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From |
Marshall Garland <marshall.w.garland@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: Adding a Reference Point to a -tabplot- Graph |

Date |
Fri, 24 Jul 2009 14:03:05 -0500 |

Hi Nick- Thanks for the guidance. I'll play around with it using your suggestion. Thanks again for your response. -Marshall On Fri, Jul 24, 2009 at 12:13 PM, Nick Cox<n.j.cox@durham.ac.uk> wrote: > You'd need to replicate -tabplot-'s internal logic. So for example the > height of the top of each bar is in essence > > category_code (1, 2, 3, etc.) > > PLUS > > [(Frequency in cell)/(Maximum frequency over all cells)] > * Maximum height of bar > > So you'd need to replicate that kind of calculation for whatever you > were superimposing on top. > > My guess is that this is entirely possible but not trivial. > > Nick > n.j.cox@durham.ac.uk > > Marshall Garland > > I'm attempting to generate graphs across multiple levels (schools) > that display the percentage of students within a particular school and > within a particular subgroup (let's say, gender, or ethnicity, etc.) > that accomplished a particular task. The data are longitudinal, so > these outcomes are captured across multiple years (two, to be > precise). Thus, my X and Y variable are both categorical. -tabplot-, > of course, works brilliantly for this. > > However, I would also like to add a reference point to each category > that shows the aggregate percentage (that is, across all schools in a > given year, not just a particular one) for each task for each student > subgroup. It seems as though some overlay using the addplot option for > -tabplot- would work, but I can't seem to figure out how to do this. > I've experimented with using -combine graph- to add additional figures > of the aggregate results for each year, but I'm unhappy with the > results. > > Here's my syntax thus far: > > ***figure 2*** > levelsof school_name, local(levels) > foreach school_name of local levels { > tabplot ethniccode enroll_type_final, by (hs_grad_year) > percent(ethniccode hs_grad_year) ytitle(, orient(hor)) /// > scheme(s2color) showval /// > ylabel(, nogrid) legend(nostack rows(1) size(small) nobox > region(lcolor(white) lwidth(vvvthin))) /// > xtitle(`school_name') xtitle(, justification(center)) /// > by(, note(, color(white))) > } > > My data look like this: > > Student School Year Y X > 1 A 2007 1 3 > 2 A 2008 3 2 > 4 B 2008 4 5 > 5 B 2007 1 4 > 7 C 2007 2 2 > 8 C 2008 4 4 > > Any ideas or recommendations would be greatly appreciated. > > Cheers, > > -Marshall > > -tabplot- reference: > http://www.stata-journal.com/sjpdf.html?articlenum=gr0004 > * > * 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/ > > * > * 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/ > * * 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: Adding a Reference Point to a -tabplot- Graph***From:*Marshall Garland <marshall.w.garland@gmail.com>

**st: RE: Adding a Reference Point to a -tabplot- Graph***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

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