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[area-basic] plotnine implementation #224
Description
Activity
- added a parent issue
on Dec 6, 2025 Attempt 1/3
Technical Approach
- Imports:
import pandas as pd, from plotnine import aes, element_line, element_text, geom_area, geom_line, ggplot, labs, theme, theme_minimal - Plot function:
ggplot - Config: color=#306998
Status
- PR: feat(plotnine): implement area-basic #282
- File:
plots/plotnine/area/area-basic/default.py - Workflow: 19995637996
- Imports:
🧪 Test Results (PR #282)
Python:
📊 Plot Preview (Python 3.13)
plotnine (default) - UPDATE
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🧪 Test Results (PR #282)
Python:
📊 Plot Preview (Python 3.13)
plotnine (default) - UPDATE
Before After View version history (6 versions)
🤖 Generated by gen-preview workflow
AI Review - Attempt 1/3
Quality Evaluation
Evaluator Score Verdict Claude 92/100 approve Criteria Checklist
Visual Quality
- VQ-001: Axes labeled correctly - "Month" and "Sales" are meaningful labels
- VQ-002: Visual clarity - Grid is subtle with dashed lines at alpha=0.3
- VQ-003: Elements clear - Area fill with alpha=0.5, line visible with good contrast
- VQ-004: No overlap - All labels, ticks, and text are readable without collision
- VQ-005: Legend present - N/A (single series, no legend needed)
- VQ-006: Colorblind safe - Steelblue color palette is accessible
- VQ-007: Image size - 16:9 aspect ratio (16x9 inches at 300 DPI)
- VQ-008: Title - "Monthly Sales Trend" is centered and clear
Code Quality
- CQ-001: Type hints present - Uses
pd.DataFrame,str,Optional, etc. - CQ-002: Docstring - Complete Google-style with Args, Returns, Raises, Example
- CQ-003: Input validation - Validates empty data and missing columns
- CQ-004: Clear error messages - Shows available columns in KeyError
- CQ-005: No magic numbers - All values parameterized with defaults
Correctness
- CR-001: Data accurate - Correctly maps x/y columns to area chart
- CR-002: Spec compliance - Implements basic area chart per specification
- CR-003: Edge cases - Handles empty data, missing columns, sorts data by x
Issues Found
None - implementation is solid.
Strengths
- Clean plotnine ggplot2-style syntax following library conventions
- Comprehensive parameter customization (colors, alpha, line width, etc.)
- Smart default values that produce visually appealing output
- Data sorting ensures proper area rendering
- Minimal theme provides clean, professional appearance
Verdict: APPROVED
- added a commit that references this issue
on Dec 6, 2025 Merged
plotnine implementation for
area-basichas been merged!
🚀 Auto-merged by pyplots CI
[area-basic] plotnine Implementation
Parent Issue: #201
Spec:
specs/area-basic.mdLibrary: plotnine
Feature Branch:
plot/area-basicAttempt History
Attempts will be documented below as comments.