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Log transformation

Source: R/scale_trans.R
log_trans.Rd

Applies a log transform on the input: y = log(abs(x), b), where:

  • x is the input vector

  • b is the log base

Usage

log_trans(base = exp(1))

Arguments

base

<number> The log base

Details

If x is negative, the result is multiplied by -1.

This transform requires that the input range doesn't cross zero. Transforming an input that crosses 0 will succeed and give predictable output, but its inverse will not, due to unsigned 0 (i.e. -1 * log(1) == log(1)).

See also

Other transform: power_trans(), symlog_trans()