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feat: reinstate title_prefix on all matplotlib subplot panel titles #332
Description
Overview
Analysis classes accept title_prefix: str = None, which is intended to prefix every matplotlib subplot panel title (e.g. "VIS " gives "VIS Data", "VIS Signal-To-Noise Map", etc. for Euclid VIS imaging). The parameter is accepted and stored in all Analysis and Plotter classes, but after a plot refactor the actual prefix logic was dropped — titles are now hardcoded strings in the *_plots.py functions, and title_prefix is never applied.
This issue reinstates the feature end-to-end.
Plan
- Add
title_prefix: str = Noneto allsubplot_*functions in PyAutoGalaxy and PyAutoLens*_plots.pyfiles - Inside each function apply the prefix to each panel title string before it reaches
plot_array() - Thread
self.title_prefixfrom everyPlottermethod down to those function calls - Cover all dataset types: imaging, interferometer, quantity, ellipse, galaxies, adapt (AG); imaging, interferometer, tracer, point, sensitivity, subhalo (AL)
Detailed implementation plan
Affected Repositories
- PyAutoGalaxy (primary)
- PyAutoLens
Work Classification
Library
Branch Survey
| Repository | Current Branch | Dirty? |
|---|---|---|
| PyAutoGalaxy | main | clean |
| PyAutoLens | main | clean |
Suggested branch: feature/title-prefix-subplots
Implementation Steps
-
PyAutoGalaxy
*_plots.py— addtitle_prefix: str = Noneto eachsubplot_*function. Apply with_pf = lambda t: f"{title_prefix}{t}" if title_prefix else tand wrap every literal title string:_pf("Data"),_pf("Convergence"), etc. Files:imaging/plot/fit_imaging_plots.py,interferometer/plot/fit_interferometer_plots.py,quantity/plot/fit_quantity_plots.py,galaxy/plot/galaxies_plots.py,galaxy/plot/galaxy_plots.py,galaxy/plot/adapt_plots.py,ellipse/plot/fit_ellipse_plots.py. -
PyAutoGalaxy
Plottermethods — update every call to a subplot function to passtitle_prefix=self.title_prefix. Files:analysis/plotter.py(galaxies,adapt_images),imaging/model/plotter.py(fit_imaging,fit_imaging_combined),interferometer/model/plotter.py,quantity/model/plotter.py,ellipse/model/plotter.py. -
PyAutoLens
*_plots.py— same pattern. Files:imaging/plot/fit_imaging_plots.py,interferometer/plot/fit_interferometer_plots.py,lens/plot/tracer_plots.py,lens/plot/sensitivity_plots.py,lens/plot/subhalo_plots.py,point/plot/fit_point_plots.py,point/plot/point_dataset_plots.py. -
PyAutoLens Plotter methods — pass
title_prefix=self.title_prefixwherever subplot functions are called. -
Tests — add/extend unit tests that set
title_prefix="TEST "and assert the prefix appears in thetitle=kwarg forwarded toplot_array(or by inspecting the axes title after a dry run).
Key Files
autogalaxy/imaging/plot/fit_imaging_plots.py— primary example;subplot_fittitles "Data", "Signal-To-Noise Map", "Model Image", "Residual Map", "Normalized Residual Map", "Chi-Squared Map"autogalaxy/analysis/plotter.py— basePlotterclass that storesself.title_prefixautogalaxy/imaging/model/plotter.py—PlotterImaging.fit_imaging()callsfit_imaging_plots.subplot_fit
Original Prompt
Click to expand starting prompt
Analysis classes can receive this: title_prefix: str = None, on the old code this meant the title of all figures of all images on matplotlib subplots had this suffix, for example "VIS " for euclid VIS imaging. The suffix plotting has been lost in the plot refactor, can you reinstate it?
Activity
Jammy2211 commentedon Apr 7, 2026
Shipped — 2026-04-07
PRs
Summary
Reinstated
title_prefixsupport across all subplot plot functions in PyAutoArray, PyAutoGalaxy, and PyAutoLens. The prefix is applied with an automatic trailing space so callers can pass"VIS"or"VIS "and always get"VIS Data". Thedataset.pngsubplot (imaging and interferometer),inversion_0_0.png, andimage_with_positions.pngall now receive the prefix. Over Sample Size panels indataset.pngare intentionally excluded.Session Notes
plot_inversion_reconstructionwas not passingis_subplot=Truetoapply_labels, causing rectangular pixelization panels to render with the wrong (oversized) title font.