plot.ppr | R Documentation |
Plot the ridge functions for a projection pursuit regression
(ppr
) fit.
## S3 method for class 'ppr' plot(x, ask, type = "o", cex = 1/2, main = quote(bquote( "term"[.(i)]*":" ~~ hat(beta[.(i)]) == .(bet.i))), xlab = quote(bquote(bold(alpha)[.(i)]^T * bold(x))), ylab = "", ...)
x |
an R object of class |
ask |
the graphics parameter |
type |
the type of line (see |
cex |
plot symbol expansion factor (relative to
|
main, xlab, ylab |
axis annotations, see also
|
... |
further graphical parameters, passed to
|
None
A series of plots are drawn on the current graphical device, one for each term in the fit.
ppr
, par
require(graphics) rock1 <- within(rock, { area1 <- area/10000; peri1 <- peri/10000 }) par(mfrow = c(3,2)) # maybe: , pty = "s" rock.ppr <- ppr(log(perm) ~ area1 + peri1 + shape, data = rock1, nterms = 2, max.terms = 5) plot(rock.ppr, main = "ppr(log(perm)~ ., nterms=2, max.terms=5)") plot(update(rock.ppr, bass = 5), main = "update(..., bass = 5)") plot(update(rock.ppr, sm.method = "gcv", gcvpen = 2), main = "update(..., sm.method=\"gcv\", gcvpen=2)")
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