R help - Mar 2009 - simple question beginner

 
Hi there,
 
I am beginner in R and I have some basic question. Suppose I run a common
procedure such as a t test or cox model like below:
 
out<-coxph( Surv(tstart,tstop, death1) ~ x1+x1:log(tstop+1) ,
test1,method=c("breslow")) 
 
Which yields the following result:
 
Call:
coxph(formula = Surv(tstart, tstop, death1) ~ x1 + x1:log(tstop + 
    1), data = test1, method = c("breslow"))

                   coef exp(coef) se(coef)     z    p
x1                -9.58  6.89e-05     6.83 -1.40 0.16
x1:log(tstop + 1)  6.90  9.93e+02     5.63  1.23 0.22
Likelihood ratio test=2.97  on 2 df, p=0.226  n= 120 
 
 
Now I simply want to create an array (let "a") with the coefficients.
I.e. I want
 
a<-c(-9.58, 6.90)
 
Generally how can take the elements I want from the output matrix above for
further manipulation?
 
Thanks in advance for any answer!!
 
 


      
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names() is a great function for finding out how to get info from
objects of unknown structure, so try:
names(out)



2009/3/10 ???????? ??????? <bleonidas25 at
yahoo.gr>:
>
> Hi there,
>
> I am beginner in R and I have some basic question. Suppose I run a common
procedure such as a t test or cox model like below:
>
> out<-coxph( Surv(tstart,tstop, death1) ~ x1+x1:log(tstop+1) ,
test1,method=c("breslow"))
>
> Which yields the following result:
>
> Call:
> coxph(formula = Surv(tstart, tstop, death1) ~ x1 + x1:log(tstop +
> ??? 1), data = test1, method = c("breslow"))
>
> ?????????????????? coef exp(coef) se(coef)???? z??? p
> x1??????????????? -9.58? 6.89e-05???? 6.83 -1.40 0.16
> x1:log(tstop + 1)? 6.90? 9.93e+02???? 5.63? 1.23 0.22
> Likelihood ratio test=2.97? on 2 df, p=0.226? n= 120
>
>
> Now I simply want to create an array (let "a") with the
coefficients. I.e. I want
>
> a<-c(-9.58, 6.90)
>
> Generally how can take the elements I want from the output matrix above for
further manipulation?
>
> Thanks in advance for any answer!!
>
>
>
>
>
> ___________________________________________________________
> ?????????????? Yahoo!;
> ?????????? ?? ?????????? ???????? (spam); ?? Yahoo! Mail
> ???????? ??? ???????? ?????? ????????? ???? ??? ???????????
> ????????? http://login.yahoo.com/config/mail?.intl=gr
>
> ? ? ? ?[[alternative HTML version deleted]]
>
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>


-- 
Mike Lawrence
Graduate Student
Department of Psychology
Dalhousie University

Looking to arrange a meeting? Check my public calendar:
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~ Certainty is folly... I think. ~

Hi

r-help-bounces at r-project.org napsal dne 10.03.2009 12:21:38:
>  
> Hi there,
>  
> I am beginner in R and I have some basic question. Suppose I run a 
common 
> procedure such as a t test or cox model like below:
>  
> out<-coxph( Surv(tstart,tstop, death1) ~ x1+x1:log(tstop+1) , 
test1,method=c
> ("breslow")) 
>  
> Which yields the following result:
>  
> Call:
> coxph(formula = Surv(tstart, tstop, death1) ~ x1 + x1:log(tstop + 
>     1), data = test1, method = c("breslow"))
> 
>                    coef exp(coef) se(coef)     z    p
> x1                -9.58  6.89e-05     6.83 -1.40 0.16
> x1:log(tstop + 1)  6.90  9.93e+02     5.63  1.23 0.22
> Likelihood ratio test=2.97  on 2 df, p=0.226  n= 120 
>  
>  
> Now I simply want to create an array (let "a") with the
coefficients.
I.e. I want

Most probably coef will work here

If you had tried help.search
??"coefficients"
you would find several appropriate items.

Besides 

str(object) is also a good starting point for inspection of any object.

Regards
Petr

>  
> a<-c(-9.58, 6.90)
>  
> Generally how can take the elements I want from the output matrix above 
for 
> further manipulation?
>  
> Thanks in advance for any answer!!
>  
>  
> 
> 
> 
> ___________________________________________________________ 
> ?????????????? Yahoo!; 
> ?????????? ?? ?????????? ???????? (spam); ?? Yahoo! Mail 
> ???????? ??? ???????? ?????? ????????? ???? ??? ??????????? 
> ????????? http://login.yahoo.com/config/mail?.intl=gr
> 
>    [[alternative HTML version deleted]]
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide 
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.