x::AbstractVector
y::AbstractVector
y2::AbstractVector
group::AbstractVector
stacked::Bool = false
horizontal::Bool = false
normalize::Bool = false

using Vega

x = [1, 2, 3, 4, 5]
y = [1, 2, 3, 2, 1]

barplot(x = x, y = y)

using Vega

x = [1, 2, 3, 4, 5]
y = [1, 2, 3, 2, 1]

barplot(x = x, y = y, horizontal = true)

using Vega

x = 1:20
y = rand(20)
group = [round(val/10) for val in x]

barplot(x = x, y = y, group = group)

using Vega

x = [0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9]
y = [28, 43, 81, 19, 52, 24, 87, 17, 68, 49, 55, 91, 53, 87, 48, 49, 66, 27, 16, 15]
g = [0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1]

a = barplot(x = x, y = y, group = g, stacked = true)
colorscheme!(a, palette = ("Greens", 3))

using Vega

x = [0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9]
y = [28, 43, 81, 19, 52, 24, 87, 17, 68, 49, 55, 91, 53, 87, 48, 49, 66, 27, 16, 15]
g = [0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1]

a = barplot(x = x, y = y, group = g, stacked = true, normalize = true, horizontal = true)
hover!(a, opacity = 0.75)