class Colors::ListedColormap
Attributes
colors[R]
Public Class Methods
new(colors, name: :from_list, n_colors: nil)
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Calls superclass method
Colors::Colormap::new
# File lib/colors/listed_colormap.rb, line 3 def initialize(colors, name: :from_list, n_colors: nil) @monochrome = false if n_colors.nil? @colors = Array.try_convert(colors) n_colors = @colors.length else case colors when String, Symbol @colors = Array.new(n_colors) { colors } @monochrome = true when Enumerable @colors = colors.cycle.take(n_colors) @monochrome = @colors.all? {|x| x == @colors[0] } else begin gray = Float(colors) rescue TypeError, ArgumentError raise ArgumentError, "invalid value for `colors` (%p)" % colors else @colors = Array.new(n_colors) { gray } end @monochrome = true end end @colors.freeze super(name, n_colors) end
Private Instance Methods
init_colormap()
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# File lib/colors/listed_colormap.rb, line 35 def init_colormap @lookup_table = self.colors.map {|color| Utils.make_color(color).to_rgba } @initialized = true update_extreme_colors end
make_reverse_colormap(name)
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# File lib/colors/listed_colormap.rb, line 41 def make_reverse_colormap(name) ListedColormap.new(self.colors.reverse, name: name, n_colors: self.n_colors) end