-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
[email protected]
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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