require 'nyaplot'

plot = Nyaplot::Plot.new
bar = plot.add(:bar, ['Persian', 'Maine Coon', 'American Shorthair'], [10,20,30])

plot.show

plot.x_label("Species")
plot.y_label("Number")
plot.show

colors = Nyaplot::Colors.qual

bar.color(colors)
plot.show

df = Nyaplot::DataFrame.new({species: ['Persian', 'Maine Coon', 'American Shorthair'], number: [10,20,30]})

plot2 = Nyaplot::Plot.new
plot2.add_with_df(df, :bar, :species, :number) # x-> column :species, y-> column :number
plot2.show