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From |
Nick Cox <njcoxstata@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Tobit graphics |

Date |
Sun, 30 Dec 2012 15:19:22 +0000 |

-yaxis(1 2)- is a standard -twoway- option. It belongs in your -addplot()- option. Nick On Sun, Dec 30, 2012 at 1:53 PM, Kakouros, Nikolaos <Nikolaos.Kakouros@umassmemorial.org> wrote: > Where do you declare yaxis(1 2) though? > It is not an option for marginsplot and setting it in the first addplotted scatter as an option doesn't seem to make a difference. I used yaxis(2) for the secondary scatter and lfitci but that places the second y axis to the left of the first one. > Sure - I can move it to the right with the graph editor but where's the fun in that? Nick Cox [njcoxstata@gmail.com] > In this kind of problem I usually declare > > yaxis(1 2) > > and then if stuff I want is in the wrong place so far as I am concerned I write > > yaxis(2) > > instead of > > yaxis(1) > > and/or vice versa. > > Nick > > On Thu, Dec 27, 2012 at 6:23 PM, Kakouros, Nikolaos > <Nikolaos.Kakouros@umassmemorial.org> wrote: > >> The plot thickens on the Tobit graphics. >> >> marginsplot, recast(line) recastci(rarea) addplot( (scatter x y) (lfictci x2 y2) (scatter x2 y2)) >> >> worked, but the second set of data needs a different y axis. >> >> I tried >> >> marginsplot, recast(line) recastci(rarea) addplot( (scatter x y) (lfictci x2 y2, yaxis(2)) (scatter x2 y2, yaxis(2))) >> >> but the second y axis ends up stacked on the left rather than being on the right. > > Kakouros, Nikolaos > >> Trust me, Dr Cox. For me to get this to work, quite a bit of luck would be needed. >> Your recommendation worked, though. >> >> I used >> marginsplot, recast(line) recastci(rarea) addplot( (scatter x y) (lfictci x2 y2) (scatter x2 y2)) >> >> and it worked great! > > Nick Cox > >> Not clear why luck should be needed, but it's not necessary to specify -twoway-. Otherwise specify what kind of error message you got. > > On 27 Dec 2012, at 13:21, "Kakouros, Nikolaos" > <Nikolaos.Kakouros@umassmemorial.org > >>> Ro'I, >>> Many thanks - that works great! I changed recastci(rline) to >>> (rarea) to get the same shaded CI effect as lfitci. >>> >>> Now - is it possible to show this data on the same graph as the other >>> dataset's scatter and lfitci? >>> I tried >>> marginsplot, recast(line) recastci(rarea) addplot(twoway (scatter x >>> y) (lfictci x2 y2) (scatter x2 y2)) >>> >>> I also tried >>> Twoway (marginsplot, recast(line) recastci(rarea) addplot(scatter x >>> y)) (lfictci x2 y2) (scatter x2 y2) >>> >>> >>> with no luck... > > Ro'i Zultan > >>> I think the following should work for you: >>> tobit x y, ll(0) >>> margins, at(y=(0(10)100)) >>> marginsplot, recast(line) recastci(rline) addplot(scatter x y) >>> >>> With the margins parameters adjusted for your data. > > 2012/12/26 Kakouros, Nikolaos <Nikolaos.Kakouros@umassmemorial.org> > >>>> I have a set of data and using a twoway scatter and lfitci to show >>>> graphically along with the least-squares regression line and >>>> confidence intervals. >>>> Another set of data, however, is heavily censored with the dependent >>>> variable hitting a floor at 0 (and about a third of values actually >>>> being at zero). >>>> I noted the recent discussion on Tobit, chaired by Maarten Buis. >>>> >>>> I used tobit x y, ll(0) for the regression but not sure how to >>>> recreate the lfitci output (regression line and confidence intervals) >>>> using the tobit regression info to produce the scatter graphic. * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**RE: st: Tobit graphics***From:*"Kakouros, Nikolaos" <Nikolaos.Kakouros@umassmemorial.org>

**References**:**st: Tobit graphics***From:*"Kakouros, Nikolaos" <Nikolaos.Kakouros@umassmemorial.org>

**Re: st: Tobit graphics***From:*"Ro'i Zultan" <zultan@bgu.ac.il>

**RE: st: Tobit graphics***From:*"Kakouros, Nikolaos" <Nikolaos.Kakouros@umassmemorial.org>

**Re: st: Tobit graphics***From:*Nick Cox <njcoxstata@gmail.com>

**RE: st: Tobit graphics***From:*"Kakouros, Nikolaos" <Nikolaos.Kakouros@umassmemorial.org>

**RE: st: Tobit graphics***From:*"Kakouros, Nikolaos" <Nikolaos.Kakouros@umassmemorial.org>

**Re: st: Tobit graphics***From:*Nick Cox <njcoxstata@gmail.com>

**RE: st: Tobit graphics***From:*"Kakouros, Nikolaos" <Nikolaos.Kakouros@umassmemorial.org>

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