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feat: source-plane magnification maps — mesh and square-pixel - #691
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LensCalc.source_plane_magnification_from traces image sub-pixels and bins the image area into square source pixels; plot_magnification_source_plane colours a reconstruction's mesh by Mapper.mesh_magnification; plot_magnification_source_plane_grid plots the square-pixel map with constant-mu contours. Also drops the stray config colour-bar unit from plot_magnification_2d. Arc phase 8b (PyAutoArray#673). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This was referenced Nov 2, 2026
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Downstream: PyAutoLabs/PyAutoLens#816, workspace PyAutoLabs/autolens_workspace#615. |
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Summary
Cluster arc phase 8b (PyAutoArray#673). The source-plane counterpart of 8a's image-plane map: how much the lens magnifies each region of the source, summed over all of its images.
plot_magnification_source_plane(mapper, mass_obj=...)— a pixelized source's mesh coloured byMapper.mesh_magnification(log colour scale, caustics overlaid).LensCalc.source_plane_magnification_from(mask, ...)+plot_magnification_source_plane_grid(mass_obj, grid, ...)— the same map on square source pixels for parametric / MGE sources: image sub-pixels are traced and their area binned per source pixel.plot_magnification_2dshowed the config's brightness unit ("e- s^-1") on its colour bar; all three maps now passcb_unit="".Depends on PyAutoLabs/PyAutoArray#674 — merge that first.
API Changes
Three new public functions (one
LensCalcmethod, two plot functions);plot_magnification_2d's colour bar no longer shows a unit.See full details below.
Test Plan
test_autogalaxyfull suite: 1473 passed (with PyAutoArray#674)Full API Changes (for automation & release notes)
Added
LensCalc.source_plane_magnification_from(mask, source_shape_native=(50, 50), source_extent=None, sub_size=16) -> Array2Dautogalaxy.plot.plot_magnification_source_plane(mapper, mass_obj=None, grid=None, include_caustics=True, tangential_caustics=None, radial_caustics=None, vmin=None, vmax=None, title=..., colormap="default", output_path=None, output_filename="magnification_source_plane", output_format=None, ax=None)autogalaxy.plot.plot_magnification_source_plane_grid(mass_obj, grid, source_shape_native=(50, 50), source_extent=None, sub_size=16, contour_levels=(2, 5, 10, 20, 50, 100), include_caustics=True, ..., ax=None)Changed
plot_magnification_2d— colour bar no longer appends the config unit.Generated by the PyAutoLabs agent workflow.
🤖 Generated with Claude Code