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From |
Venable <venablito@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
st: Multiple density plots, rotated and distributed on x-axis |

Date |
Mon, 1 Aug 2011 14:26:48 -0400 |

Dear Statalist, I would like to create a graph that contains several kernel density plots, but with the plot rotated 90% right from the usual orientation, and with each plot aligned to a point on the x axis. To be more concrete (borrowing an example from Angrist and Pischke, Mostly Harmless Econometrics, Figure 3.1.1), suppose I wanted to show the distribution of incomes in the US at different levels of eduction, e.g. 8 years, 12 years, 14, 16, etc. The x-axis of the graph would be years of education and the y axis the level of income. Above each year, there would be a kernel density plot of incomes for that year, with each rotated to the right, so that the "height" (density) is horizontal distance. An additional bonus would be to be able to mark a few quantiles on each density and connect these between years. For example, mark the 25th, median and 75th percentile for each year and have these points connected. Is this possible in Stata? I fear I may not be explaining this well in words, in spite of the fact that it is very easy to show as a picture. Unfortunately Figure 3.1.1 is not available in the Google Preview version of Mostly Harmless Econometrics, so I have posted a simple hand-drawn version here: http://dl.dropbox.com/u/2937392/density-plot-sketch.pdf Many thanks. * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: Multiple density plots, rotated and distributed on x-axis***From:*Scott Merryman <scott.merryman@gmail.com>

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