Change font size of node name in a graph

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

Answer 1

[Josh Meyer]

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;

[Le Thi Khuyen]

Thanks for your answer. Unfortunately I can not do this for Matlab version R2018a. :-(

[Josh Meyer]

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]

It works very well. Thank you so much!

[Souarv De]

This is not available in R2018a.