[R] Error in model.frame

Gï¿½ran Brostrï¿½m Wed, 10 Dec 2003 02:44:36 -0800

I recently ran into the following:

> x <- c(1,2,4,3)
> lm(x ~ 1:length(x))
Error in model.frame(formula, rownames, variables, varnames, extras, extranames,  : 
        variable lengths differ


but

> lm(x ~ c(1:length(x)))

Call:
lm(formula = x ~ c(1:length(x)))

Coefficients:
   (Intercept)  c(1:length(x))  
           0.5             0.8  

and

> identical(1:4, c(1:4))
[1] TRUE

Should I report this as a bug?

Gï¿½ran
-- 
 Gï¿½ran Brostrï¿½m                    tel: +46 90 786 5223
 Department of Statistics          fax: +46 90 786 6614
 Umeï¿½ University                   http://www.stat.umu.se/egna/gb/
 SE-90187 Umeï¿½, Sweden             e-mail: [EMAIL PROTECTED]

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[R] Error in model.frame

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