Module: RGeo::Feature::LineString

Extended by:
Type
Includes:
Curve
Included in:
Cartesian::LineStringImpl, Line, LinearRing, Geographic::ProjectedLineStringImpl, Geographic::SphericalLineStringImpl
Defined in:
lib/rgeo/feature/line_string.rb

Overview

SFS 1.1 Description

A LineString is a Curve with linear interpolation between Points. Each consecutive pair of Points defines a Line segment.

Notes

LineString is defined as a module and is provided primarily for the sake of documentation. Implementations need not necessarily include this module itself. Therefore, you should not depend on the kind_of? method to check type. Instead, use the provided check_type class method (or === operator) defined in the Type module.

Constant Summary

Constants included from Type

Type::Instance

Instance Method Summary collapse

Methods included from Type

_add_subtype, check_type, each_immediate_subtype, extended, subtype_of?, supertype, type_name

Methods included from Curve

#end_point, #is_closed?, #is_ring?, #length, #start_point

Methods included from Geometry

#*, #+, #-, #==, #as_binary, #as_text, #boundary, #buffer, #contains?, #convex_hull, #crosses?, #difference, #dimension, #disjoint?, #distance, #envelope, #eql?, #equals?, #factory, #geometry_type, #intersection, #intersects?, #is_empty?, #is_simple?, #overlaps?, #relate, #relate?, #rep_equals?, #srid, #sym_difference, #touches?, #union, #within?

Instance Method Details

#num_points ⇒ Object

SFS 1.1 Description

The number of Points in this LineString.

Notes

Returns an integer.

Raises:



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# File 'lib/rgeo/feature/line_string.rb', line 34

def num_points
  raise Error::UnsupportedOperation, "Method LineString#num_points not defined."
end

#point_n(_n_) ⇒ Object

SFS 1.1 Description

Returns the specified Point N in this LineString.

Notes

Returns an object that supports the Point interface, or nil if the given N is out of range. N is zero-based. Does not support negative indexes.

Raises:



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# File 'lib/rgeo/feature/line_string.rb', line 48

def point_n(_n_)
  raise Error::UnsupportedOperation, "Method LineString#point_n not defined."
end

#points ⇒ Object

Returns the constituent points as an array of objects that support the Point interface.

Raises:



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# File 'lib/rgeo/feature/line_string.rb', line 55

def points
  raise Error::UnsupportedOperation, "Method LineString#points not defined."
end