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Possible bug in Mathematica 7 using ColorFunction

• To: mathgroup at smc.vnet.net
• Subject: [mg101112] Possible bug in Mathematica 7 using ColorFunction
• From: Jeff Lawlis <jlawlis at allendalecolumbia.org>
• Date: Wed, 24 Jun 2009 06:33:36 -0400 (EDT)

Problem:  use of ColorFunction affects spacing of Greek characters in Frame label.  

Here is a simple example of the problem:

SetOptions[Plot, Frame -> True, FrameLabel -> "Wavelength (\[Mu]m)"]
Plot[y = x, {x, 1, 1000}, 
 ColorFunction -> (ColorData["VisibleSpectrum"][#] &), 
 ColorFunctionScaling -> False, Filling -> Axis]

Notice the space between the Greek character \[Mu] and the m, causing the m to overlap the right parantheses.  The space disappears if you remove the ColorFunction gradient from the plot parameters.  Also, if you change \[Mu] to a standard character like m, the formatting looks perfectly acceptable.  To be honest, I don't really understand the reason for the [#] & following the ColorData tag, but the gradient doesn't seem to work properly without it.  Is my syntax correct?

• Follow-Ups:
  • Re: Possible bug in Mathematica 7 using ColorFunction
    • From: peter <plindsay.0@gmail.com>