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Re: Styling single bar in BarChart

  • To: mathgroup at smc.vnet.net
  • Subject: [mg110057] Re: Styling single bar in BarChart
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Sun, 30 May 2010 23:47:30 -0400 (EDT)

populations =
  Table[RandomInteger[{100, 200}], {20}];

Highlight position 19

mbar = BarChart[populations,
  Axes -> None,
  ChartStyle -> ReplacePart[
    Table[LightGray,
     {Length[populations]}],
    19 -> Red],
  BarSpacing -> Large]

Highlight Max

mbar = BarChart[populations,
  Axes -> None,
  ChartStyle -> ReplacePart[
    Table[LightGray,
     {Length[populations]}],
    Thread[
     Position[populations,
       Max[populations]] ->
      Red]],
  BarSpacing -> Large]

Highlight Max and Min

mbar = BarChart[populations,
  Axes -> None,
  ChartStyle -> ReplacePart[
    Table[LightGray,
     {Length[populations]}],
    Join[
     Thread[
      Position[populations,
        Max[populations]] ->
       Red],
     Thread[
      Position[populations,
        Min[populations]] ->
       Blue]]],
  BarSpacing -> Large]


Bob Hanlon

---- dartar <dario.taraborelli at gmail.com> wrote: 

=============
I must be missing something trivial but I don't seem to be able to
find a way to highlight a single value from a list in a BarChart.

mbar = BarChart[{populations, populations[[19]]}, Axes -> None,
ChartStyle -> {White, Black}, BarSpacing -> Large];

The above generates a bar chart of the population series with
alternate black/white colour.

mbar = BarChart[{populations, Style[populations[[19]], Red]},  Axes ->
None, ChartStyle -> White, BarSpacing -> Large]

This produces only white bars.

Feedback welcome.

Dario




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