ChartLabels for Stacked, Grouped BarCharts?
- To: mathgroup at smc.vnet.net
- Subject: [mg105816] ChartLabels for Stacked, Grouped BarCharts?
- From: Gordon Robertson <grobertson at bcgsc.ca>
- Date: Sun, 20 Dec 2009 06:54:38 -0500 (EST)
Could I ask for help with ChartLabels for Stacked and Grouped BarCharts in Mathematica 7? I've checked the MathGroup archives and Mathematica help docs. I need to assess Stacked and Grouped BarCharts for a 2D dataset that consists of 20 groups of three values. Labels for the groups are {31,32,...,50}. From the help docs, it's easy to display the bars in either mode for simple baseline cases. But I don't see how to put a *single* label or tick *per stack or group*, below the X-axis. The following simulates the 2D dataset that will be read in from a file: tab2 = {{"a",1,2,3},{"b",2,3,4},{"c",3,4,5}} labs2 = tab2[[All,1]] data2 = tab2[[All,2;;4]] I need "Stacked" and "Grouped" BarCharts that have "a","b" and "c", respectively, as the labels for the three bar stacks or groups, below the X-axis. The following commands do not give this: BarChart[data2,ChartLayout->"Stacked",ChartLabels->Placed[labs2,Below]] BarChart[data2,ChartLayout->"Grouped",ChartLabels->Placed[labs2,Below]] The "Stacked" graph has a vertical stack of "a" "b" and "c" below the lower edges of *each* block in *each* bar/block stack; the "Grouped" graph has a label beneath *each* bar. Likely this makes sense in terms of general 'list ' rules, but it does not deliver what I need. I've tried expanding the label list and using a list that includes None for the second argument of Placed[], but have not quickly found a solution. I can guess that Ticks may be the approach to use, but wonder if I could as k more experienced folks for help. Could I also ask WRI to implement (or document) these BarChart use cases. Thanks in advance for your help in this. Gordon -- Gordon Robertson BC Cancer Agency Genome Sciences Centre Vancouver BC Canada www.bcgsc.ca 604-707-5800 x675416
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