I need to plot a bar chart showing counts and a line chart showing rate all in one chart, I can do both of them separately, but when I put them together, I scale of the first layer (i.e. the geom_bar), is overlapped by the second layer (i.e. the geom_line), can I move the axis of the geom_line to the right?
Thanks!
It's not possible in ggplot2 because plots with multiple y scales are fundamentally flawed.
<rant>
Sometimes a client wants two y scales. Giving them the "flawed" speech is often pointless.
But I like the ggplot2 insistence on doing things the right way. I am sure that ggplot is
infact education the average user about proper visualization techniques.
</rant>
Maybe you can use faceting and scale free to compare the two dataseries? - e.g. look here: http://rwiki.sciviews.org/doku.php?id=tips:graphics-ggplot2:aligntwoplots