Em 22/4/2011 21:48, David Winsemius escreveu:
On Apr 22, 2011, at 2:16 PM, JJCV wrote:
Hello.
I did a graphic with the next code:
T=c(10,15,20,25,30)
p=c(1003,1005,1010,1011,1014)
plot(T, p, xlab=" ",, ylab=" ", pch=1, cex=2, lwd=2,
xlim=c(5,30), ylim=c(1000,1015))
abline(lm(p ~ T), lwd=2)
lm(p ~ T)
I want to see the regression coefficient in the graphic. ¿How can I do
that?
> coef(lm(p ~ T)
+ )
(Intercept) T
997.40 0.56
> text(10,1010, labels=paste("Slope =", coef(lm(p ~ T) )[2]) )
I suppose you could format it with formatC() or sprintf() if you wanted
it to fewer than 10 decimal places.
Wouldn't round() work as well?
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