ASCII Heatmap

This example demonstrates terminal-based heatmap visualization using ASCII characters.

Files

• ascii_heatmap_demo.f90 - Source code
• Output shown directly in terminal

Running

make example ARGS="ascii_heatmap_demo"

Features Demonstrated

• Terminal visualization: No GUI required
• Density mapping: Characters represent values
• Automatic scaling: Data range mapped to characters
• Compact display: Efficient space usage

ASCII Character Mapping

Values mapped to density characters: - (space) - Lowest values - . - Low values - : - Medium-low values - - - Medium values - = - Medium-high values - + - High values - * - Higher values - # - Highest values

Use Cases

• Remote sessions: When GUI not available
• Quick visualization: Fast data inspection
• Log files: Can be saved as text
• CI/CD pipelines: Terminal-based testing

Example Output

ASCII Heatmap Demo
==================

    #***+++===---:::...
    **+++===---:::...
    *+++===---:::...
    +++===---:::...
    ++===---:::...
    +===---:::...
    ===---:::...
    ==---:::...
    =---:::...
    ---:::...