[R] ols Error : missing value where TRUE/FALSE needed

[Frank E Harrell Jr]

Charles Evans wrote:
> I have installed Hmisc and Design.  When I use ols, I get the  
> following error message:
> 
> Error in if (!length(fname) || !any(fname == zname)) { :
> 	missing value where TRUE/FALSE needed
> 
> The model that I am running is:
> 
>  > ecools <- ols(eco$exp ~ eco$age + eco$own + eco$inc + inc2, x=TRUE)

ecools <- ols(exp ~ age + own + inc + inc2, data=eco, x=TRUE)

Watch out for variables named exp but probably OK.

Frank Harrell

> 
> I have tried several other combinations of arguments that take TRUE/ 
> FALSE values, but no luck.
> 
> Ultimately, I am trying to calculate robust standard errors.
> 
> Any help would be appreciated.
> 
> Charles Evans
> Executive Director
> Free Curricula Center
> 
> 
> 
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> 
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-- 
Frank E Harrell Jr   Professor and Chair           School of Medicine
                      Department of Biostatistics   Vanderbilt University