> I want to make a histogram in R of the data in attached excel file called
> 'cbt'. However, I need the histogram to show a separation for Group 1 and
> Group 2, as in attached image.
>
> How do I do this in R? I know how to make a histogram for a single group,
> but how can I separate the 2 group
Nameless,
http://had.co.nz/ggplot2/geom_histogram.html has a few examples
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature and
Forest
team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
Kliniekstraat 25
1070 Anderlecht
Belgium
thierry.
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