Class: Charty::Plotters::ColorMapper

Inherits:
BaseMapper show all
Defined in:
lib/charty/plotters/relational_plotter.rb

Instance Attribute Summary collapse

Attributes inherited from BaseMapper

#plotter

Instance Method Summary collapse

Methods inherited from BaseMapper

#[], #initialize

Constructor Details

This class inherits a constructor from Charty::Plotters::BaseMapper

Instance Attribute Details

#levels ⇒ Object (readonly)

Returns the value of attribute levels.



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# File 'lib/charty/plotters/relational_plotter.rb', line 99

def levels
  @levels
end

#lookup_table ⇒ Object (readonly)

Returns the value of attribute lookup_table.



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# File 'lib/charty/plotters/relational_plotter.rb', line 99

def lookup_table
  @lookup_table
end

#map_type ⇒ Object (readonly)

Returns the value of attribute map_type.



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# File 'lib/charty/plotters/relational_plotter.rb', line 99

def map_type
  @map_type
end

#norm ⇒ Object (readonly)

Returns the value of attribute norm.



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# File 'lib/charty/plotters/relational_plotter.rb', line 99

def norm
  @norm
end

#order ⇒ Object (readonly)

Returns the value of attribute order.



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# File 'lib/charty/plotters/relational_plotter.rb', line 99

def order
  @order
end

#palette ⇒ Object (readonly)

Returns the value of attribute palette.



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# File 'lib/charty/plotters/relational_plotter.rb', line 99

def palette
  @palette
end

Instance Method Details

#inverse_lookup_table ⇒ Object 



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# File 'lib/charty/plotters/relational_plotter.rb', line 101

def inverse_lookup_table
  lookup_table.invert
end

#lookup_single_value(key) ⇒ Object 



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# File 'lib/charty/plotters/relational_plotter.rb', line 105

def lookup_single_value(key)
  if @lookup_table.key?(key)
    @lookup_table[key]
  elsif @norm
    # Use the colormap to interpolate between existing datapoints
    raise NotImplementedError,
          "Palette interpolation is not implemented yet"
    # begin
    #   normed = @norm.(key)
    # rescue ArgumentError, TypeError => err
    #   if key.respond_to?(:nan?) && key.nan?
    #     return "#000000"
    #   else
    #     raise err
    #   end
    # end
  end
end