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From |
Austin Nichols <austinnichols@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Stacked bar graph with twoway__histogram_gen |

Date |
Wed, 7 Mar 2012 13:58:44 -0500 |

Stefano Lombardi <lombardi_stefano@fastwebnet.it>: See also -bihist- and -byhist- on SSC. On Wed, Mar 7, 2012 at 1:38 PM, Austin Nichols <austinnichols@gmail.com> wrote: > Stefano Lombardi <lombardi_stefano@fastwebnet.it>: > At a glance, your -rbar- goes from freq_2 to the sum, not freq_1 to the sum. > > On Wed, Mar 7, 2012 at 1:28 PM, Stefano Lombardi > <lombardi_stefano@fastwebnet.it> wrote: >> Dear Statalisters, >> >> I have a problem in plotting a stacked bar graph. I have read some >> documentation on the Internet and I am really close to obtain what I need, >> but still I cannot manage to solve one issue (I haven't found any similar >> problem on the Statalist archive..) >> >> In practice, I have one duration variable in months (overall survival, "os") >> which as usual can be either censored or uncensored (the failure dummy is >> "status_os"; 1 = os is uncensored). I need to create a stacked bar graph >> with different colors for censored and uncensored data (blue and red, >> respectively). My code is the following: >> >> use "epd0", clear >> twoway__histogram_gen os if status_os==0, gen(freq_1 x, replace) /// >> freq start(0) width(5) >> drop if missing(x) >> keep freq_1 x >> save f1, replace >> >> use "epd0", clear >> twoway__histogram_gen os if status_os==1, gen(freq_2 x, replace) /// >> freq start(0) width(5) >> drop if missing(x) >> keep freq_2 x os >> >> merge 1:1 x using f1 >> mvencode freq_1 freq_2, mv(. = 0) >> >> egen freq = rowtotal(freq_1 freq_2) >> >> twoway /// >> (bar freq_1 x, barw(5) bcolor(red)) /// >> rbar freq_2 freq x, barw(5) bcolor(blue) /// >> legend(order(1 "Uncensored" 2 "Censored")) /// >> xtitle("`: var label os'") ytitle(Frequency) >> >> Everything looks perfect but for one thing. In one bin there is a blank gap >> between the lower red bar (which counts for two observations) and the upper >> blue bar (other two observations). >> Actually -- also by checking the previously generated frequencies -- the >> lower bar should correspond to three observations, hence the blank gap >> should be red. >> >> Can you suggest any solution? It may be a coincidence, but that bin is the >> only one where there should be plotted more uncensored (red) data than >> censored (blue) ones. * * 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/

**References**:**st: Stacked bar graph with twoway__histogram_gen***From:*Stefano Lombardi <lombardi_stefano@fastwebnet.it>

**Re: st: Stacked bar graph with twoway__histogram_gen***From:*Austin Nichols <austinnichols@gmail.com>

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