Class: GeoRuby::SimpleFeatures::MultiPoint

Inherits:
GeometryCollection show all
Defined in:
lib/geo_ruby/simple_features/multi_point.rb

Overview

Represents a group of points (see Point).

Instance Attribute Summary

Attributes inherited from GeometryCollection

#geometries

Attributes inherited from Geometry

#srid, #with_m, #with_z

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from GeometryCollection

#==, #binary_representation, #bounding_box, from_geometries, #georss_gml_representation, #georss_simple_representation, #georss_w3cgeo_representation, #kml_representation, #m_range, #method_missing

Methods inherited from Geometry

#as_ewkb, #as_ewkt, #as_georss, #as_hex_ewkb, #as_hex_wkb, #as_kml, #as_wkb, #as_wkt, #bounding_box, #envelope, from_ewkb, from_ewkt, from_geojson, from_georss, from_georss_with_tags, from_hex_ewkb, from_kml, #m_range

Constructor Details

#initialize(srid = DEFAULT_SRID, with_z = false, with_m = false) ⇒ MultiPoint

Returns a new instance of MultiPoint.



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# File 'lib/geo_ruby/simple_features/multi_point.rb', line 8

def initialize(srid= DEFAULT_SRID,with_z=false,with_m=false)
  super(srid,with_z,with_m)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class GeoRuby::SimpleFeatures::GeometryCollection

Class Method Details

.from_coordinates(points, srid = DEFAULT_SRID, with_z = false, with_m = false) ⇒ Object

Creates a new multi point from a list of point coordinates : ((x,y)…(x,y))



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# File 'lib/geo_ruby/simple_features/multi_point.rb', line 54

def self.from_coordinates(points,srid= DEFAULT_SRID,with_z=false,with_m=false)
  multi_point= new(srid,with_z,with_m)
  multi_point.concat(points.collect {|point| Point.from_coordinates(point,srid,with_z,with_m)})
  multi_point
end

.from_points(points, srid = DEFAULT_SRID, with_z = false, with_m = false) ⇒ Object

Creates a new multi point from an array of points



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# File 'lib/geo_ruby/simple_features/multi_point.rb', line 47

def self.from_points(points,srid= DEFAULT_SRID,with_z=false,with_m=false)
  multi_point= new(srid,with_z,with_m)
  multi_point.concat(points)
  multi_point
end

Instance Method Details

#as_json(options = {}) ⇒ Object 



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# File 'lib/geo_ruby/simple_features/multi_point.rb', line 34

def as_json(options = {})
  {:type => 'MultiPoint',
   :coordinates => self.to_coordinates}
end

#binary_geometry_type ⇒ Object

:nodoc:



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# File 'lib/geo_ruby/simple_features/multi_point.rb', line 12

def binary_geometry_type #:nodoc:
  4
end

#points ⇒ Object 



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# File 'lib/geo_ruby/simple_features/multi_point.rb', line 16

def points
  @geometries
end

#text_geometry_type ⇒ Object

WKT geoemtry type



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# File 'lib/geo_ruby/simple_features/multi_point.rb', line 26

def text_geometry_type #:nodoc:
  "MULTIPOINT"
end

#text_representation(allow_z = true, allow_m = true) ⇒ Object

Text representation of a MultiPoint



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# File 'lib/geo_ruby/simple_features/multi_point.rb', line 21

def text_representation(allow_z=true,allow_m=true) #:nodoc:
  "(" + @geometries.collect{|point| point.text_representation(allow_z,allow_m)}.join("),(") + ")"
end

#to_coordinates ⇒ Object 



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# File 'lib/geo_ruby/simple_features/multi_point.rb', line 30

def to_coordinates
  points.map{|p| p.to_coordinates }
end

#to_json(options = {}) ⇒ Object Also known as: as_geojson

simple geojson representation TODO add CRS / SRID support?



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# File 'lib/geo_ruby/simple_features/multi_point.rb', line 41

def to_json(options = {})
  as_json(options).to_json(options)
end