st: graph bar & colour

["Allan Reese (Cefas)" <allan.reese@cefas.co.uk>]

I've been drawing a clustered barchart and found a curious comment in
the [G] Manual: "asyvars is seldom specified".

It's curious because this seemed the most obvious way to get coloured
bars to distinguish groups.

   graph bar (count) x, over(gvar1) over(gvar2)

gave the shape of the graph, but all bars are the same colour.  We could
have -separate-d x into the gvar1 groups, but easier to

   graph bar (count) x, over(gvar1) asyvar over(gvar2) 

The spacing can then be adjusted using -gap- or -bargap-

   graph bar (count) x, over(gvar1, gap(5)) asyvar bar(1, col(orange))
... over(gvar2)

Another curiosity: the command allows choice of -color- for each bar but
only an overall -intensity-.

Allan


R Allan Reese
Senior statistician, Cefas
The Nothe, Weymouth DT4 8UB 

Tel: +44 (0)1305 206614 -direct
Fax: +44 (0)1305 206601 

www.cefas.co.uk 




***********************************************************************************
This email and any attachments are intended for the named recipient only.  Its unauthorised use, distribution, disclosure, storage or copying is not permitted.  If you have received it in error, please destroy all copies and notify the sender.  In messages of a non-business nature, the views and opinions expressed are the author's own and do not necessarily reflect those of the organisation from which it is sent.  All emails may be subject to monitoring.
***********************************************************************************


*
*   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/