[R] Extracting coefficients' standard errors from linear model

[Marc Schwartz]

Or use:

   mod <- lm(var1 ~ var2 + var3 + var4)

   coef(summary(mod))[, 2]

or

   coef(summary(lm.D9))[, "Std. Error"]

if you prefer using column names.

coef() extracts the model coefficients from the lm object and the 
additional content in a summary.lm object.

There are accessor functions for model objects and these are referenced 
in "An Introduction to R" and in the See Also section of ?lm.

HTH,

Marc Schwartz

Henrique Dallazuanna wrote:
> Try:
> 
>  summary(lm.D9)[["coefficients"]][,2]
> 
> On Fri, Apr 25, 2008 at 10:55 AM, Uli Kleinwechter <
> ulikleinwechter at yahoo.com.mx> wrote:
> 
>> Dear all,
>>
>> Hope this question is not too trivial...
>>
>> In order to correct standard errors from an estimation of a fixed
>> effects regression model y need to extract the vector of standard errors
>> of the coefficients of a simple linear model estimated using
>>
>> lm(var1~var2+var3+var4)
>>
>> Unfortunately I can't find out the corresponding function.
>>
>> Thank you very much for your help.
>>
>> Uli
>>