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HTML5 backends for Matplotlib compatible with Pyodide

Project description

matplotlib-pyodide

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HTML5 backends for Matplotlib compatible with Pyodide

This package includes two matplotlib backends,

  • the wasm_backend which from allows rendering the Agg buffer as static images into an HTML canvas
  • an interactive HTML5 canvas backend html5_canvas_backend described in this blog post

Installation

This package will be installed as a dependency when you load matplotlib in Pyodide.

Usage

To change the backend in matplotlib,

  • for the wasm backend,
    import matplotlib
    matplotlib.use("module://matplotlib_pyodide.wasm_backend")
    
  • for the interactive HTML5 backend;
    import matplotlib
    matplotlib.use("module://matplotlib_pyodide.html5_canvas_backend")
    

By default, matplotlib figures will be rendered inside a div that's appended to the end of document.body. You can override this behavior by setting document.pyodideMplTarget to an HTML element. If you had an HTML element with id "target", you could configure the backend to render visualizations inside it with this code:

document.pyodideMplTarget = document.getElementById('target')

For more information see the matplotlib documentation.

License

pyodide-cli uses the Mozilla Public License Version 2.0.

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