st: Suppress labeling of categorical axis values in graph bar/hbar

[Davide Cantoni <davide.cantoni@gmail.com>]

Hello,

I would like to draw a bar chart displaying the values of a given
variable for all the observations in the dataset. However, since there
are many observations, I would like to label only some of them (some
representative cases). Conceptually, this is similar to this working
example:

*** begin example
sysuse auto, clear
graph hbar (asis) price, over(make, sort(price))
*** end example

As you can see, putting all the labels on the categorical axis leads
to overcrowding. What I would like to do is to label only some
representative examples, e.g. only "Renault Le Car", "VW Diesel" and,
say, "Lincoln Versailles".  I guess I can achieve the suppression of
labels with some relabel() command inside the over() parenthesis, but
given the large number of observations, this would be incredibly
cumbersome. Any other suggestions?

Thanks in advance,

Davide
*
*   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/