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From |
"Nick Cox" <n.j.cox@durham.ac.uk> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
RE: st: RE: Problems with graphing in Stata 8 |

Date |
Tue, 24 Feb 2004 12:28:41 -0000 |

Uli Kohler points out privately that the last example should be line density? myresponse Also, he suggests that the -kdensity- calls would typically include a call to -at()-. That's arguable either way. Thanks to him for the correction and the suggestion. Nick n.j.cox@durham.ac.uk > -----Original Message----- > From: owner-statalist@hsphsun2.harvard.edu > [mailto:owner-statalist@hsphsun2.harvard.edu]On Behalf Of Nick Cox > Sent: 24 February 2004 11:54 > To: statalist@hsphsun2.harvard.edu > Subject: RE: st: RE: Problems with graphing in Stata 8 > > > As Don implies, Branko's problem is > essentially the same. > > Let's backtrack one step and look at the general > choice here. The graph overlay > facility is wonderful, but not always the > only solution, or even the best. There's > often a choice between fixing things upstream > (generating separate variables ahead of the graph) > and fixing things on the fly. > > If I had say five density estimates to superimpose, > I would be tempted to do something like this > > forval i = 1/5 { > qui kdensity myresponse if mygroup == `i', gen(density`i') > } > > line density? , clp(dash dot solid dash_dot "_#-#") > legend(label(1 "group 1") label(2 "2") label(3 "3") label(4 "4") > > label(5 "5")) > > The example shows how -label()- is an alternative to -order()- > (and incidentally why you might prefer -order()-). > > Of course, there is some inelegance in generating the > variables explicitly. The resulting graph command, however, > tends to be easier to write, to debug and to understand > afterwards. > > Do whatever seems more straightforward. > > Nick > n.j.cox@durham.ac.uk > > Donald Spady to Branko Milanovic > > > Try this > > twoway (kdensity HbH if sex==1) (kdensity HbH if sex==2, > > legend(order(1 > > "male" 2 "female"))) > > I am unsure just how the 'order' part works, but it is necessary. > > > >What would be the way to do exactly the same thing as asked > > by Donald but > > >using kdensity instead of scatter. That is, I need to have > > (say) kdensity > > >fct for sex=1 and then for sex=2 and I want the two to be > > overlaid. The > > >commands that I used in Stata 7 do not work in Stata 8. * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

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