Re: False image plot
- To: mathgroup at smc.vnet.net
- Subject: [mg58374] Re: False image plot
- From: Peter Pein <petsie at dordos.net>
- Date: Tue, 28 Jun 2005 21:57:05 -0400 (EDT)
- References: <d9r528$56u$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
tornado78 schrieb:
> Ok here is another one i need help on
>
> How do you get mathematica to take three lists of numbers, plot one as x, one as y and the third not as a 3rd dimension but as a color value of some sort for example blue for low values, red and yellow for high values of the third set of numbers
>
> thanks
>
Say you've got
In[1]:=
x = Range[100]/100;
y = 4*x*(1 - x);
z = Sin[2*Pi*x]/x;
I want to use Hue[] for the colour. So I have to normalize the z-values:
In[4]:=
col = (z - Min[z])/(Max[z] - Min[z]);
And plot it:
In[5]:=
Show[Graphics[{Hue[#3], Point[{#1, #2}]}]&[Sequence @@ #1]& /@
Transpose[{x, y, col}],
PlotLabel -> "Gravity's Rainbow", Background -> DarkSlateBlue];
--
Peter Pein
Berlin