MathGroup Archive 2007

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ColorData etc.

  • To: mathgroup at smc.vnet.net
  • Subject: [mg82245] ColorData etc.
  • From: P_ter <peter_van_summeren at yahoo.co.uk>
  • Date: Tue, 16 Oct 2007 03:25:36 -0400 (EDT)

Hello,
I am not clear how ColorData etc. works.
Now I color an interval according to its integer length.
I would like to make a legend for that.
No idea how to do that.
My format of each element of a list is: Hue[(55-53)/max], Line[{{53, 4}, {55, 4}}]
In this case max = 5 for the whole list.
It means that a horizontal line is drawn with Hue[2/5] from {53,4} to {55,4}
I would like to make a legend of the colors. There are in this case only 5 colors. Hue[1] corresponds to 5, Hue[4/5] corresponds to 4 etc.
The examples in the documentation do not help me. I am sorry to say that because there are many examples. 
My general question is that I would like to place at each line the length of that line as a number, just above it.
Or by clicking on the line, getting such a number.
I am lost at this. Can anyone help here? Maybe there is no need for the explicit Hue in this case and all could be done with just a list of Lines. No idea.
But all the examples in the documentation do not fit to my problem. I apologize for my question: I am not clear how ColorData etc. works.
with friendly greetings,
P_ter


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