Hello,
How can you expect to see the fit line if you are ploting x and y
values, not their logarithms?
And your definitions of x and y are wrong, they should use c().
x <- c(1,2,3,4,5)
y <- c(6,7,8,9,10)
plot(log(x), log(y))
fit <- lm(log(y) ~ log(x)) # Same as glm
abline(fit)
Please read R-intro, in the doc folder of your installation of R.
Hope this helps,
Rui Barradas
Em 14-12-2012 13:58, mrkooper escreveu:
I want to plot the regression line of a log regression into a plot with my
normal, nonlog, data.
for example
x <- (1,2,3,4,5)
y <- (6,7,8,9,10)
plot (x,y)
I tried a log-regression by
a <- glm (log(y) ~ log(x))
and then i tried to insert the answer to my graph, where the standard values
are shown:
abline (a, col="red")
unfortunately it does not work....
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