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A diagnostic guide for fixing clipped labels, pixelated output, uneven subplot spacing, ignored figsize changes, and backend rendering differences in Matplotlib using constrained_layout, figsize, and DPI settings.
When a Matplotlib plot fails to appear or its labels overlap, the culprit is often a backend mismatch, a figure that’s too small, or tight_layout mis‑calculations. This guide walks through a step‑by‑step diagnostic checklist, fixes, and escalation paths to get your visualizations back on track.
matplotlib