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From |
"Nick Cox" <[email protected]> |

To |
<[email protected]> |

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

Date |
Wed, 4 Nov 2009 12:48:51 -0000 |

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/

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