398600, 114903}
{398696, 111741}
{399138, 112601}
{399289, 114903}
{399476, 111803}
{401331, 115135}
{401729, 111353}
{401729, 112156}

domain location, nr of rows = 8

dist
79.42
131.00
63.09
56.51
119.52
220.47
180.79
610.40

domain location, nr of rows = 8

see also

• connect_info