[R] rotate plot

[Ron Ophir]

Dear group members,
I am trying to plot two adjacent plots using layout function. One plot is scatter plot and the other is density plot. However, I would like that the density plot would be present horizonaly in respect to the scatter plot.
|                                        |
|                                        |
|                                        |
|                                        |
*
|                *                      |  *
|        *       *      *             |    * *
|    *        *                        |         *
|                                        |     * *
|------------------------------   |*-------------------------------

How do I rotate 90 dgrees the entire density plot?
Thanks in advance,
Ron