[R] Least Squares Fit

About this list Date view Thread view Subject view Author view Attachment view

From: Fred J. (phddas@yahoo.com)
Date: Sun 02 May 2004 - 20:26:41 EST


Message-id: <20040502102641.87598.qmail@web20503.mail.yahoo.com>

Hello

I need to plot the least squares fit and get the slope
of the line that best fit the data. after reading lm
and lsfit, since not being able to understand the use
of the second argument "y" for the lsfit, I am giving
the lm a go, but know not why the code below does not
draw the line on the plot. e.g. well.. why -50
Intercept?
thanks

x <- 1:10; y <- x+50
plot(x,y)
z <- lm(as.data.frame(cbind(x,y))))
abline(z)

> z$coefficients
(Intercept) y
        -50 1

______________________________________________
R-help@stat.math.ethz.ch mailing list
https://www.stat.math.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html


About this list Date view Thread view Subject view Author view Attachment view

This archive was generated by hypermail 2.1.3 : Mon 31 May 2004 - 23:05:07 EST