bar-chart-comparison

name	bar-chart-comparison
description	Present comparisons as narrow ASCII bar charts in the terminal. Use when user asks to compare items, metrics, counts, or coverage between things.

Bar Chart Comparison Skill

When the user asks for a comparison between items (metrics, counts, coverage, etc.), present the data as a narrow ASCII bar chart that fits in a terminal.

Format

Title (units)
=============

Item A |######## 800
Item B |## 200
Item C |################### 1,900

Legend: # = N units (scale to fit)

Rules

1. Keep it narrow - Max 40 characters wide for the chart area
2. Scale appropriately - Use # to represent units, pick a scale that makes differences visible
3. Right-align numbers - Put actual values after bars
4. Add legend - Show what each # represents
5. Group related items - Use blank lines or headers to organize
6. Use - for zero/none - Don't leave blank, show explicit zero

When to Use

• User asks to "compare" things
• User asks for "how does X stack up against Y"
• User wants to see relative sizes/counts
• Summarizing coverage gaps
• Before/after comparisons

Anti-patterns

• Don't use emojis or unicode blocks
• Don't make charts wider than 50 chars total
• Don't omit the scale/legend
• Don't use for single items (just state the number)