`MatplotlibChart`¶

Render a Matplotlib figure as reviewed static SVG or image output.


Import	`from hedron import MatplotlibChart`
Distribution	`hedron-charts[matplotlib]`
Backend activity	No
Normal render mode	`RenderMode.FRAGMENT`

Live demo¶

MatplotlibChart outputAccessible static preview with a text conclusion.

The preview is a local docs simulation (not a running Hedron server). Interactive demos show a “Simulated HTMX” trace when applicable.

Install the optional provider before importing this component:

pip install "hedron-charts[matplotlib]>=0.1.0,<0.2"

Basic use¶

from hedron import MatplotlibChart

component = MatplotlibChart(fig, title='Latency distribution', description='Most requests complete below 200 ms.')

Compose under Page for full documents, or return from a fragment route for HTMX swaps.

How it works¶

The adapter compiles the figure server-side and renders inert output, avoiding a browser plotting runtime. SVG passes active-content rejection and output limits.

This component's core behavior is server-rendered HTML and does not require a browser runtime. The preview is ordinary semantic HTML, so keyboard, form, link, and disclosure behavior comes from the platform.

Constructor and parameters¶

MatplotlibChart(figure, *, title=None, description=None, alt=None, waiver=None, fmt='svg')

Parameter	Type	Meaning
`figure`	`Matplotlib Figure`	Completed figure.
`title / description / alt`	`str \| None`	Accessible metadata.
`waiver`	`str \| None`	Reviewed exception.
`fmt`	`str`	Static output format.

Composition and backend behavior¶

Keep MatplotlibChart at the smallest semantic boundary. Fragment routes should return only the replaced region and preserve stable target IDs across success, validation, empty, loading, and error responses.

This component is primarily presentational; keep any mutation on an explicit action or component route.

Accessibility¶

Do not rely only on labels embedded in a dense plot; provide a description and data summary.

Security¶

Escaping and SafeUrl / TrustedHtml are framework concerns; authorization and data exposure remain application code. Redact secrets before rendering.

Common mistakes¶

Close figures after use in long-running processes and bound image dimensions and complexity.
Do not copy docs-preview JavaScript into an application server.

Testing¶

from hedron import RenderMode, render

result = render(component, mode=RenderMode.FRAGMENT)
assert result.html
assert not result.diagnostics

All component demos · Built-in API · Testing

MatplotlibChart¶