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

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: Re: st: Regaining control over axis ranges |

Date |
Fri, 28 Dec 2012 21:05:04 +0000 |

Some ideas at http://www.stata.com/support/faqs/graphics/scale-breaks/ Nick On Fri, Dec 28, 2012 at 10:24 AM, annoporci <annoporci@gmail.com> wrote: > This is not a pressing issue at all, but I'd like to consign here for the > record and in case someone is interested and/or knows how to deal with it. > > > A short while ago I asked: > > >>>>> I'm trying to shorten the y axis of a graph. > > > and Nick suggested the solution of omitting data with the -if- and > -inrange- options: > > sysuse ibm,clear > twoway scatter ibm date if inrange(ibm,-1,+1) > > This solution worked well and satisfied me until I experimented with > connected lines instead of scatter points. The -if inrange()- solution > omits the data, with the result that connecting the remaining data is > misleading, especially in a time series context: > > sysuse ibm,clear > twoway scatter ibm date if inrange(ibm,-1,+1), connect(line) > /// similar thing using tsset: > tsset date > twoway tsline ibm if inrange(ibm,-1,+1) > > What do I mean by "misleading"? well suppose your data is usually between -1 > and 1 but on one occasion (e.g. Black Monday) it is something like -5. If > you include the outlier, the rest of the data will look very flattened and > the graph won't be informative. If you omit the outlier, the rest of the > data will be spread over a greater area and look much clearer but connecting > the dots will give the impression that the outlier isn't there at all (since > it is omitted). > > This is a situation where I would like to be able to "shorten the y axis" > (my initial query), as in "zooming" and slicing through connected lines, > neither omitting the data nor showing it. > > > -- > Patrick Toche. * * 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: Re: Re: st: Regaining control over axis ranges***From:*annoporci <annoporci@gmail.com>

**References**:**st: Regaining control over axis ranges***From:*annoporci <annoporci@gmail.com>

**Re: st: Regaining control over axis ranges***From:*Nick Cox <njcoxstata@gmail.com>

**Re: st: Regaining control over axis ranges***From:*annoporci <annoporci@gmail.com>

**Re: st: Regaining control over axis ranges***From:*Nick Cox <njcoxstata@gmail.com>

**Re: Re: st: Regaining control over axis ranges***From:*annoporci <annoporci@gmail.com>

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