On Fri, 2008-06-27 at 21:43 +0200, Dan Bolser wrote:
2008/6/27 Prof Brian Ripley [EMAIL PROTECTED]:
snip /
I forgot to answer that: just ask R to show you stats:::biplot.prcomp
Ah! I never knew the ::: trick!
In this case you also need to know that biplot.prcomp is in stats.
getAnywhere()
Please consider the following PCA example;
my.df -
data.frame(A=(x - rnorm(100,mean=100, sd=10)),
B=(y - x + rnorm(100,mean=10, sd=10)))
plot(my.df)
my.pc -
prcomp(my.df, center=TRUE, scale=TRUE)
biplot(my.pc)
my.x - (my.pc$x)[,1]
my.y - (my.pc$x)[,2]
plot(my.x, my.y,
On Fri, 27 Jun 2008, Dan Bolser wrote:
Please consider the following PCA example;
my.df -
data.frame(A=(x - rnorm(100,mean=100, sd=10)),
B=(y - x + rnorm(100,mean=10, sd=10)))
plot(my.df)
my.pc -
prcomp(my.df, center=TRUE, scale=TRUE)
biplot(my.pc)
my.x - (my.pc$x)[,1]
my.y -
On Fri, 27 Jun 2008, Prof Brian Ripley wrote:
On Fri, 27 Jun 2008, Dan Bolser wrote:
Please consider the following PCA example;
my.df -
data.frame(A=(x - rnorm(100,mean=100, sd=10)),
B=(y - x + rnorm(100,mean=10, sd=10)))
plot(my.df)
my.pc -
prcomp(my.df, center=TRUE,
2008/6/27 Prof Brian Ripley [EMAIL PROTECTED]:
On Fri, 27 Jun 2008, Prof Brian Ripley wrote:
On Fri, 27 Jun 2008, Dan Bolser wrote:
Please consider the following PCA example;
my.df -
data.frame(A=(x - rnorm(100,mean=100, sd=10)),
B=(y - x + rnorm(100,mean=10, sd=10)))
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