Re: st: RE: Bar chart to display results from crosstabs

[Geoffrey Wallace <gw46@cornell.edu>]

Hi Nick,

I was able to get the basic outlines of what I was looking for using 
-spineplot- and will only need to tinker with the options to get the 
desired appearance.

Thanks again, this was really helpful.

Cheers, Geoff

Nick Cox wrote:
> -graph bar- is not much use directly. You would need to do some
> pre-processing first. (The essential reason is that -graph bar- is a
> wrapper for -collapse-, not -contract-.) 
>
> See -catplot- and -tabplot- on SSC which give more direct solutions. 
>
> Also, -spineplot- on the Stata Journal site. Use -findit- to get
> locations. And two papers in the Stata Journal itself: 
>
> SJ-8-1  gr0031  . . . . . . . . . . . Speaking Stata: Spineplots and
> their kin
>         (help spineplot if installed) . . . . . . . . . . . . . . .  N.
> J. Cox
>         Q1/08   SJ 8(1):105--121
>         discusses spineplots (mosaic plots), a type of bar chart for
>         showing frequencies, proportions, or percentages of cross-
>         classified categorical variables
>
> SJ-4-2  gr0004  .  Speaking Stata: Graphing categorical and
> compositional data
>         . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  N.
> J. Cox
>         Q2/04   SJ 4(2):190--215                                 (no
> commands)
>         discusses graphical possibilities for categorical and
>         compositional data
>
> The last is accessible to all under the SJ's 3-year rule. 
>
> Nick 
> n.j.cox@durham.ac.uk 
>
> Geoffrey Wallace, Ph.D. candidate 
>
> I want to use a bar chart to display in a more visual manner the column 
> percentages from a crosstab for two dichotomous variables, such as 
> democracy and first violator.
>
> For the two-way table, I used the command
> --tab democ firstviol, column--
>
> Which gives the following output.
>
>
>       First |       Democracy
>    violator |        No        Yes |     Total
> -----------+----------------------+----------
>          No |        89         40 |       129
>             |     57.05      72.73 |     61.14
> -----------+----------------------+----------
>         Yes |        67         15 |        82
>             |     42.95      27.27 |     38.86
> -----------+----------------------+----------
>       Total |       156         55 |       211
>             |    100.00     100.00 |    100.00
>
> The final product I would hope for in the corresponding bar would have 
> two separate pairs of columns. The first fair would have the relative 
> percentages for democracies (democ=1) and nondemocracies (democ=0) that 
> are not first violators (firstviol=0) (i.e. 72.73 and 57.05), and the 
> second would be the corresponding pair for first violators (firstviol=1)
>
> (i.e. 27.27 and 42.95).
>
> I'm assuming I would use some version of the -graph bar- command, but 
> I'm having trouble figuring how to specify the column percentages.
>
>
> *
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--
Geoffrey Wallace
PhD Candidate
Department of Government
214 White Hall
Cornell University
Ithaca, NY 14853
t.202.302.4209
f.607.255.4530
http://www.people.cornell.edu/pages/gw46/
*
*   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/