[box-basic] highcharts implementation

[github-actions]

[box-basic] highcharts Implementation

Parent Issue: #204
Spec: specs/box-basic.md
Library: highcharts
Feature Branch: plot/box-basic

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Attempt History

Attempts will be documented below as comments.

[github-actions]

Attempt 1/3

Technical Approach

• Imports: import tempfile, import time, import urllib.request
• Plot function: ScatterSeries
• Config: style=margin:0;, color=#306998

Status

• PR: feat(highcharts): implement box-basic #435
• File: plots/highcharts/boxplot/box-basic/default.py
• Workflow: 20002354213

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[github-actions]

🧪 Test Results (PR #435)

Python:

📊 Plot Preview (Python 3.13)

highcharts (default) - UPDATE

Before	After

View version history (6 versions)

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🤖 Generated by gen-preview workflow

[claude]

AI Review - Attempt 1/3

Quality Evaluation

Evaluator	Score	Verdict
Claude	87/100	approve

Criteria Checklist

• VQ-001: Axes labeled correctly (Y-axis "Value" visible, X-axis "Group" present)
• VQ-002: Visual Clarity - Grid is subtle (dotted lines, light color)
• VQ-003: Elements Clear - Box plots clearly visible with good contrast
• VQ-004: No Overlap - Labels and elements don't overlap
• VQ-005: Legend Present - N/A (single series type, legend correctly disabled)
• VQ-006: Colorblind Safe - Uses cyan/teal palette, no red-green issues
• VQ-007: Image Size - Uses 1600x900, not target 4800x2700 (minor)
• VQ-008: Title - "Basic Box Plot" is centered and clear
• CQ-001: Type hints present - All function parameters have type hints
• CQ-002: Docstring - Comprehensive Google-style with Args, Returns, Raises, Example
• CQ-003: Input Validation - Checks for empty data and missing columns
• CQ-004: Clear Error Messages - Shows available columns on KeyError
• CQ-005: No Magic Numbers - Uses configurable width/height parameters
• CR-001: Data Accurate - Correctly calculates Q1, median, Q3, IQR, whiskers, outliers
• CR-002: Spec Compliance - Implements box plot with groups, shows outliers as individual points
• CR-003: Edge Cases - Handles empty data, missing columns

Issues Found

1. VQ-007 PARTIAL: Image dimensions are 1600x900 instead of recommended 4800x2700. This is acceptable for web display but not optimal for high-resolution exports.

Strengths

• ✓ Correct statistical calculations (Q1, Q3, IQR, whiskers at 1.5×IQR)
• ✓ Outliers properly identified and displayed as red scatter points
• ✓ Follows Highcharts library guidelines: uses container="container", inline JS, highcharts-more.js for boxplot
• ✓ Clean tooltip formatting showing all quartile values
• ✓ Color-by-point enabled for visual distinction between groups
• ✓ Comprehensive input validation and error handling

AI Feedback for Next Attempt

N/A - Implementation meets quality threshold

Verdict: APPROVED

The implementation correctly creates a box-and-whisker plot with:

• Statistical distribution visualization across 4 groups
• Proper quartile calculations and whisker placement
• Outlier detection and display
• Clean, readable output

The minor image size deviation does not significantly impact the overall quality.