[R] About regression and plot

2006-04-26 Thread Daniel Yang
Dear R-help, This is my first R day. I want to ask some more beginner's questions. Q1. How can I obtain the covariance matrix for parameter estimates of a multiple regression? I checked ?lm but didn't get the information. Q2. How can I see the old graphs in the graph window? Q3. Can R plot

[R] About regression and plot

2006-04-26 Thread Daniel Yang
--- I changed to format to text instead of html --- Dear R-help, This is my first R day. I want to ask some more beginner's questions. Q1. How can I obtain the covariance matrix for parameter estimates of a multiple regression? I checked ?lm but didn't get the information. Q2. How can I see

Re: [R] About regression and plot

2006-04-26 Thread Romain Francois
Le 26.04.2006 15:16, Daniel Yang a écrit : Dear R-help, This is my first R day. I want to ask some more beginner's questions. Q1. How can I obtain the covariance matrix for parameter estimates of a multiple regression? I checked ?lm but didn't get the information. Q2. How can I see the

Re: [R] About regression and plot

2006-04-26 Thread Gabor Grothendieck
On 4/26/06, Daniel Yang [EMAIL PROTECTED] wrote: --- I changed to format to text instead of html --- Dear R-help, This is my first R day. I want to ask some more beginner's questions. Read the posting guide at the bottom of each post to r-help. Q1. How can I obtain the covariance matrix