QuickCharts.jl

QuickCharts.jl is a lightweight Julia package for chart-oriented plotting with Cairo output.

It focuses on a compact set of figure-building tools: Chart for single plots, ChartGrid for composed layouts, VideoBuilder for frame-by-frame video export, and supporting types for colors, legends, annotations, and math-aware text rendering.

Highlights include:

• Named colors with underscore-free aliases such as :royal_blue and :royalblue.
• Color utilities such as lighten, darken, and built-in colormaps including :viridis and :magma.
• File export to .pdf, .png, .svg, .ps, plus .mp4 and .avi video generation.

Installation

Until QuickCharts.jl is registered, install it directly from the GitHub repository:

using Pkg
Pkg.add(url="https://github.com/NumericalForge/QuickCharts.jl")

Quick Start

using QuickCharts

x = collect(0:0.2:2π)
chart = Chart(
    size = (10cm, 7cm),
    title = "Trigonometric Curves",
    xlabel = "`x`",
    ylabel = "`y`",
    legend = :bottom_right,
)

add_line(chart, x, sin.(x); label = "`sin(x)`", mark = :circle)
add_line(chart, x, cos.(x); label = "`cos(x)`", color = lighten(:royalblue, 0.15))

save(chart, "chart.svg", "chart.pdf")

Video Export

using QuickCharts

x = collect(range(0, 2π; length = 120))
video = VideoBuilder(framerate = 12, freeze_scale = true, bounds_factor = 1.05)

for phase in range(0, 2π; length = 18)
    frame = Chart(
        size = (10cm, 7cm),
        title = "Phase Shift",
        xlabel = "`x`",
        ylabel = "`y`",
        legend = :top_right,
        background = :white,
    )

    add_line(frame, x, sin.(x .+ phase); color = :royalblue, label = "`sin(x + ϕ)`")
    add_line(frame, x, cos.(x .+ phase); color = Colormap(:viridis)(0.75), label = "`cos(x + ϕ)`")
    add_frame(video, frame)
end

save(video, "phase-shift.mp4")

Set freeze_scale=true when you want all frames to reuse the view from frame 1. Use bounds_factor>1 to add extra space around that frozen view.

Documentation

Online documentation is available at:

https://numericalforge.github.io/QuickCharts.jl/dev/

License

This project is licensed under the MIT License. See LICENSE.md for details.