📅 2023-11-13 — Session: Enhanced Graphviz Visualization for Course Prerequisites
🕒 17:55–19:00
🏷️ Labels: Graphviz, Visualization, Course Prerequisites, Python, Graph Layout
📂 Project: Dev
⭐ Priority: MEDIUM
Session Goal: The session aimed to enhance the visualization of course prerequisites using Graphviz, focusing on improving layout, styling, and output formats.
Key Activities:
- Identified and planned to fix errors in graph generation.
- Reviewed guidelines for creating course prerequisite graphs with Graphviz, covering installation, data preparation, and visualization.
- Modified Graphviz code to create a subgraph for CBC courses, addressing rendering limitations.
- Adjusted graphs to treat CBC subgraph as a single node linked to ‘E. Media’.
- Fixed CBC subgraph representation with invisible edges.
- Improved graph layout using invisible anchors and node repositioning.
- Discussed image analysis capabilities and extracted text from images related to educational content.
- Arranged graphs to fit an A4 layout using invisible edges and ranking constraints.
- Explored node placement workarounds and controlled node positioning using invisible nodes and edges.
- Modified subgraph appearance by changing background colors and borders.
- Utilized layers for complex visualizations, addressing limitations in non-PostScript formats.
- Reviewed output format options for Graphviz, including PNG, SVG, and PostScript.
Achievements:
- Developed a comprehensive approach to enhance Graphviz visualizations for course prerequisites.
- Implemented code adjustments to improve graph layout and styling.
- Explored alternative methods for layering and output formats.
Pending Tasks:
- Further explore and implement alternative methods for achieving desired graph layouts, particularly in non-PostScript formats.
- Continue testing and refining the visualization techniques for broader application.