[R] how to rotate the histogram

[Abelian]

Dear all
I want to combine two figures on one plot. First figure display the
data distribution. The x-axis of first figure is individual's ranking
and the y-axis of first figure is probability. However, the second
figure is a histogram about probability. In order to make the figure
more clearly, i want to put those two figure together. But i have a
problem that i can not rotate the histogram.Because i want put the x-
axis of histogram on the left side of first figure.
Can anyone provide some way to solve this problem.
Sinerely