feat(highcharts): implement indicator-rsi

[github-actions]

Implementation: indicator-rsi - highcharts

Implements the highcharts version of indicator-rsi.

File: plots/indicator-rsi/implementations/highcharts.py

Parent Issue: #3229

---

🤖 impl-generate workflow

[claude]

AI Review - Attempt 1/3

Image Description

The plot displays an RSI (Relative Strength Index) technical indicator chart with a clean professional appearance. The chart shows:

• Y-axis ranging from 0 to 100 (correct RSI scale)
• Overbought zone (70-100) shaded in light pink/red with "Overbought" label in red text
• Oversold zone (0-30) shaded in light green with "Oversold" label in green text
• Horizontal dashed threshold lines at 30 and 70
• RSI line rendered in blue with light blue area fill below
• X-axis showing dates from Jan 01 through May 27 (~6 months of data)
• Y-axis labeled "RSI Value"
• Title: "indicator-rsi · highcharts · pyplots.ai"
• Subtitle: "RSI (14-period) with Overbought/Oversold Zones"
• Legend in top-right corner showing "RSI (14)"
• Data shows RSI fluctuating mostly between 30-65, with a few touches near the oversold zone around early March

Critical Issue: Missing Implementation Code

WARNING: The implementation file highcharts.py was NOT committed to the branch. The workflow generated the plot image and metadata but failed to push the implementation code. The PR only contains metadata:

• plots/indicator-rsi/metadata/highcharts.yaml

The implementation file must be added to the PR before it can be merged.

Quality Score: 87/100

Note: Score based on visual review only - cannot verify code quality without implementation file.

Criteria Checklist

Visual Quality (35/40)

• VQ-01: Text Legibility (9/10) - Title, subtitle, axis labels all clearly readable. Tick labels slightly small but acceptable.
• VQ-02: No Overlap (8/8) - No overlapping text or elements
• VQ-03: Element Visibility (7/8) - RSI line clearly visible, area fill appropriate. Line could be slightly thicker.
• VQ-04: Color Accessibility (5/5) - Colorblind-safe palette: blue RSI line, pink/green zones (not red-green as primary differentiator - labels provide context)
• VQ-05: Layout Balance (4/5) - Good canvas utilization, slight excess whitespace at top
• VQ-06: Axis Labels (2/2) - Y-axis labeled "RSI Value", X-axis shows dates
• VQ-07: Grid & Legend (0/2) - Grid not visible (subtle gridlines would help readability). Legend present but small.

Spec Compliance (23/25)

• SC-01: Plot Type (8/8) - Correct RSI indicator chart
• SC-02: Data Mapping (5/5) - Date on X-axis, RSI 0-100 on Y-axis
• SC-03: Required Features (5/5) - Has threshold lines at 30/70, shaded zones, 14-period notation
• SC-04: Data Range (3/3) - Y-axis fixed 0-100 as required
• SC-05: Legend Accuracy (0/2) - Legend shows "RSI (14)" but position could be better integrated
• SC-06: Title Format (2/2) - Correct format: "indicator-rsi · highcharts · pyplots.ai"

Data Quality (18/20)

• DQ-01: Feature Coverage (7/8) - Shows RSI fluctuations including oversold approach, missing clear overbought touch
• DQ-02: Realistic Context (6/7) - Stock-like RSI behavior, ~120 data points over 6 months
• DQ-03: Appropriate Scale (5/5) - RSI values realistic (25-65 range typical)

Code Quality (6/10) - Partial score due to missing implementation

• CQ-01: KISS Structure (1/3) - Cannot fully verify without code
• CQ-02: Reproducibility (2/3) - Cannot verify seed usage
• CQ-03: Clean Imports (1/2) - Cannot verify
• CQ-04: No Deprecated API (1/1) - Plot rendered successfully
• CQ-05: Output Correct (1/1) - plot.png was generated

Library Features (5/5)

• LF-01: Distinctive Features (5/5) - Uses Highcharts Stock features: area series, plot bands for zones, plot lines for thresholds

Strengths

• Excellent visual representation of RSI indicator with proper overbought/oversold zones
• Correct 0-100 scale with threshold lines at 30 and 70
• Professional appearance with shaded zones and clear labeling
• Good use of Highcharts features (plot bands, area series)
• Title format follows specification exactly

Weaknesses

• CRITICAL: Implementation code not committed to branch - must be fixed
• Grid lines missing or too subtle - would improve readability
• Legend placement could be more prominent
• RSI data doesn't show clear overbought condition (above 70) - would better demonstrate feature coverage
• Line width could be slightly thicker for better visibility

Verdict: REJECTED

Reason: The implementation code (highcharts.py) is missing from the branch. The plot image was generated successfully, but the Python source file was not committed. This must be fixed before the PR can be approved.