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BarChart3D Coloring Problem

• To: mathgroup at smc.vnet.net
• Subject: [mg105547] BarChart3D Coloring Problem
• From: Don <donabc at comcast.net>
• Date: Tue, 8 Dec 2009 06:44:15 -0500 (EST)

Given an array of random numbers (called Pct. Utilization)  in the
range 0 to 1.0 ,
and displayed using BarChart3D, is there a way to color the bars so
that the part
of any bar that is above a certain threshold (say 0.75)  is uniformly
in  one color (e.g. Green)?

For e..g , Below is an example of a typical Bar Chart of Pct.
Utilization

percents = Table[Random[], {5}, {10}];

BarChart3D[percents, ChartLayout -> "Grid",
  AxesLabel -> {Style["trPeriod", Bold, 14 ],
   Style["Traffic", Bold, 14], Style["Pct. Utilization", Bold, 14]}
  ]

Each bar above a threshold of 0.75 should have that portion of the bar
above 0.75 colored in Green.

Is there a way of doing this?

If not, there is a fall back position that would convey nearly as
much  information by
coloring all of a bar (from 0 to the top of the bar) that exceeded a
certain threshold entirely in one  color (again, e.g. Green)  for all
those bars that exceed 0.75.

Thank you in advance for any help you can give me.

Don

• Follow-Ups:
  • Re: BarChart3D Coloring Problem
    • From: Brett Champion <brettc@wolfram.com>