feat(highcharts): implement slider-control-basic

[github-actions]

Implementation: slider-control-basic - highcharts

Implements the highcharts version of slider-control-basic.

File: plots/slider-control-basic/implementations/highcharts.py

Parent Issue: #3071

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🤖 impl-generate workflow

[claude]

AI Review - Attempt 1/3

Image Description

The plot displays a line chart showing monthly sales data (January through December) for the year 2023. The chart uses a brownish-red line color (#8C564B) with circular markers at each data point. The Y-axis shows "Sales (thousands USD)" ranging from 0 to 310, with clean gridlines. The X-axis shows month labels. A slider control widget is visible at the bottom with a gradient track (blue to yellow) allowing selection between years 2019-2023, with "2023" prominently displayed below. The title follows the correct format "slider-control-basic · highcharts · pyplots.ai" with a subtitle explaining the interaction.

Quality Score: 91/100

Criteria Checklist

Visual Quality (36/40 pts)

• VQ-01: Text Legibility (10/10) - All text is clearly readable: title is large and bold, axis labels are appropriately sized, tick marks are legible
• VQ-02: No Overlap (8/8) - No overlapping text elements, clean layout throughout
• VQ-03: Element Visibility (8/8) - Line width and marker sizes are appropriate for the data density (12 points)
• VQ-04: Color Accessibility (5/5) - Uses colorblind-safe palette; the brownish color is distinguishable
• VQ-05: Layout Balance (3/5) - Good proportions but slider widget slightly compressed at bottom; minor canvas utilization issue
• VQ-06: Axis Labels (2/2) - Y-axis has units "Sales (thousands USD)", X-axis has "Month"
• VQ-07: Grid & Legend (0/2) - Grid is well styled but legend is disabled; should show which year is currently displayed in legend area

Spec Compliance (24/25 pts)

• SC-01: Plot Type (8/8) - Correct line chart type for time series data
• SC-02: Data Mapping (5/5) - Months on X, Sales on Y correctly assigned
• SC-03: Required Features (4/5) - Has slider with min/max labels and current value display; missing play/pause animation (noted as optional in spec)
• SC-04: Data Range (3/3) - Y-axis shows full range starting from 0
• SC-05: Legend Accuracy (2/2) - N/A (using slider instead of legend)
• SC-06: Title Format (2/2) - Uses correct format "slider-control-basic · highcharts · pyplots.ai"

Data Quality (19/20 pts)

• DQ-01: Feature Coverage (7/8) - Shows monthly sales pattern with seasonal variation; demonstrates year filtering well but only one year visible at a time
• DQ-02: Realistic Context (7/7) - Monthly sales data is a realistic business scenario
• DQ-03: Appropriate Scale (5/5) - Sales values (120K-290K range) are realistic for business data

Code Quality (9/10 pts)

• CQ-01: KISS Structure (3/3) - Linear script structure: imports → data → config → HTML → screenshot
• CQ-02: Reproducibility (3/3) - Uses np.random.seed(42)
• CQ-03: Clean Imports (2/2) - All imports are used
• CQ-04: No Deprecated API (1/1) - Uses current APIs
• CQ-05: Output Correct (0/1) - Saves as plot.png (correct) but also creates plot.html

Library Features (3/5 pts)

• LF-01: Distinctive Features (3/5) - Uses Highcharts series show/hide functionality with custom HTML slider; could leverage built-in Highcharts range selector or input controls for tighter integration

Strengths

• Excellent slider widget design with clear labels, gradient styling, and prominent current value display
• Clean title format following spec requirements exactly
• Good data generation with realistic yearly growth trends and seasonal patterns
• Proper use of colorblind-safe color palette
• Responsive slider interaction that shows/hides series appropriately
• Professional-looking chart with appropriate text sizes for the canvas size

Weaknesses

• Legend is disabled; would be clearer to show a small legend indicating the currently selected year
• Grid could be slightly more subtle (alpha is 0.12 which is good, but visual weight is noticeable)
• The line color shown (brownish-red) differs from the blue (#306998) assigned to 2023 - appears series colors are not rendering as expected

Verdict: APPROVED