I'm looking for a way to create bar charts with nested groups levels. I have data that is seperated to this factors: 1. Day part - day/night. 2. Season - summer/winter. 3. habitat - Cover/Open I have created in Excel the following chart which I would like to create in R: http://www.nabble.com/file/p22180918/chart.jpg I have seen this nice post: http://onertipaday.blogspot.com/2007/05/make-many-barplot-into-one-plot.html. I can change it for my purposes but I want to be sure there are no simpler solutions. I think the function bargraph.CI() should handle "one-way or higher experimental designs" but I can't figure out how and there are no examples on higher than two-way designs plotting using bargraph.CI() what is the simplest way to create such bar graphs? Thank you, Ofir. -- View this message in context: http://www.nabble.com/creating-bar-charts-with-nested-groups-tp22180918p22180918.html Sent from the R help mailing list archive at Nabble.com.