highlight Nodecolor for a graph using a color map (JET)

Hi,

I have plotted a graph with n nodes.

Each node has an "attribute" or a value from -1 to 1 stored in a vector K.

I would like to color the nodes using these attributes so for example if node 1 has attribute value "-1" then with the "JET" colormap on Matlab it would appear in Blue.

Is there a way to achieve this ?

I tried the following but clearly it doesn't work (returns error, it's wrong):

jetcustom=jet(n); 
r1=K(1,:); %list of attributes
colors = interp1(linspace(-1, 1, n), jetcustom, r1.');

figure()

a=graph(A);
p=plot(a,'Layout','force');

for i=1:n
    highlight(p,i , 'NodeColor', colors(i));
end

Answer 1

[Christine Tobler]

Since colors is a n-by-3 array, use colors(i, :) to access the complete row that represents the color for node i. You can also use

p=plot(a,'Layout','force','NodeColor',colors)

instead of the for-loop with highlight, or you could try to have MATLAB's colormap work in the background without explicitly setting the colors:

p=plot(a,'Layout','force','NodeCData',r1);
colorbar
colormap jet

[Sha]

thanks! worked perfectley!