Graphics Reference
In-Depth Information
sp
+
geom_point(colour
=
"grey60"
)
+
stat_smooth()
sp
+
geom_point(colour
=
"grey60"
)
+
stat_smooth(method
=
loess)
Figure 5-19. A LOESS fit
Additional parameters can be passed along to the
loess()
function by just passing them to
stat_smooth()
.
Another common type of model fit is a logistic regression. Logistic regression isn't appropriate
for the
heightweight
data set, but it's perfect for the
biopsy
data set in the
MASS
library. In