Mapping Toolbox™

isShapeMultipart - True, if polygon or line has multiple parts

Syntax

tf = isShapeMultipart(xdata, ydata)

Description

tf = isShapeMultipart(xdata, ydata) returns 1 (true) if the polygon or line shape specified by xdata and ydata consists of multiple NaN-separated parts (i.e. has inner or multiple polygon rings or multiple line segments). The coordinate arrays xdata and ydata must match in size and have identical NaN locations.

Examples

isShapeMultipart([0 0 1],[0 1 0])

ans =
     0

isShapeMultipart([0 0 1 NaN 2 2 3 3],[0 1 0 NaN 2 3 3 2])

ans =
     1

load coast
isShapeMultipart(lat, long)

ans =
     1 

S = shaperead('concord_hydro_area');
isShapeMultipart( S(1).X,  S(1).Y)

ans =
     0

isShapeMultipart(S(14).X, S(14).Y)

ans =
     1

See Also

polysplit

ispolycw

km2deg, nm2deg, sm2deg