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[histogram-basic] matplotlib implementation #490
Description
Activity
- added a parent issue
on Dec 7, 2025 Attempt 1/3
Technical Approach
- Imports:
import matplotlib.pyplot as plt, import numpy as np, import pandas as pd - Plot function:
ax.hist - Config: figsize=16, 9, color=#306998
Status
- PR: feat(matplotlib): implement histogram-basic #499
- File:
plots/matplotlib/hist/histogram-basic/default.py - Workflow: 20010151843
- Imports:
🧪 Test Results (PR #499)
Python:
📊 Plot Preview (Python 3.13)
matplotlib (default) - UPDATE
Before After View version history (9 versions)
🤖 Generated by gen-preview workflow
AI Review - Attempt 1/3
Quality Evaluation
Evaluator Score Verdict Claude 95/100 approve Criteria Checklist
Visual Quality
- VQ-001: Axes labeled correctly ("Value", "Frequency")
- VQ-002: Grid is subtle (y-axis only, alpha=0.3)
- VQ-003: Elements clear (alpha=0.8, steelblue bars with edge)
- VQ-004: No overlap (clean layout, tight_layout applied)
- VQ-005: Legend present - N/A (single series histogram)
- VQ-006: Colorblind safe (steelblue is safe)
- VQ-007: Image size correct (16:9 aspect ratio)
- VQ-008: Title present and clear ("Basic Histogram")
Code Quality
- CQ-001: Type hints present (all parameters and return type)
- CQ-002: Docstring complete (Args, Returns, Raises, Example)
- CQ-003: Input validation comprehensive (empty data, missing column, non-numeric, NaN)
- CQ-004: Clear error messages with context
- CQ-005: No magic numbers (all values parameterized)
Correctness
- CR-001: Data accurate (correct column used)
- CR-002: Spec compliance (matches histogram-basic requirements)
- CR-003: Edge cases handled (NaN values dropped gracefully)
Issues Found
None - implementation meets all quality criteria.
Strengths
- Comprehensive input validation with informative error messages
- Clean visual presentation with subtle grid and appropriate styling
- Well-documented with complete docstring including usage example
- Proper use of Axes methods as per matplotlib library rules
- Flexible API with sensible defaults and **kwargs passthrough
Verdict: APPROVED
- added a commit that references this issue
on Dec 7, 2025 Merged
matplotlib implementation for
histogram-basichas been merged!
🚀 Auto-merged by pyplots CI
[histogram-basic] matplotlib Implementation
Parent Issue: #206
Spec:
specs/histogram-basic.mdLibrary: matplotlib
Feature Branch:
plot/histogram-basicAttempt History
Attempts will be documented below as comments.