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Matplotlib-inspired charting for .NET — SVG/PNG/PDF output, 74 series types, fluent API, streaming & realtime, and first-class support for Blazor, MAUI, Avalonia, Uno Platform, ASP.NET Core, and JS frameworks.
Current version: 1.4.1 · NuGet · Changelog · License: MIT
v1.4.1 — Interactive Polish. Closes the interactivity gap with matplotlib:
- Native 3D rotation — right-drag on 3D axes rotates the camera (azimuth/elevation). Arrow keys ±5°, Home resets. Works on all native controls.
- Rectangle zoom — Ctrl+drag draws a zoom box. Crosshair — vertical + horizontal lines at mouse position. Span select — Alt+drag selects X-range.
- View history — back/forward through zoom/pan snapshots (50-entry stack). Data cursor — click to pin annotation callout.
- Toolbar state model —
InteractionToolbarwith Pan/Zoom/Rotate3D/Home/DataCursor buttons. Platform-agnostic.- Axis polish —
.WithYTicksMirrored()ticks on both sides..WithTightMargins()data touches spines.- 9 interaction modifiers (was 6). 4 234 tests green across 11 test projects.
For earlier releases, see the full CHANGELOG or the Roadmap.
MatPlotLibNet is built for .NET developers who need charting that fits naturally into their existing stack — no JavaScript framework, no third-party SaaS, no extra runtime.
| You are… | MatPlotLibNet gives you… |
|---|---|
| Blazor / ASP.NET Core developer | Drop-in <MplChart> and <MplLiveChart> components; SignalR push; REST endpoint — all wired with standard DI |
| Avalonia developer | Native MplChartControl via SkiaSharp — IsInteractive="True" for pan / zoom / reset / brush-select, no WebView |
| Uno Platform developer | Native MplChartElement via SkiaSharp — Windows, Android, iOS, macCatalyst from one codebase |
| MAUI developer | Native MplChartView control via Microsoft.Maui.Graphics — no WebView |
| Data scientist / analyst | Inline SVG in Polyglot Notebooks or Jupyter; 74 series types; MatPlotLibNet.DataFrame for plotting, 16 financial indicators, and polynomial regression directly from Microsoft.Data.Analysis.DataFrame column names |
| Financial / trading app developer | Candlestick, OHLC, 13 technical indicators (SMA, EMA, RSI, MACD, Bollinger, Stochastic, …), backtesting panels |
| Full-stack .NET + JS developer | TypeScript clients for Angular, React, and Vue — same SignalR hub, same chart definitions |
| Backend / headless pipeline | Render SVG, PNG, PDF, or animated GIF server-side with zero UI dependencies |
These are excellent WinForms / WPF / MAUI renderers. MatPlotLibNet targets the web and server first: SVG rendered on the server, pushed to any browser client over SignalR. No canvas, no WebAssembly boot cost, no browser rendering differences.
Plotly.NET emits JavaScript that runs in the browser. MatPlotLibNet renders entirely in .NET — the browser receives finished SVG. That means no JS dependency, consistent output, inline SVG in the DOM (CSS-styleable, accessible, print-quality), and rendering that scales with your server hardware.
Commercial libraries with per-developer or per-app licensing. MatPlotLibNet is MIT — free for any use, open-source or commercial, with no copyleft conditions.
| MatPlotLibNet | |
|---|---|
| Rendering | Server-side SVG — zero client cost |
| Output | SVG, PNG, PDF, JSON, animated GIF |
| Native controls |
MplChartControl (Avalonia 12), MplChartElement (Uno Platform) — SkiaSharp, no WebView |
| Real-time | SignalR push + streaming series with ring buffers, 11 incremental indicators, throttled re-rendering |
| Series types | 74 — including 12 3D, 4 streaming, polar, financial, hierarchical, Sankey, vector |
| Math text |
$\frac{a}{b}$, $\sqrt{x}$, $\hat{y}$, $\mathbb{R}$ — 96 symbol mappings |
| Performance | AVX SIMD coordinate transform, parallel subplot rendering |
| License | MIT — no copyleft, free for any use |
| Dependencies | Zero for SVG; SkiaSharp opt-in for PNG/PDF/GIF/native controls |
dotnet add package MatPlotLibNetPlt.Create()
.WithTitle("Hello MatPlotLibNet")
.Plot(x, y, s => { s.Color = Color.Blue; s.Label = "Data"; })
.WithLegend()
.Save("chart.svg");
| Resource | Contents |
|---|---|
| Playground | Try charts live in your browser — pick an example, change theme/size, see the SVG update instantly |
| Cookbook | Code examples with rendered images — copy, paste, chart |
| API Reference | Full API documentation generated from XML doc comments |
| Page | Contents |
|---|---|
| Getting Started | Installation, quick start, output formats (SVG/PNG/PDF/JSON/GIF) |
| Fluent Cheatsheet | One-page reference for Plt / FigureBuilder / AxesBuilder — ships with v1.1.4 |
| Package Map | All 11 NuGet packages + 3 JS packages explained |
| Notebooks | Polyglot Notebooks + Jupyter — inline SVG, Display(), tips |
| Chart Types | All 74 series types with code examples |
| Styling | Themes, colors, colormaps, rcParams, PropCycler |
| Advanced | Layouts, date axes, math text, animations, real-time charts |
| Streaming | New in v1.4.0 — ring buffers, StreamingFigure, axis scaling, 11 streaming indicators, platform controls |
| Interactive Controls | Avalonia + Uno native controls, managed interaction layer, server mode |
| Bidirectional SignalR |
New in v1.2.0 — server-authoritative interactive charts, event hierarchy, FigureRegistry, hub wiring |
| Benchmarks | SVG rendering, SIMD transforms, indicators, JSON, PNG/PDF |
| Roadmap | Version history; v1.3.0 complete |
| Contributing | How to build, test, and contribute |
| Series types | 74 — line, scatter, bar, financial, statistical, 12 3D, 4 streaming, polar, hierarchical, Sankey, vector |
| Output formats | SVG (built-in), PNG, PDF, JSON, animated GIF |
| Platforms | .NET 10 / .NET 8, Blazor, Avalonia, Uno Platform, MAUI, ASP.NET Core, Angular, React, Vue, Jupyter |
| Native controls |
MplChartControl (Avalonia 12), MplChartElement (Uno/WinUI 3) — SkiaSharp, no WebView |
| Real-time | SignalR push + bidirectional interaction (zoom, pan, reset, legend toggle, brush-select, hover) |
| Math text | LaTeX-like inline math: $\frac{a}{b}$, $\sqrt{x}$, $\hat{y}$, $\mathbb{R}$, $\alpha^{2}$ — 96 symbol mappings |
| Date axes | Auto tick selection from years down to seconds |
| Layout | Constrained layout engine — auto-computes margins from text extents |
| Transform | AVX SIMD single-pass coordinate transform — up to 11.8× faster than naive |
| Packages | 11 NuGet + 3 npm — core, Skia, Blazor, AspNetCore, Avalonia, Uno, MAUI, DataFrame, Interactive, GraphQL, Notebooks |
| Tests | 4,234 tests across 11 test projects — including 146 dual-theme matplotlib fidelity tests pixel-verified against matplotlib 3.10.8 |