Fig. 3From: Zero problems with compositional data of physical behaviors: a comparison of three zero replacement methodsBiplots of complete and replaced datasets (20% zeros, observation threshold-based replacement). Zeros replaced using simple, multiplicative and lrEM replacement. The simple and multiplicative replacement methods were set up to replace zeros with 65% the observation threshold, whereas the lrEM by construction replaces zeros with estimated values below the observation threshold. Individuals with imposed and replaced zeros are indicated with a different colorBack to article page