I need to create a line and bar panel chart with two different axes. I tried
in lattice but couldn't get it worked. Here is my code:
data(barley)
barchart(yield ~ variety | site, data = barley,
groups = year, layout = c(1,6), stack = F,
auto.key = list(points = FALSE, rectangles = TRUE, space =
"right"),
ylab = "Barley Yield (bushels/acre)",
scales = list(x = list(rot = 45)))
Suppose now I need to add two lines in each panel to show the cost (10^3
dollars) of each type (Svansota,....,Trebi) at different locations
(Waseca,..., Grand Rapids) for 1931 and 1932.
Can any body tell me how I should do to create this chart with two different
axes (one is yield, the other is cost)?
Thank you in advance!
Doug
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