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Re: st: changing bar order on twoway bar chart


From   Nick Cox <njcoxstata@gmail.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: changing bar order on twoway bar chart
Date   Tue, 18 Sep 2012 20:44:42 +0100

The essence of the problem is (likely to be that) you need a variable -- say -axis2- -- that defines the order of the bars even if you need to type in yourself as 1,2,3,4,5...

Nick

On 18 Sep 2012, at 19:14, Ben Cooper <ben.cooper@wustl.edu> wrote:


I have a graph dilemma that I can not solve. I have successfully used the syntax below from the URL (http://www.survey-design.com.au/Stata%20Graphs.html ) to create a two-way horizontal bar chart depicting odds ratios and CIs above and below the value of 1.

twoway bar estimate axis, base(1) horizontal barw(.70) color("0 0 192") scheme(s1color) ///
           xline(1) ylab(, valuelabel angle(0)) ||     ///
rcap min95 max95 axis, horizontal lwidth(medthick) lcolor ("255 127 0") msize(large) ///
           title("Outcome: Disconnected")  ///
           legend(order(1 "point estimate" 2 "95% CI") pos(6))

The problem is that Stata sorts the bars in order of the magnitude of the odds ratio and this simply will not work for my project. I know I can do custom bar sorting with the 'graph hbar x, over(y)' command but then I lose the ability to use the rcap option for error bars and the base(1) option to set the bars starting at 1 (since they are ORs). I have tried creating each bar separately and putting all on one graph but Stata still continues to sort the bars based on the value in the variable estimate. I certainly like all the features of the twoway bar approach, except this one issue of not being able to sort the bars.
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