[R] Plotting multiple curves on a plot

Greetings! I was wondering how to plot multiple equation on the same plot with the data? So if I have three equations: 1.y= 2.31X + -2.2 2.y= 2.27X^2 + 5.63X + 0.52 3.y= -1.53X^3 + 1.92X^2 + -4.72X + 4.57 and a datafram or a 2D matrix. I would also like the equations in different colors,

[R] Polynomial regression help

I have a simple X, Y data frame that I am trying to run regression analysis on. The linear regression looks great, but when I use lm(formula = y ~ poly(x, degree = 5)) I get the same coeffecients. So for example if I use degree =3 my formula would look like y = 4.2 x^3 + 3.2x^2 + 2.1x + 1.0 and

[R] Add a Vector to a Matrix

I know there is a very simple answer to this question, but it eludes me. I need to insert a vector into a matrix. So if I have a 2 column matrix with 5 rows, I need to insert in an additional vector so there is now 6 rows without overwriting any of the data in the matrix already. thanks, Ben. -

Re: [R] Accessing individual variables from summary of lm

Thanks for your help! If you wouldn't mind, how do I access the individual components inside coefficients matrix? thanks, Ben. Paul Smith wrote: > > On Tue, Jul 22, 2008 at 5:44 AM, ascentnet <[EMAIL PROTECTED]> wrote: >> I am trying to access the R2, intercept, and s

[R] Accessing individual variables from summary of lm

I am trying to access the R2, intercept, and slope out of the summary from an lm so that I can insert it into a database using RODBC. How can I access these individually? thanks in advance, Ben. -- View this message in context: http://www.nabble.com/Accessing-individual-variables-from-summary-