[R] Removing description from lm()

[Uwe Ligges]

On 05.10.2014 15:02, Duncan Murdoch wrote:
> On 05/10/2014, 7:21 AM, billy am wrote:
>> Hi ,
>>
>> When I run the following code , I get both the description and the value ,
>> eg : Intercept and 0.5714286.
>>
>> Is there a way to extract just the value 0.5714286? Thanks!
>>
>>
>>> x <- c(1,5,3,1)> y <- c(5,8,2,3)> lm(x~y)
>> Call:
>> lm(formula = x ~ y)
>>
>> Coefficients:
>> (Intercept)            y
>>       0.5714       0.4286
>>> lm(x~y)$coefficient[1](Intercept)
>>    0.5714286
>>
>
> It's a name, not a description.  The result is a named vector.
>
> To get rid of the name, call unname() on it, i.e.
>
> unname(lm(x~y)$coefficient[1])

I guess the OP is going to use the name (here "(Intercept)" without the 
quotes) to extract the value, hence (also using the extractior function 
coef()):

coef(lm(x~y))["(Intercept)"]

Best,
Uwe Ligges



>
> Duncan Murdoch
>
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