Thanks Michael - I now inserted the correct image for Achim example code.


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On Wed, Jul 7, 2010 at 5:19 PM, Michael Friendly <friendly@yorku.ca> wrote:

> Tal Galili wrote:
>
>> Hello David,
>> Thanks to your posting I started looking at the function in the arm
>> package.
>>  It appears this function is quite mature, and offers (for example) the
>> ability to easily overlap coefficients from several models.
>>
>> I updated the post I published on the subject, so at the end of it I give
>> an
>> example of comparing the coef of several models:
>>
>> http://www.r-statistics.com/2010/07/visualization-of-regression-coefficients-in-r/
>>
>> Thanks again for the pointer.
>>
>> Best,
>> Tal
>>
>
> Achim Zeileis wrote:
>
>> Re: more mature. arm's coefplot() is more flexible in certain respects,
>> mine is more convenient in others. The overlay functionality is something
>> arm's coefplot() is better in and it also as some further options (vertical
>> vs. horizontal etc.). My coefplot() has the advantage that it does not need
>> any modification as long as coef() and vcov() methods are available.
>> Furthermore, "level" can specify the significance level (instead of always
>> using one and two standard errors, respectively).
>> But it shouldn't be too hard to create a superset of all options.
>>
>
>
> @Tal:
> For the example using library(arm) and the Mroz data, you posted the wrong
> image.  And loose the intercept in the example.
>
> @Achim:
> It would be worthwhile combining the generality of your version with the
> overlay capability of the arm version, which is extremely useful for model
> comparison.  However, the arm version uses S4 methods.
>
> -Michael
>
>
> --
> Michael Friendly     Email: friendly AT yorku DOT ca
> Professor, Psychology Dept.
> York University      Voice: 416 736-5115 x66249 Fax: 416 736-5814
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>
>

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