Mixture Experiments in R Using mixexp

John Lawson, Cameron Willden

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This article discusses the design and analysis of mixture experiments with R and illustrates the use of the recent package mixexp. This package provides functions for creating mixture designs composed of extreme vertices and edge and face centroids in constrained mixture regions where components are subject to upper, lower and linear constraints. These designs cannot be created by other R packages. mixexp also provides functions for graphical display of models fit to data from mixture experiments that cannot be created with other R packages.

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