Re: ChartLabels for Stacked, Grouped BarCharts?
- To: mathgroup at smc.vnet.net
- Subject: [mg105838] Re: [mg105816] ChartLabels for Stacked, Grouped BarCharts?
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Mon, 21 Dec 2009 03:31:33 -0500 (EST)
- Reply-to: hanlonr at cox.net
tab2 = {{"a", 1, 4, 2}, {"b", 3, 5, 1}, {"c", 3, 2, 4}};
labs2 = First /@ tab2;
data2 = Rest /@ tab2;
GraphicsRow[
BarChart[data2,
ChartLayout -> #,
ChartLabels ->
{Placed[labs2, Axis],
None}] & /@
{"Stacked", "Grouped"},
ImageSize -> 500]
Bob Hanlon
---- Gordon Robertson <grobertson at bcgsc.ca> wrote:
=============
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