Change color of 2D plot line depending on 3rd value

Question

I have a data set that looks like this

 140400 70.7850 1
 140401 70.7923 2
 140402 70.7993 3
 140403 70.8067 4
 140404 70.8139 5
 140405 70.8212 3
         


        

Answer 1

Do you have Matlab R2014b or higher?

Then you could use some undocumented features introduced by Yair Altman:

n = 100;
x = linspace(-10,10,n); y = x.^2;
p = plot(x,y,'r', 'LineWidth',5);

%// modified jet-colormap
cd = [uint8(jet(n)*255) uint8(ones(n,1))].' %'

drawnow
set(p.Edge, 'ColorBinding','interpolated', 'ColorData',cd)