missing geom_line

[Tom W]

Hey all

I'm missing something fundamental about geom_line. I'm truing to plot
a line between a discrete x variable

library(ggplot2)

Ed<-data.frame(x.1 = c(1,2,3),
y.1 = c(8, 9.5, 2))

print(ggplot(Ed, aes(x = as.factor(x.1), y = y.1)) +
geom_line() +
scale_x_discrete() +
scale_y_continuous())

but this just results in a blank geom. What am I missing?

Thanks

Tom

[Ista Zahn]

The goup asthetic is set to the interaction of all factors in the
plot. You need to override this using aes(goup= )

For example;

ggplot(Ed, aes(x = as.factor(x.1), y = y.1)) +

geom_line(aes(group=1)) +
scale_x_discrete() +
scale_y_continuous()

Best,
Ista

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Ista Zahn
Graduate student
University of Rochester
Department of Clinical and Social Psychology
http://yourpsyche.org