PlotMatrix.jl

A Julia package that mirrors the behaviour of MATLAB's plotmatrix using CairoMakie. It produces a grid of scatter plots and marginal histograms for every pair of dimensions in a multidimensional dataset.

Up to three datasets can be overlaid in the same figure for visual comparison.

Installation

using Pkg
Pkg.add(url="https://github.com/lukasfritsch/PlotMatrix.jl")

Example

using PlotMatrix

x = randn(500, 4)   # 500 observations, 4 variables
y = randn(300, 4) .+ 1.5
z = randn(300, 4) .- 1.5

# style = :compact (default)
fig_compact = plotmatrix(x, y, z;
    dimlabels     = ["A", "B", "C", "D"],
    style         = :compact,        # :compact | :full | :corr
    legend_labels = ["Group 1", "Group 2", "Group 3"],
    alphas = (0.7, 0.7, 0.7)
)

# style = :corr
fig_corr= plotmatrix(x, y, z;
    dimlabels     = ["A", "B", "C", "D"],
    style         = :corr,        # :compact | :full | :corr
    legend_labels = ["Group 1", "Group 2", "Group 3"],
    alphas = (0.7, 0.7, 0.7)
)

Options

Keyword	Default	Description
style	:compact	:compact (lower triangle), :full (all pairs), :corr (correlations in upper triangle)
dimlabels	column indices	Axis labels
palette	:auto	Color palette (Wong colors by default)
alphas	(1,1,1)	Opacity for each dataset
bins	30	Histogram bins
legend_position	:right	:right or :bottom
legend_labels	"data1", …	Legend entry labels
markersize	4	Scatter marker size