Class: Satellite::Landsat8::CoordinateConverterService

Inherits:
Object
  • Object
show all
Includes:
HTTParty
Defined in:
lib/satellite/landsat8/coordinate_converter_service.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(lat, lon) ⇒ CoordinateConverterService

Returns a new instance of CoordinateConverterService.



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# File 'lib/satellite/landsat8/coordinate_converter_service.rb', line 11

def initialize(lat, lon)
  self.lat = lat
  self.lon = lon
end

Instance Attribute Details

#lat ⇒ Object

Returns the value of attribute lat.



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# File 'lib/satellite/landsat8/coordinate_converter_service.rb', line 9

def lat
  @lat
end

#lon ⇒ Object

Returns the value of attribute lon.



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# File 'lib/satellite/landsat8/coordinate_converter_service.rb', line 9

def lon
  @lon
end

Instance Method Details

#convert ⇒ Object 



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# File 'lib/satellite/landsat8/coordinate_converter_service.rb', line 16

def convert
  response = self.class.get('/query', {
    query: {
      where: "MODE='D'",
      geometry: "#{lon}, #{lat}",
      geometryType: 'esriGeometryPoint',
      spatialRel: 'esriSpatialRelIntersects',
      outFields: '*',
      returnGeometry: false,
      returnTrueCurves: false,
      returnIdsOnly: false,
      returnCountOnly: false,
      returnZ: false,
      returnM: false,
      returnDistinctValues: false,
      f: 'json'
    }.to_param
  })

  result = JSON.parse(response).dig('features', 0, 'attributes')
  "#{result['PATH'].to_s.rjust(3, '0')}#{result['ROW'].to_s.rjust(3, '0')}"
end