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Contour plot crest line

2 messages · Michael Kubovy, Spencer Graves

#
Any suggestions about drawing the ridge line on a response surface  
represented as a contour plot?

_____________________________
Professor Michael Kubovy
University of Virginia
Department of Psychology
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2 days later
#
Have you studied the examples on the help pages for "contour" and 
"persp"?  Also, if my memory is correct, there is some useful 
information this on Venables and Ripley, Modern Applied Statistics with 
S, 4th ed. (Springer).

	  spencer graves
Michael Kubovy wrote: