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MathGroup Archive 2007

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Re: Vertical tick labels in BarChart

  • To: mathgroup at smc.vnet.net
  • Subject: [mg84038] Re: Vertical tick labels in BarChart
  • From: sdw <nospam.warwick at jps.net>
  • Date: Fri, 7 Dec 2007 03:09:03 -0500 (EST)
  • References: <fj8qal$jg5$1@smc.vnet.net>

ok - here you go....


(* create the bar chart with labels in the wrong orientation,  then 
convert the whole thing to primitives with FullGraphics to circumvent 
all of the graphics ticks bugs*)

b = BarChart[vals, BarLabels -> labels] // FullGraphics ;   

(* apply a transformation to all text primitives,  being careful to only 
modify the non-numeric ones since the numeric ones are the vertical axis 
text marks.
The transformation replaces the offending label with a rotated and 
translated version of the label. *)

b /. Text[ v_String, al_List, bl_List] ->  Translate[Rotate[Text[v, {0, 
0}, {-1, 0}], -\[Pi]/2, {0, 0}], al]


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John Jowett wrote:
> I would have thought this is a FAQ but it doesn't seem to be ...
>
> Consider the following construction of simple Bar Charts where the bar
> labels are strings.  The first one looks OK. In the second one, where
> there are more bars, it's a mess because all the labels overlap
> (unless the graphics is increased a lot in size):
>
> Needs["BarCharts`"]
>
> labels = {"MQM.A7L2B1", "MQMC.9R2.B1", "MQTLI.11R2.B1"};
> vals = {5, 6, 7};
>
> BarChart[vals, BarLabels -> labels]
>
> vals = Flatten[Table[vals, {5}]];
> labels = Flatten[Table[labels, {5}]];
>
> BarChart[vals, BarLabels -> labels]
>
> This could be neatly solved if the labels were oriented vertically
> instead of horizontally (it's easy to do this, e.g., in certain
> spreadsheet applications).  However I can't find any option that
> allows it.
> I suspect it might be possible using some special Ticks construction
> but haven't taken the time to see.   But this should be easy ... does
> anyone know how ?
>
> Thanks,
> John Jowett
>
>   


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