Limitations

This page compares current pontink converter/editor support against core Matplotlib feature families from the official docs.

Reference baseline: - Plot types overview - API reference

Feature Comparison

Matplotlib area	Example docs	Current support in pont.ink	Details
Subplots / multi-axes layouts	pyplot.subplots	Partial	The web app supports subplots, but the Python converter still exports only the first visible axes from a Matplotlib figure.
Line plots	Axes.plot	Supported	Converted to datasets/layers and editable in data editor.
Scatter plots	Axes.scatter	Supported	Converted to editable datasets/layers.
Error bars	Axes.errorbar	Partial	Not imported as native errorbar artists, but supported through uncertainty columns (x_uncertainty, y_uncertainty).
Text annotations	Axes.text	Partial	Data-space text is converted. Figure-relative or axes-relative text is skipped.
Arrow annotations	Axes.annotate	Partial	The web app supports arrow annotations, but the Python converter does not reconstruct arbitrary Matplotlib arrows yet.
Horizontal / vertical guide lines	Axes.axhline, Axes.axvline	Partial	The web app supports hline / vline annotations, including fit-parameter bindings, but existing Matplotlib guide lines are not imported as native annotations yet.
Figure suptitle	Figure.suptitle	Supported	Figure title text, font size, and position are exported.
Bar charts	Axes.bar	Not yet	Skipped by current converter.
Histograms	Axes.hist	Not yet	Skipped by current converter.
Image/heatmap artists	Axes.imshow	Not yet	Skipped by current converter.
3D plotting	mplot3d toolkit	Not yet	3D axes are not converted.
Custom artist subclasses	Artist API	Not yet	Converter does not map arbitrary custom artists.

When unsupported artists are present, conversion continues and warnings are returned.

Editor capabilities beyond converter coverage

Some features are available once a plot is inside pont.ink even though they are not reconstructed automatically from raw Matplotlib artists:

• multi-subplot figure editing
• draggable figure title and axis labels
• arrow annotations
• hline / vline annotations
• fit-driven guide lines via fit-parameter bindings

Export Metadata Notes

• Embedded pont.ink document metadata is supported for png, svg, pdf, ps, and eps.
• Other formats can still be exported, but metadata embedding is skipped and reported as a warning.