How to add a new graph with keeping the old one plotted?

I have a 14-node graph with a connectivity matrix A:

A= [ 0 -1 0 0 -1 0 0 0 0 0 0 0 0 0; -1 0 -1 -1 -1 0 0 0 0 0 0 0 0 0; 0 -1 0 -1 0 0 0 0 0 0 0 0 0 0; 0 -1 -1 0 -1 0 -1 0 -1 0 0 0 0 0; -1 -1 0 -1 0 -1 0 0 0 0 0 0 0 0; 0 0 0 0 -1 0 0 0 0 0 -1 -1 -1 0; 0 0 0 -1 0 0 0 -1 -1 0 0 0 0 0; 0 0 0 0 0 0 -1 0 0 0 0 0 0 0; 0 0 0 -1 0 0 -1 0 0 -1 0 0 0 -1; 0 0 0 0 0 0 0 0 -1 0 -1 0 0 0; 0 0 0 0 0 -1 0 0 0 -1 0 0 0 0; 0 0 0 0 0 -1 0 0 0 0 0 0 -1 0; 0 0 0 0 0 -1 0 0 0 0 0 -1 0 -1; 0 0 0 0 0 0 0 0 -1 0 0 0 -1 0;]

I have plotted it using the code:

>> G = graph(A~=0);

>> h=plot(G,'NodeColor','red','MarkerSize',15);

I want also to plot some certain nodes (only nodes without lines) with different color and smaller size so that I can see both, let's say B is the vector that contains the node locations to be plotted:

B = [5 10]

This is the code I used it:

>> highlight(h, B,'NodeColor','y','MarkerSize',10);

However, it erases the previous corresponding nodes plotted in A. Any idea so that I can keep both plotted, the red and yellow at nodes 5 & 10? Thanks in advance

Answer 1

[Walter Roberson]

You can extract h.XData and h.YData and index into those to get the X and Y locations of the points you want to highly. Then you can scatter() to those locations.

[Ismaeel]

This is very cool, thank you so much Walter...