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Change font size of node name in a graph

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Hello,
Is there any one knows how to change the font size of node name in a graph, please!
I see that we can change many graphical characteristics by using the option 'Edit', but I can not find any option to change the font size of node names.
Could you help me, please!
Thanks,
Khuyen

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Accepted Answer

Josh Meyer
Josh Meyer on 20 Mar 2019
Several new properties were added to GraphPlot objects in R2018b to enable customization of node and edge labels. In particular you can change the font size with the NodeFontSize and EdgeFontSize properties.
A list of all the properties is here: GraphPlot Properties
Example:
G = graph([1 1 1 1 5 5 5 5],[2 3 4 5 6 7 8 9]);
h = plot(G,'NodeLabel',{'A','B','C','D','E','F','G','H','I'});
h.NodeFontSize = 14;

  3 Comments

Le Thi Khuyen
Le Thi Khuyen on 20 Mar 2019
Thanks for your answer. Unfortunately I can not do this for Matlab version R2018a. :-(
Josh Meyer
Josh Meyer on 20 Mar 2019
Correct, in R2018a you can't use the new properties.
One workaround for older releases would be to use a text object to add labels to the plot, since text objects allow you to customize the text with NV pairs. The XData and YData properties of the GraphPlot object have the x,y coordinates of the nodes.
G = graph([1 1 1 1 5 5 5 5],[2 3 4 5 6 7 8 9]);
h = plot(G,'NodeLabel',{});
t = text(h.XData,h.YData,{'A','B','C','D','E','F','G','H','I'},'FontSize',14)
Le Thi Khuyen
Le Thi Khuyen on 20 Mar 2019
It works very well. Thank you so much!

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