class BoundingBox

Geographical Bounding Box¶ ↑

A bounding box is a geographical box determined by the configuration file.

It is currently not being implemented in queries because the import scripts are cutting the excess data away, so there is nothing outside of the bounding box in the database.

However, queries are capable of only querying within the bounding box, so it is possible to change the box throughout calculations to get a subset of the data – change to @active = true

Attributes

active[R]

bbox_array[R]

bottom_left[R]

top_right[R]

Public Class Methods

new(args=nil) click to toggle source

# File models/AnalysisWindow.rb, line 257
def initialize(args=nil)
        if args.nil?
                @active = false
        elsif args[:bbox].is_a? String
                @bbox_array = args[:bbox].split(',')

                @bottom_left = [ bbox_array[0].to_f, bbox_array[1].to_f ]
                @top_right   = [ bbox_array[2].to_f, bbox_array[3].to_f ]
        
        else
                @bottom_left = args[:bottom_left]
                @top_right   = args[:top_right]
        end

        post_initialize
end

Public Instance Methods

geojson_geometry() click to toggle source

# File models/AnalysisWindow.rb, line 294
def geojson_geometry
        return {type: "Polygon", 
                        coordinates[[[  bottom_left,
                                                   [bottom_left[0], top_right[1]],
                                                    top_right,
                                                   [top_right[0],   bottom_left[1]],
                                                    bottom_left ]]}
end

geometry() click to toggle source

Returns an array of the bounding box parameters.

# File models/AnalysisWindow.rb, line 290
def geometry
        mongo_format["$box"].flatten
end

mongo_format() click to toggle source

Going to need some pretty robust methods to pass to Mongo queries, but painless for now

# File models/AnalysisWindow.rb, line 283
def mongo_format
        h = {}
        h["$box"] = [bottom_left, top_right]
        return h
end

post_initialize() click to toggle source

# File models/AnalysisWindow.rb, line 274
def post_initialize
        unless (bottom_left.is_a? Array) and (top_right.is_a? Array)
                @active = false
        else
                @active = false #Active is always set to false and not incorporated in current queries
        end
end