log_pretty: Pretty ticks for log-transformed axes

In forestploter: Create a Flexible Forest Plot

Pretty ticks for log-transformed axes

Description

Compute "log-pretty" tick values in the original (non-transformed) space using decade-aware sub-multiples. Ranges spanning at least three orders of magnitude collapse to one tick per decade (e.g. 1, 10, 100); narrower ranges include classic engineering sub-multiples (1, 2, 5 or 1, 2, 3, 5, 7); ranges narrower than half a decade fall back to pretty on the original scale because dense log ticks look clustered there.

Usage

log_pretty(range_orig, base = 10)

Arguments

range_orig	Numeric length-2 range in the original (non-log) scale. All values must be strictly positive; otherwise the function falls back to pretty.
base	Logarithm base. Use exp(1) for natural log, 2 for log2, or 10 for log10.

Value

A numeric vector of tick values in the original scale.

forestploter documentation built on Oct. 1, 2026, 1:08 a.m.