Displaying 3 results from an estimated 3 matches for "ricardo_ariasbrito".
2006 Nov 02
1
Res: graphics not find source
...plot this not appearing.
computer with problem:
/usr/share/X11/fonts$ ls
misc Type1 X11R7
In computer OK:
/usr/share/X11/fonts$ls
100dpi(*) 75dpi encodings fonts.cache-1 misc Type1
----- Mensagem original ----
De: Peter Dalgaard <p.dalgaard@biostat.ku.dk>
Para: Ricardo Arias Brito <ricardo_ariasbrito@yahoo.com.br>
Cc: r-help@stat.math.ethz.ch
Enviadas: Quarta-feira, 1 de Novembro de 2006 18:29:14
Assunto: Re: [R] graphics not find source
Ricardo Arias Brito <ricardo_ariasbrito@yahoo.com.br> writes:
>
> Hi,
>
> The plot function not produces graphics in linux.
>...
2006 Nov 01
1
graphics not find source
Hi,
The plot function not produces graphics in linux.
The msg:
Error in X11(): it was not possible to find no source
X11 Verifity if the way of sources is correct.
Any ideas?
Thanks, Ricardo
_______________________________________________________
Registre seu aparelho agora!
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2009 Jun 11
1
standard error beta glm
Dear All,
The std. error of the estimated coefficients
obtained by the summary.lm function can be calculated
as:
y=rnorm(20)
x=y+rnorm(20)
fit <- lm(y ~ x)
summary(fit)
sqrt( sum(fit$resid**2)/fit$df.resid * solve(t(model.matrix(fit))%*%model.matrix(fit)) )
Is posible calculate Std. Error for glm as lm, using
cov(hat beta) = phi * solve(t(X) %*% hat W %*% X)^-1
on R? Who is hat W and