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From |
"Martin Weiss" <[email protected]> |

To |
<[email protected]> |

Subject |
st: AW: AW: RE: re: Possible to have different colours for by() groups in histogram? |

Date |
Wed, 4 Nov 2009 14:18:02 +0100 |

<> In fact, there is a Stata tip by Nick http://www.stata-journal.com/sjpdf.html?articlenum=gr0023 where -separate- was advocated for a similar problem. Probably where I got the technique from in the first place. On the occasion of this thread, is it policy in the Stata manuals to provide references not cited in the main text? Kit Baum`s programming book http://www.stata-press.com/books/isp.html is certainly a very good source for Stata users, and does indeed contain two references to -separate-, but I do not see a citation in the text to it. Nick`s tip mentioned above probably deserves a place there as well... HTH Martin -----Ursprüngliche Nachricht----- Von: [email protected] [mailto:[email protected]] Im Auftrag von Martin Weiss Gesendet: Mittwoch, 4. November 2009 13:49 An: [email protected] Betreff: st: AW: RE: re: Possible to have different colours for by() groups in histogram? <> Thanks for the flowers! How about the -separate- trick, then? (Fishing for compliments, I know...) HTH Martin -----Ursprüngliche Nachricht----- Von: [email protected] [mailto:[email protected]] Im Auftrag von Nick Cox Gesendet: Mittwoch, 4. November 2009 13:49 An: [email protected] Betreff: st: RE: re: Possible to have different colours for by() groups in histogram? Thanks for this. The trick Martin used in his replies to your original of putting frequently used options in a local macro deserves emphasis. With not 2 but 3, 4, ... groups it becomes especially valuable. local opts discrete freq gap(5) xla(1/5) twoway histogram ease if group==1, color(red) `opts' || histogram ease if group==2, color(blue) `opts' by(group, legend(off)) Nick [email protected] Philip Jones Many thanks for the help Nick! That works perfectly. For others who may be searching about this question, it seems like you only need to include by(group) once in the command (with or without turning off the legend). Just a small point I found out running the command both ways. [email protected] >> . twoway histogram ease if group==1, color(red) gap(5) discrete freq >> by(group) /// >> || histogram ease if group == 2, color(blue) by(group, legend(off)) >> discrete freq xla(1/5) gap(5) Philip Jones > I would like to know if it is possible in Stata to have different > colours for plots in histograms created using the by() option. For > instance, if I would like to plot frequencies of a Likert scale about > the ease of a process (from 1 to 5) in two separate groups, I can > generate a nice histogram using the by() option, but both "sides" (or > plots) of the graph are the same colour. > > For instance, > > input group ease > 1 1 > 1 2 > 1 3 > 1 3 > 1 3 > 1 3 > 1 4 > 1 5 > 1 5 > 2 2 > 2 2 > 2 2 > 2 3 > 2 3 > 2 4 > 2 4 > 2 5 > 2 5 > end > graph twoway histogram ease, by(group) discrete frequency xtick(1(1)5) > xlabel(1(1)5) gap(5) color(red) > > This gives me a histogram, but I would like a different colour for > each > plot - say red for the plot on the left and blue for the one on the > right. > > I am sure there is a trivial way of achieving this, but I haven't been > able to find it. The barlook_options are not valid for histograms, and > using the graph editor to alter the colour also results in both plots > becoming the same colour. * * 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/ * * 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/ * * 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**:

**References**:**st: re: Possible to have different colours for by() groups in histogram?***From:*Philip Jones <[email protected]>

**st: RE: re: Possible to have different colours for by() groups in histogram?***From:*"Nick Cox" <[email protected]>

**st: AW: RE: re: Possible to have different colours for by() groups in histogram?***From:*"Martin Weiss" <[email protected]>

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