search for: vrecko

...British Columbia, Canada. I can't for the life of me figure out how to plot a 3D surface (A 3D response surface to be more specific) in R. I found your email address on a web board, and saw someone mention wireframe(), but using the help in R yielded no results. Any suggestions? Thanks. Dean Vrecko

...2 vectors. One has the values I want to take the means from, the other is the four strata I am interested in. So I essentially want to break up the information vector into the four strata and calculate four means, one for each stratum. How can I do this in a reasonable way? Thanks very much. Dean Vrecko PS: Incidentally I forget how to see the code of functions. Does anyone remember the command to do this?

...way to add a line in a plot of a points that should lie along a particular line. Can I add a line to the 'plot()' function, maybe using 'abline()' so that the line is visible in the graph of 'plot()'? How? More generally, can I overlay plots over one another? Thanks. Dean Vrecko Simon Fraser University

...an unequal number of observations for the 48 runs. How can I do this? Seems like a straightforward enough situation. I am trying to avaoid writing my own C code to do the analysis since I am working under some pretty tight time constraints. ANy help would be appreciated. Thanks very much. Dean Vrecko

..."as if it was on a *_new_* device". Alternatively the 'lattice' package can produce a wide range of plots. Then try the various contributed documents that exist on the CRAN mirrors to further your knowledge. It's all there. Tom Mulholland -----Original Message----- From: dvrecko at sfu.ca [mailto:dvrecko at sfu.ca] Sent: Monday, 29 November 2004 9:35 AM To: r-help at stat.math.ethz.ch Subject: [R]: Adding a line in the graph of 'plot()' Hello. I'm looking for a way to add a line in a plot of a points that should lie along a particular line. Can I add a line...