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[pie-basic] letsplot implementation #279
Description
Activity
- added a parent issue
on Dec 6, 2025 Attempt 1/3
Technical Approach
- Imports:
import pandas as pd, from lets_plot import ( - Plot function:
ggplot - Config: color=white
Status
- PR: feat(letsplot): implement pie-basic #377
- File:
plots/letsplot/pie/pie-basic/default.py - Workflow: 19995639840
- Imports:
🧪 Test Results (PR #377)
Python:
📊 Plot Preview (Python 3.13)
letsplot (default) - NEW
🤖 Generated by gen-preview workflow
AI Review - Attempt 1/3
Quality Evaluation
Evaluator Score Verdict Claude 88/100 approve Criteria Checklist
Visual Quality
- [N/A] VQ-001: Axes labeled correctly — Pie charts don't use axes
- VQ-002: Visual clarity — Clean design with
theme_void(), no distracting elements - VQ-003: Elements clear — Pie slices are clearly visible with good size, white stroke separates segments well
- VQ-004: No overlap — Legend positioned on right, no overlap with chart, text readable
- VQ-005: Legend present — Legend shows all 5 categories with correct color mapping
- VQ-006: Colorblind safe — Uses PyPlots.ai palette (blue, yellow, red, green, violet) - mostly safe, no pure red-green adjacent
- VQ-007: Image size — Correct 4800 × 2700 px (1600×900 scaled 3x)
- VQ-008: Title — "Market Share Distribution" is centered and clear
Code Quality
- [N/A] CQ-001: Type hints — Plot implementations follow KISS style (no functions)
- [N/A] CQ-002: Docstring — Plot implementations follow KISS style (no functions)
- [N/A] CQ-003: Input validation — Plot implementations use hardcoded example data per spec
- [N/A] CQ-004: Clear error messages — N/A for simple scripts
- CQ-005: No magic numbers — Colors defined in named constant
PYPLOTS_COLORS
Correctness
- CR-001: Data accurate — Uses correct category/value columns from spec example
- CR-002: Spec compliance — Shows 5 categories with correct proportions (35, 25, 20, 15, 5)
- [N/A] CR-003: Edge cases — N/A for example scripts with fixed data
Issues Found
None critical. Minor observations:
- The pie chart appears relatively small compared to the canvas size, but this is acceptable as it maintains clean proportions with the legend
Strengths
- Clean implementation using
geom_pie()withstat="identity"for pre-computed values - Proper use of
theme_void()for pie charts (removes unnecessary axes) - White stroke between slices improves readability
- Legend properly positioned and styled
- Follows lets-plot library conventions correctly
- Correct output dimensions (4800×2700px)
AI Feedback for Next Attempt
No changes needed - implementation meets all requirements
Verdict: APPROVED
The lets-plot implementation correctly creates a basic pie chart matching the specification. The code follows the KISS style guidelines, uses appropriate lets-plot idioms (
geom_pie,theme_void), and produces a clear, professional visualization.- added a commit that references this issue
on Dec 7, 2025 Merged
letsplot implementation for
pie-basichas been merged!
🚀 Auto-merged by pyplots CI
[pie-basic] letsplot Implementation
Parent Issue: #206
Spec:
specs/pie-basic.mdLibrary: letsplot
Feature Branch:
plot/pie-basicAttempt History
Attempts will be documented below as comments.