feat(highcharts): implement network-weighted

[github-actions]

Implementation: network-weighted - highcharts

Implements the highcharts version of network-weighted.

File: plots/network-weighted/implementations/highcharts.py

Parent Issue: #3290

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🤖 impl-generate workflow

[claude]

AI Review - Attempt 1/3

Image Description

The plot displays a weighted network graph representing university department collaborations. There are 12 circular nodes of varying sizes (CS, MATH, PHYS, STAT, EE, ME, BIO, CHEM, ECON, PSYCH, MED, ENV) connected by edges of varying thickness. Node sizes reflect weighted degree (total collaboration strength), with CS and BIO being among the largest. Edge colors are a consistent dark blue (#306998), with thickness clearly varying to show collaboration intensity (thickest edges include BIO-MED and CS-EE). Each node has a distinct color from a colorblind-safe palette (blue, yellow, purple, cyan, brown, pink, gray, olive, orange, green, red). Labels appear both inside larger nodes and outside smaller ones with white text outlines for legibility. The title "network-weighted · highcharts · pyplots.ai" appears at the top with a descriptive subtitle. The network is positioned center-right on the canvas with notable whitespace on the left.

Quality Score: 82/100

Criteria Checklist

Visual Quality (32/40)

• VQ-01: Text Legibility (8/10) - Title and labels readable, but some node labels (PHYS, STAT) placed outside nodes are smaller relative to canvas size
• VQ-02: No Overlap (7/8) - Minor label positioning issues but generally readable
• VQ-03: Element Visibility (7/8) - Nodes well-sized, edge thickness differentiation visible but could be more pronounced
• VQ-04: Color Accessibility (5/5) - Excellent colorblind-safe palette
• VQ-05: Layout Balance (3/5) - Network occupies ~35% of canvas, offset to right with empty space on left
• VQ-06: Axis Labels (N/A - network graph) (2/2) - Subtitle explains edge meaning appropriately
• VQ-07: Grid & Legend (0/2) - No legend for edge weight scale (spec suggests considering one)

Spec Compliance (22/25)

• SC-01: Plot Type (8/8) - Correct weighted network graph
• SC-02: Data Mapping (5/5) - Nodes represent departments, edges represent collaborations with weight
• SC-03: Required Features (4/5) - Missing legend/annotation explaining weight scale (spec notes suggest this)
• SC-04: Data Range (3/3) - All nodes and edges visible
• SC-05: Legend Accuracy (0/2) - No legend present for weight interpretation
• SC-06: Title Format (2/2) - Correct format: network-weighted · highcharts · pyplots.ai

Data Quality (18/20)

• DQ-01: Feature Coverage (7/8) - Shows varying edge weights, node sizing by degree, but lacks extreme weight contrast examples
• DQ-02: Realistic Context (7/7) - University department collaboration is a realistic, neutral scenario
• DQ-03: Appropriate Scale (4/5) - Publication counts (15-55) are reasonable for academic collaboration

Code Quality (8/10)

• CQ-01: KISS Structure (3/3) - Linear flow: imports → data → processing → HTML → screenshot
• CQ-02: Reproducibility (3/3) - np.random.seed(42) set
• CQ-03: Clean Imports (2/2) - All imports used
• CQ-04: No Deprecated API (0/1) - Using inline JavaScript manipulation rather than highcharts-core Python API
• CQ-05: Output Correct (0/1) - Saves as plot.png correctly

Library Features (2/5)

• LF-01: Distinctive Features (2/5) - Uses networkgraph module but bypasses highcharts-core Python API in favor of raw JavaScript; could better leverage the Python bindings

Strengths

• Excellent colorblind-safe palette with 12 distinct node colors
• Node sizing by weighted degree effectively shows collaboration hubs
• Good use of Highcharts networkgraph module with force-directed layout
• Clean subtitle explains the weight encoding
• Proper white text outlines ensure label legibility

Weaknesses

• No legend explaining the edge weight scale (spec recommends "a legend or annotation explaining the weight scale")
• Network graph is offset to the right with ~60% empty whitespace on the left side of canvas
• Uses raw JavaScript/HTML generation instead of highcharts-core Python API

Verdict: REJECTED

[github-actions]

🔧 Repair Attempt 1/3

Applied fixes based on AI review feedback.

Status: Repair completed, re-triggering review...

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🤖 impl-repair

[claude]

AI Review - Attempt 2/3

Image Description

The plot displays a weighted network graph showing university department collaboration patterns. There are 12 department nodes rendered as colored circles: CS (blue), MATH (blue), PHYS (purple), STAT (cyan), EE (brown), ME (pink), BIO (gray), CHEM (olive-yellow), ECON (blue), PSYCH (orange), MED (green), and ENV (red). Node sizes vary based on weighted degree - BIO and CS appear as the largest nodes indicating highest collaboration activity. Edges connect departments with varying thickness representing the number of joint publications (ranging from 15 to 55). The thickest edges connect BIO-MED (55 publications) and CS-EE (52 publications). A legend in the bottom-left corner explains the edge weight scale with three line thickness examples. The title 'network-weighted · highcharts · pyplots.ai' appears at the top with a subtitle 'University Department Collaboration Network'. The network uses a force-directed layout centered in the canvas.

Quality Score: 90/100

Criteria Checklist

Visual Quality (36/40)

• VQ-01: Text Legibility (8/10) - Labels readable but could be larger for 4800x2700 canvas
• VQ-02: No Overlap (8/8) - No overlapping text or elements
• VQ-03: Element Visibility (8/8) - Nodes well-sized, edges clearly distinguishable by thickness
• VQ-04: Color Accessibility (5/5) - Colorblind-safe palette with good variety
• VQ-05: Layout Balance (3/5) - Network centered but could use more canvas space; legend far from main visualization
• VQ-06: Axis Labels (2/2) - N/A for network graphs, subtitle provides context
• VQ-07: Grid & Legend (2/2) - Legend well-designed with clear thickness examples

Spec Compliance (25/25)

• SC-01: Plot Type (8/8) - Correct weighted network graph
• SC-02: Data Mapping (5/5) - Edge thickness correctly maps to weights
• SC-03: Required Features (5/5) - Weighted edges, node sizing by degree, legend present
• SC-04: Data Range (3/3) - All nodes and edges visible
• SC-05: Legend Accuracy (2/2) - Edge weight legend accurate with min/mid/max values
• SC-06: Title Format (2/2) - Correct format: network-weighted · highcharts · pyplots.ai

Data Quality (17/20)

• DQ-01: Feature Coverage (7/8) - Shows varied edge weights and node degrees; could show more weight variation
• DQ-02: Realistic Context (7/7) - University collaboration is neutral and realistic
• DQ-03: Appropriate Scale (3/5) - Publication counts realistic but some weights very similar

Code Quality (9/10)

• CQ-01: KISS Structure (3/3) - Linear structure: imports → data → plot → save
• CQ-02: Reproducibility (3/3) - Uses np.random.seed(42)
• CQ-03: Clean Imports (2/2) - All imports used
• CQ-04: No Deprecated API (1/1) - Current Highcharts API
• CQ-05: Output Correct (0/1) - Saves as plot.png but also plot.html (minor)

Library Features (3/5)

• LF-01: Uses distinctive library features (3/5) - Uses networkgraph module, force-directed layout, custom link widths via post-render update

Strengths

• Excellent implementation of weighted network graph using Highcharts networkgraph module
• Node sizing by weighted degree adds meaningful visual information
• Custom legend clearly explains the edge weight scale
• Force-directed layout with verlet integration provides good node positioning
• Colorblind-safe palette with distinct colors for each department
• Clean data structure with realistic university collaboration scenario

Weaknesses

• Legend positioned in bottom-left is far from the main visualization
• Network could utilize more of the canvas space for better visibility
• Post-render timeout approach for link widths is a workaround rather than native solution

Verdict: APPROVED