How can I control node label font size of a graph or digraph object?

16 次查看（过去 30 天）
Jakob Nikolas
Jakob Nikolas 2016-2-8
回答： Ahmed Khamis 2023-9-21
I want to plot a graph or digraph (R2015b). Unfortunately, the node labels are barely legible because the font size is too small.
How can I change the font size of the node labels?
My example code is from the Matlab documentation:
s = {'a' 'a' 'a' 'b' 'b' 'c' 'd' 'd' 'd'};
t = {'b' 'c' 'd' 'd' 'a' 'b' 'c' 'a' 'b'};
G = digraph(s,t);
labels = {'a/3' 'a/3' 'a/3' 'b/2' 'b/2' 'c' 'd/3' 'd/3' 'd/3'};
p = plot(G,'Layout','layered','EdgeLabel',labels);
highlight(p,[1 1 1],[2 3 4],'EdgeColor','g')
highlight(p,[2 2],[1 4],'EdgeColor','r')
highlight(p,3,2,'EdgeColor','m')
title('Page Rank Score Transfer Between Nodes')
I would expect p to have a property "NodeLabelFontSize" (or similar), but there is no property to control label appearance.
% get properties of p
get(p)
  4 个评论
显示 2更早的评论
Paul Fishback
Paul Fishback 2018-7-3
I'm curious to know how this could be modified to change the font size of the edge labels. Using a symmetric matrix A corresponding to a weighted, undirected network, I have
G=graph(A);
plot(G,'EdgeLabel',G.Edges.Weight)

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回答（4 个）

Shruti Sapre
Shruti Sapre 2016-2-10
Hi Jakob,
I looked into this and it appears that there currently isn't a way to change the font size of the labels of a graph.
-SHruti
Steven Lord
Steven Lord 2019-10-22
You can customize node and edge labels with font properties, including NodeFontSize and EdgeFontSize, as of release R2018b.
Colin Smith
Colin Smith 2017-8-23
any word on this? not only is it crazy that the graph label size can't be changed, but the default size is tiny!
Ahmed Khamis
Ahmed Khamis 2023-9-21
Ran in:
>>
s = [1 1 1 2 2 3 3 4 5 5 6 7 7 8 8 9 10 11];
t = [2 3 10 4 12 4 5 6 6 7 9 8 10 9 11 12 11 12];
G = digraph(s,t)
G =
digraph with properties: Edges: [18×1 table] Nodes: [12×0 table]
plot(G,'Layout','force','EdgeColor',"#0072BD",'NodeColor', "#D95319",'NodeFontSize',15,'NodeFontWeight','bold')

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