Bar Chart Demo

Source: bar_chart_demo.f90

Demonstrates grouped vertical and horizontal bar charts using both the stateful (pyplot-style) and object-oriented (figure_t) fortplot APIs.

• bar_chart_demo.f90 - Source demonstrating grouped and horizontal bars

• Generated outputs in output/example/fortran/bar_chart_demo/

• Grouped bars: Compare multiple series per category

• Horizontal bars: Present ranked metrics across categories
• OO workflow: Call bar_impl with an explicit figure_t instance to avoid globals
• Multiple formats: Save PNG, PDF, and ASCII outputs for each scenario

Running the demo generates: - stateful_grouped.(png|pdf|txt) - Vertical grouped comparison - stateful_horizontal.(png|pdf|txt) - Horizontal completion chart - oo_grouped.(png|pdf|txt) - Object API grouped budget comparison

Perfect for showcasing categorical comparisons and verifying bar chart support in fortplot.

Files

• bar_chart_demo.f90 - Source code
• Generated media in output/example/fortran/bar_chart_demo/

Running

make example ARGS="bar_chart_demo"

Output

Oo Grouped

ASCII output:

(Content embedded here)

Download ASCII

Download PDF

Stateful Grouped

ASCII output:

(Content embedded here)

Download ASCII

Download PDF

Stateful Horizontal

ASCII output:

(Content embedded here)

Download ASCII

Download PDF