[R] Response surface plot

Tim Carnus Tim.Carnus at ucd.ie
Tue May 12 14:43:23 CEST 2009

   Dear List,
   I am trying to plot a similar graph to attached from minitab manual in R.
   I have a response Y and three components which systematically vary in their
   proportions. I have found in R methods/packages to plot ternary plots (eg.
   plotrix) but nothing which can extend it to response surface in 3-D.
   Any help appreciated,
   Tim Carnus
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