[R] Odp: How to get out the t-test value matrix for a linear regression ?

[Petr PIKAL]

Hi

r-help-bounces at r-project.org napsal dne 28.01.2008 17:16:37:

> Hi, all
> 
>      I've written some R script to calculate the linear regression of a 
matrix.
> Here below is my script:
> 
> >x<-matrix(scan("h:/data/xxx.dat",0),nrow=46,ncol=561,byrow=TRUE)
> 
> >year <- NULL
> >year <- cbind(year,as.matrix(x[,1]))
> 
> >lm.sol<-lm(x~year)
> >xtrend<-coef(lm.sol)[2,]    # get the matrix of regression coefficient 
> 
> >t.test<- ?                       # also want to get a similar matrix of 
t-
> test value for the regression coefficient
> 
> >class(summary(lm.sol)) 
> > "listof" 
> >class(summary(lm.sol))
> >"listof"                            # the t-test values are in the obj 
> "summary(lm.sol)", but how to get them out 
>                                          as a matrix similar as the 
above"xtrend"?
> 

str is your friend. Try,

str(summary(lm.sol))

and you will find a structure of summary object. 

>From it it is quite easy to find that
summary(lm.sol)$coef

gives you a table with t.test values.

Regards
Petr


> Anyone can help me? Thanks !
> 
> 
> 
> 
> 
> Regards
> 
> 
> Leo
> 
> 
> 2008-01-28 
> 
> 
> 
> leo_aries 
> 
>    [[alternative HTML version deleted]]
> 
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