The simplex lattice design is a space filling design that creates a triangular grid of runs. The design is the set of blends where the factors’ values are i / m, where i varies from 0 to m and the sum of the factors is 1. For a three-level design, a factor can be set at 0, 0.33, 0.66, or 1.
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Select DOE > Classical > Mixture Design.
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Click Continue.
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4.
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Click Simplex Lattice to generate the design.
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Figure 12.10 Three Factor Five-Level Simplex Lattice Design
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Click Make Table.
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From the design table, select Graph >Ternary Plot.
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Figure 12.11 Ternary Plot for Simplex Lattice Design