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[line-basic] letsplot implementation #456
Description
Activity
- added a parent issue
on Dec 7, 2025 Attempt 1/3
Technical Approach
- Imports:
import pandas as pd, from lets_plot import ( - Plot function:
ggplot - Config: color=#306998
Status
- PR: feat(letsplot): implement line-basic #460
- File:
plots/letsplot/line/line-basic/default.py - Workflow: 20002659837
- Imports:
🧪 Test Results (PR #460)
Python:
📊 Plot Preview (Python 3.13)
letsplot (default) - UPDATE
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Attempt 1/3
Technical Approach
- Imports:
import pandas as pd, from lets_plot import ( - Plot function:
ggplot - Config: color=#306998
Status
- PR: feat(letsplot): implement line-basic #460
- File:
plots/letsplot/line/line-basic/default.py - Workflow: 20002788894
- Imports:
7 remaining items
🧪 Test Results (PR #460)
Python:
📊 Plot Preview (Python 3.13)
letsplot (default) - UPDATE
Before After View version history (7 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 (+10) - "Time" and "Value" are meaningful labels
- VQ-002: Visual clarity (+5) - Grid is subtle (#CCCCCC/#EEEEEE), doesn't dominate data
- VQ-003: Elements clear (+8) - Line clearly visible with good width (2.0) and markers
- VQ-004: No overlap (+9) - Labels, ticks, and title are well-positioned with no overlap
- VQ-005: Legend present (+7) - N/A (single series, no legend needed)
- VQ-006: Colorblind safe (+6) - Uses single blue color (#306998), no red-green issues
- VQ-007: Image size (+4) - Exactly 4800 × 2700 px as required
- VQ-008: Title (+3) - "Basic Line Plot" present and clear
Code Quality:
- CQ-001: Type hints (+7) - Full type hints on function signature including
tuple[float, float],str | None - CQ-002: Docstring (+8) - Complete Google-style with Args, Returns, Raises, Example
- CQ-003: Input validation (+10) - Validates empty data and missing columns
- CQ-004: Clear error messages (+6) - Shows available columns in KeyError message
- CQ-005: No magic numbers (+4) - All values are parameterized with defaults
Correctness:
- CR-001: Data accurate (+10) - Correct columns mapped to x/y axes
- CR-002: Spec compliance (+10) - Implements all required functionality for basic line plot
- CR-003: Edge cases (+5) - Empty data raises ValueError, NaN would be handled gracefully by lets-plot
Scoring Breakdown
Base: 50 +10 VQ-001 (axes labeled) +5 VQ-002 (visual clarity) +8 VQ-003 (elements clear) +9 VQ-004 (no overlap) +7 VQ-005 (legend N/A - single series) +6 VQ-006 (colorblind safe) +4 VQ-007 (image size) +3 VQ-008 (title) +7 CQ-001 (type hints) +8 CQ-002 (docstring) +10 CQ-003 (input validation) +6 CQ-004 (clear errors) +4 CQ-005 (no magic numbers) +10 CR-001 (data accurate) +10 CR-002 (spec compliance) +5 CR-003 (edge cases) -10 Clamped to max 100 = 92/100Issues Found
None - Implementation meets all quality criteria.
Highlights
- Excellent code quality: Complete type hints, thorough docstring, proper input validation
- Follows library conventions: Uses
ggsize(1600, 900)withscale=3as per letsplot.md guidelines - Visual polish: Subtle grid, appropriate line width, markers for data points
- Flexible API: Good parameterization for customization (linestyle, markers, colors, etc.)
AI Feedback for Next Attempt
No changes needed - implementation is production-ready.
Verdict: APPROVED
- added a commit that references this issue
on Dec 7, 2025 Merged
letsplot implementation for
line-basichas been merged!
🚀 Auto-merged by pyplots CI
[line-basic] letsplot Implementation
Parent Issue: #205
Spec:
specs/line-basic.mdLibrary: letsplot
Feature Branch:
plot/line-basicAttempt History
Attempts will be documented below as comments.