ChainsMakie.jl

Appearance

ridgeline ​

A ridgeline plot shows the densities of the samples for each parameter in a single axis by stacking them vertically.

Similar to the forestplot, this visualization does not contain information about each individual chain. Instead, it can provide a more concise overview of parameter distributions after the computational faithfulness of MCMC sampling has been validated.

julia
using ChainsMakie, CairoMakie
import MCMCChains: Chains
chains = Chains(randn(300, 2, 4), [:A, :B])
fig, ax, plt = ridgeline(chains)
fig

It is possible to plot a subset of the parameters by passing their names as the second argument:

julia
using ChainsMakie, CairoMakie
import MCMCChains: Chains
chains = Chains(randn(300, 3, 4), [:A, :B, :C])
ridgeline(chains, [:A, :B])
(Scene(1 children, 0 plots), Axis (1 plots), Plot{ChainsMakie.ridgeline, Tuple{Vector{Base.ReshapedArray{Float64, 1, AxisArrays.AxisMatrix{Float64, Matrix{Float64}, Tuple{AxisArrays.Axis{:iter, StepRange{Int64, Int64}}, AxisArrays.Axis{:chain, UnitRange{Int64}}}}, Tuple{}}}}})

Attributes ​

color ​

Controls the color of each density plot.

Defaults to the first color in Makie's wong_colors palette.

julia
using ChainsMakie, CairoMakie
import MCMCChains: Chains
chains = Chains(randn(300, 2, 4), [:A, :B])
fig, ax, plt = ridgeline(chains; color = :orange)
fig

strokewidth ​

Controls the strokewidth of the density plot's contour.

Defaults to 1.0.

julia
using ChainsMakie, CairoMakie
import MCMCChains: Chains
chains = Chains(randn(300, 2, 4), [:A, :B])
fig, ax, plt = ridgeline(chains; strokewidth = 2.0)
fig

strokecolor ​

Controls the strokecolor of the contour around each density plot.

Defaults to the first color in Makie's wong_colors palette.

julia
using ChainsMakie, CairoMakie
import MCMCChains: Chains
chains = Chains(randn(300, 2, 4), [:A, :B])
fig, ax, plt = ridgeline(chains; strokecolor = :black)
fig

alpha ​

Controls the opacity of each density plot.

Defaults to 0.4.

julia
using ChainsMakie, CairoMakie
import MCMCChains: Chains
chains = Chains(randn(300, 2, 4), [:A, :B])
fig, ax, plt = ridgeline(chains; color = :orange,
    strokecolor = :orange, strokewidth = 2.0, alpha = 0.6)
fig