Transformations appropriate for ecological data.
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vector or array of values to transform
further arguments passed to other methods
asin_sqrt = Arc-sine square root transform:
Appropriate for vegetation cover and other proportion data. Forces data to 0-1 scale if any original values were outside this range. Follows pg. 69 of McCune & Grace (2002).
genlogtrans = Generalized log-transform:
Log transform that properly handles zeros and very small values. Preserves original order of magnitudes while accounting for values = 0 and << 1. Follows pg. 69 of McCune & Grace (2002).
standardize = Range standardize:
Standardizes data to 0-1 scale based on min/max values.
Values on the modified scale.
McCune, B., and J. B. Grace. 2002. Analysis of Ecological Communities. MjM Software, Gleneden Beach, Oregon, USA. 304 pp.
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