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John Sorkin

2007-Oct-01 02:51 UTC

[R] data structure with coefficients, and call from lm()

Widows XP
R 2.3.1

I have been trying to make a data structure that will contain both the
coefficients from a linear regression along with column and row titles AND the
call, i.e.
myreg<-lm(y~x+y+z)
whatIwant<-cbind(c(summary(myreg)$call,"",""),summary(myreg)$coefficients)

Neither the statement above, nor any one of twenty variations I have tried work.
I would appreciate any advice.
Thanks,
John




John Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology
Baltimore VA Medical Center
10 North Greene Street
GRECC (BT/18/GR)
Baltimore, MD 21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing)

Confidentiality Statement:
This email message, including any attachments, is for the so...{{dropped}}

jim holtman

2007-Oct-01 03:00 UTC

head link

[R] data structure with coefficients, and call from lm()

try using a 'list':

whatIwant<-list(call=summary(myreg)$call, coef=summary(myreg)$coefficients)

On 9/30/07, John Sorkin <jsorkin at grecc.umaryland.edu>
wrote:> Widows XP
> R 2.3.1
>
> I have been trying to make a data structure that will contain both the
coefficients from a linear regression along with column and row titles AND the
call, i.e.
> myreg<-lm(y~x+y+z)
>
whatIwant<-cbind(c(summary(myreg)$call,"",""),summary(myreg)$coefficients)
>
> Neither the statement above, nor any one of twenty variations I have tried
work. I would appreciate any advice.
> Thanks,
> John
>
>
>
>
> John Sorkin M.D., Ph.D.
> Chief, Biostatistics and Informatics
> University of Maryland School of Medicine Division of Gerontology
> Baltimore VA Medical Center
> 10 North Greene Street
> GRECC (BT/18/GR)
> Baltimore, MD 21201-1524
> (Phone) 410-605-7119
> (Fax) 410-605-7913 (Please call phone number above prior to faxing)
>
> Confidentiality Statement:
> This email message, including any attachments, is for the so...{{dropped}}
>
> ______________________________________________
> 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.
>

-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?

John Sorkin

2007-Oct-01 03:17 UTC

head link

[R] data structure with coefficients, and call from lm()

Jim,
Again thank you for your quick reply. Your suggestion does not give me exactly
what I want:
>
whatIwant<-list(,summary(fitdelete)$call,summary(fitdelete)$coefficients)
> whatIwant[[1]]
lm(formula = y ~ x)

[[2]]
            Estimate Std. Error   t value     Pr(>|t|)
(Intercept) 4.927791 2.62115494  1.880007 6.307727e-02
x           1.887634 0.04372724 43.168382 1.410167e-65

What I want is something that looks more like a table:

            lm(formula = y ~ x) Estimate Std. Error   t value     Pr(>|t|)
(Intercept)                     4.927791 2.62115494  1.880007 6.307727e-02
x                               1.887634 0.04372724 43.168382 1.410167e-65

Thanks,
John



John Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology
Baltimore VA Medical Center
10 North Greene Street
GRECC (BT/18/GR)
Baltimore, MD 21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing)
>>> "jim holtman" <jholtman at gmail.com> 9/30/2007
11:00 PM >>>try using a 'list':

whatIwant<-list(call=summary(myreg)$call, coef=summary(myreg)$coefficients)

On 9/30/07, John Sorkin <jsorkin at grecc.umaryland.edu>
wrote:> Widows XP
> R 2.3.1
>
> I have been trying to make a data structure that will contain both the
coefficients from a linear regression along with column and row titles AND the
call, i.e.
> myreg<-lm(y~x+y+z)
>
whatIwant<-cbind(c(summary(myreg)$call,"",""),summary(myreg)$coefficients)
>
> Neither the statement above, nor any one of twenty variations I have tried
work. I would appreciate any advice.
> Thanks,
> John
>
>
>
>
> John Sorkin M.D., Ph.D.
> Chief, Biostatistics and Informatics
> University of Maryland School of Medicine Division of Gerontology
> Baltimore VA Medical Center
> 10 North Greene Street
> GRECC (BT/18/GR)
> Baltimore, MD 21201-1524
> (Phone) 410-605-7119
> (Fax) 410-605-7913 (Please call phone number above prior to faxing)
>
> Confidentiality Statement:
> This email message, including any attachments, is for the ...{{dropped}}

John Sorkin

2007-Oct-01 03:19 UTC

head link

[R] data structure with coefficients, and call from lm()

Thank you Moshe,
I understand you point, but I would hope that I could use summary to save my
self some work. I need to do what I described in my original Email to the list
server on tens of regressions.
John

John

John Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology
Baltimore VA Medical Center
10 North Greene Street
GRECC (BT/18/GR)
Baltimore, MD 21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing)
>>> Moshe Olshansky <m_olshansky at yahoo.com> 9/30/2007 11:04 PM
>>>Hello,

First of all, do not use "summary" - it is a function
which acts on myreg and does whatever it does, i.e.
prints a summary.
Examine the myreg object (myreg, names(myreg), etc.).
The you may examine the contents of individual data
members of myreg.
You can also try to print summary(myreg) to a file
(using sink - see ?sink) and then read this file and
extract whatever you need from it.

Regards,

Moshe.

--- John Sorkin <jsorkin at grecc.umaryland.edu> wrote:
> Widows XP
> R 2.3.1
> 
> I have been trying to make a data structure that
> will contain both the coefficients from a linear
> regression along with column and row titles AND the
> call, i.e.
> myreg<-lm(y~x+y+z)
>
whatIwant<-cbind(c(summary(myreg)$call,"",""),summary(myreg)$coefficients)> 
> Neither the statement above, nor any one of twenty
> variations I have tried work. I would appreciate any
> advice.
> Thanks,
> John
> 
> 
> 
> 
> John Sorkin M.D., Ph.D.
> Chief, Biostatistics and Informatics
> University of Maryland School of Medicine Division
> of Gerontology
> Baltimore VA Medical Center
> 10 North Greene Street
> GRECC (BT/18/GR)
> Baltimore, MD 21201-1524
> (Phone) 410-605-7119
> (Fax) 410-605-7913 (Please call phone number above
> prior to faxing)
> 
> Confidentiality Statement:
> This email message, including any attachments, is\ > for t...{{dropped}}

John Sorkin

2007-Oct-01 03:47 UTC

head link

[R] data structure with coefficients, and call from lm()

Jim,
You are indeed trying to help, again my thanks.
What I want to do is make a single structure - a table is an apt description
that will summarize all the regressions, something like:

                                 Estimate Std. Error   t value     Pr(>|t|)
 (Intercept) lm(formula = y ~ x) 4.927791 2.62115494  1.880007 6.307727e-02
 x                               1.887634 0.04372724 43.168382 1.410167e-65
 (Intercept) lm(formula = z ~ x) 6.927791 2.62115494  1.880007 6.307727e-02
 x                               1.887634 0.04372724 43.168382 1.410167e-65
 (Intercept) lm(formula = z~x+z) 6.927791 2.62115494  1.880007 6.307727e-02
 x                               1.887634 0.04372724 43.168382 1.410167e-65
 z                               1.887634 0.04372724 43.168382 1.410167e-65

If you use a non-proportional spaced font (e.g. Courier on a windows system)
the material above is a single "table" that contains all the data from
my numerous regressions, including the call and the coefficients.(If I can get
this to work I will add the R squared values) n.b. In the example above I have 
copied the estimates and changed the label of the lines just to demonstrate the
kind of output I desire. Of course when used on real data each line will have
different values.
Again thanks,
John


John Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology
Baltimore VA Medical Center
10 North Greene Street
GRECC (BT/18/GR)
Baltimore, MD 21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing)
>>> "jim holtman" <jholtman at gmail.com> 9/30/2007
11:24 PM >>>The easiest thing is to same the result from 'lm' and then you can use
that to extract any of the information that you want.  If you are
going to do thousands of regressions, then you can make a list of 'lm'
results, or if that is too memory intensive (depends on the size of
the regressions), you could same them to a file with 'save'.  It all
depends on what you want to do with them.  One of my favorite
questions is "tell me what you want to do, not how you want to do it".
 What is the intended purpose?

On 9/30/07, John Sorkin <jsorkin at grecc.umaryland.edu>
wrote:> Jim,
> Again thank you for your quick reply. Your suggestion does not give me
exactly what I want:
>
> >
whatIwant<-list(,summary(fitdelete)$call,summary(fitdelete)$coefficients)
> > whatIwant
> [[1]]
> lm(formula = y ~ x)
>
> [[2]]
>            Estimate Std. Error   t value     Pr(>|t|)
> (Intercept) 4.927791 2.62115494  1.880007 6.307727e-02
> x           1.887634 0.04372724 43.168382 1.410167e-65
>
> What I want is something that looks more like a table:
>
>            lm(formula = y ~ x) Estimate Std. Error   t value    
Pr(>|t|)
> (Intercept)                     4.927791 2.62115494  1.880007 6.307727e-02
> x                               1.887634 0.04372724 43.168382 1.410167e-65
>
> Thanks,
> John
>
>
>
> John Sorkin M.D., Ph.D.
> Chief, Biostatistics and Informatics
> University of Maryland School of Medicine Division of Gerontology
> Baltimore VA Medical Center
> 10 North Greene Street
> GRECC (BT/18/GR)
> Baltimore, MD 21201-1524
> (Phone) 410-605-7119
> (Fax) 410-605-7913 (Please call phone number above prior to faxing)
>
> >>> "jim holtman" <jholtman at gmail.com>
9/30/2007 11:00 PM >>>
> try using a 'list':
>
> whatIwant<-list(call=summary(myreg)$call,
coef=summary(myreg)$coefficients)
>
> On 9/30/07, John Sorkin <jsorkin at grecc.umaryland.edu> wrote:
> > Widows XP
> > R 2.3.1
> >
> > I have been trying to make a data structure that will contain both the
coefficients from a linear regression along with column and row titles AND the
call, i.e.
> > myreg<-lm(y~x+y+z)
> >
whatIwant<-cbind(c(summary(myreg)$call,"",""),summary(myreg)$coefficients)
> >
> > Neither the statement above, nor any one of twenty variations I have
tried work. I would appreciate any advice.
> > Thanks,
> > John
> >
> >
> >
> >
> > John Sorkin M.D., Ph.D.
> > Chief, Biostatistics and Informatics
> > University of Maryland School of Medicine Division of Gerontology
> > Baltimore VA Medical Center
> > 10 North Greene Street
> > GRECC (BT/18/GR)
> > Baltimore, MD 21201-1524
> > (Phone) 410-605-7119
> > (Fax) 410-605-7913 (Please call phone number above prior to faxing)
> >
> > Confidentiality Statement:
> > This email message, including any attachments, is for the
so...{{dropped}}
> >
> > ______________________________________________
> > 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.
> >
>
>
> --
> Jim Holtman
> Cincinnati, OH
> +1 513 646 9390
>
> What is the problem you are trying to solve?
>
> Confidentiality Statement:
> This email message, including any attachments, is for the ...{{dropped}}

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