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

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Graph Mean SD of continuous variable over categorical variable - but with a twist |

Date |
Tue, 25 Oct 2011 09:32:45 +0100 |

See also http://www.stata.com/statalist/archive/2011-09/msg01293.html for an answer on 28 September to what seems like the same question, just asked differently. Nick On Tue, Oct 25, 2011 at 8:58 AM, Nick Cox <njcoxstata@gmail.com> wrote: > See also > > SJ-5-4 gr0023 . . . . Stata tip 27: Classifying data points on scatter plots > . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N. J. Cox > Q4/05 SJ 5(4):604--606 (no commands) > tips for using separate, gray-scale gradation, and text > characters as class symbols to classify data points on > a scatter plot > > for technique relevant to the "for each group" part of the question. > In a sentence, use -separate- to separate the response into different > variables. > > Nick > > On Tue, Oct 25, 2011 at 8:35 AM, Maarten Buis <maartenlbuis@gmail.com> wrote: >> On Tue, Oct 25, 2011 at 9:02 AM, Lars Folkestad wrote: >>> I am trying to depict the differences in mean+-SD of two continuous >>> Variables over a categorical variable <snip> >>> scatter mean cat || rcap upper lower cat >> <snip> >>> But this does not give me the option to change the colour of the >>> Mean (dot) or the SD (bars) for each group, which visually would >>> Be preferable. >> >> It does give you that possibility, you just need to find the right >> options. That command consists of two parts separated by -||-. The >> first part graphs mean against the categorical variable and the second >> graphs the standard deviation bars against the categorical variable. >> To find the options possible after the first command type in Stata >> -help twoway scatter- and to find the options possible after the >> second command type in Stata -help twoway rcap-. In the example below >> I give a silly (and extremely ugly) example of how you can change the >> way your graph looks: >> >> *--------------------- begin example ---------------------- >> sysuse auto, clear >> egen mean = mean(price) , by(rep78) >> egen sd = sd(price), by(rep78) >> gen upper = mean + sd >> gen lower = mean - sd >> >> scatter mean rep78 , /// plots the mean against rep78 >> msymbol(S) /// change the symbol to a solid square >> msize(huge) /// make the marker size huge >> color(purple) /// change the color of the symbol to purple >> || /// start a new overlay graph >> rcap upper lower rep78, /// plots the standard deviation against rep78 >> lpattern(longdash) /// make the line dashed >> lwidth(thick) /// make the line thick >> lcolor(pink) // make the the line pink >> *---------------------- end example ----------------------- >> (For more on examples I sent to the Statalist see: >> http://www.maartenbuis.nl/example_faq ) >> > * * 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/

**Follow-Ups**:**Re: st: Graph Mean SD of continuous variable over categorical variable - but with a twist***From:*Lars Folkestad <lfolkestad@health.sdu.dk>

**References**:**st: Graph Mean SD of continuous variable over categorical variable - but with a twist***From:*Lars Folkestad <lfolkestad@health.sdu.dk>

**Re: st: Graph Mean SD of continuous variable over categorical variable - but with a twist***From:*Maarten Buis <maartenlbuis@gmail.com>

**Re: st: Graph Mean SD of continuous variable over categorical variable - but with a twist***From:*Nick Cox <njcoxstata@gmail.com>

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