What triggers it. A radar chart sets min above zero.

How to fix it. Use min 0 for proportional radii, or retain the deliberate truncation and disclose the scale.

Minimal reproducer

This source triggers SCALE_RANGE_EXCLUDES_ZERO — checked at build time against the same engine the editor runs.

radar-beta
  axis a, b, c
  curve x{95, 96, 99}
  min 90
  max 100

Open this reproducer in the editor

Run am verify diagram.mmd --json, inspect this code, and apply the smallest source or typed mutation that clears it. If it persists after two mechanical attempts, return the warning and ask for human review.

In the cloned repo, am is bun run bin/am.ts.

Machine-readable: this page as Markdown.

Back to all warning codes, or open a blank editor to try a fix.