5.5.9.10. DOE contour plot

ContourPlot: Make a contour plot of a function—Wolfram Documentation

ContourPlot: Make a contour plot of a function—Wolfram Documentation

5. Process Improvement

ContourPlot: Make a contour plot of a function—Wolfram Documentation

Crosshairs and flags - Minitab

DOE Center Points: What They Are & Why They're Useful

SAS Help Center: Example: Create a Contour Plot

5.5.9.10. DOE contour plot

ContourPlot: Make a contour plot of a function—Wolfram Documentation

ContourPlot: Make a contour plot of a function—Wolfram Documentation

Example of Contour Plot with a mixture design - Minitab