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

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

Subject |
RE: st: RE: old question, new solutions? |

Date |
Tue, 17 Nov 2009 11:21:55 -0000 |

George seemed a bit open to a range of plots under this heading, so I broadened the topic a bit. Besides, the thread is as usual open to widening comments of standard form: 1. You mentioned that, but you may also be interested in this other thing. 2. You are using that, but you would be better off doing this other thing. 3. Other people interested in this thread may want to know of this other thing too. 4. Look at me! I am a clever guy, and I wrote something very marginally related to this topic. That aside: -serrbar- plots whatever you feed to it, so could show sd, se or anything else as +/- bars. -stripplot- plots (in this context) se-based intervals. 68% intervals, or whatever, could be chosen therefore. Clearly, there are lots of (excellent) alternatives. Nick n.j.cox@durham.ac.uk Austin Nichols Nick-- Do the proposed solutions offer graphing bars +/- some number of standard deviations around the mean, rather than standard errors? I would think -vioplot- from SSC would be a better choice than either what the poster requests or a boxplot, but you could also adapt this approach for SDs: sysuse auto, clear levelsof rep78, loc(rs) miss loc g loc l foreach r of loc rs { qui su mpg if rep78==`r' if `r'>=. { loc l `l' `max' "`r'" loc r `max' loc max=`max'+1 } else { loc l `l' `r' "`r'" loc max=`r'+1 } loc g `g'||pci `=r(mean)-2*r(sd)' `r' loc g `g' `=r(mean)+2*r(sd)' `r' loc g `g'||scatteri `=r(mean)' `r', ms(o) msize(large) } tw `g' leg(off) xla(`l') On Mon, Nov 16, 2009 at 12:48 PM, Nick Cox <n.j.cox@durham.ac.uk> wrote: > But personally I'd prefer -stripplot- from SSC. Check out its -bar- > option. Nick Cox The official command -serrbar- does precisely this. Hoffman, George > Has anyone found/written/adapted a program which will plot means +/- sd > for observations of Y over categories X, without drawing a connecting > line between means (as in grby)? The desired solution would be like > 'graph box Y, over(X)' except that box would be a single symbol with > upper and lower ranges for sd or sd. Nick cox' civplot is close, but > doesn't allow sd's. > I've gotten around this by using joanne garrett's 'predxat' but that > plots se's not sd's. > > I understand some of the reasons why not to use this sort of display, > but it does occasionally become useful to display data. * * 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: How to plot frequencies of Likert scale over two groups (data shaping question)***From:*Philip Jones <pjones8@uwo.ca>

**Re: st: How to plot frequencies of Likert scale over two groups (data shaping question)***From:*Scott Merryman <scott.merryman@gmail.com>

**RE: st: How to plot frequencies of Likert scale over two groups (data shaping question)***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

**st: old question, new solutions?***From:*"Hoffman, George" <ghoffman@mcw.edu>

**st: RE: old question, new solutions?***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

**st: RE: old question, new solutions?***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

**Re: st: RE: old question, new solutions?***From:*Austin Nichols <austinnichols@gmail.com>

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