how to change default font size for graphviz?
Fontsize is a graph attribute (as well as an edge and node attribute). Doxygen generates a dot file, so, e.g.,:
strict digraph {
graph [ bgcolor=lightgray, resolution=128, fontname=Arial, fontcolor=blue,
fontsize=12 ];
node [ fontname=Arial, fontcolor=blue, fontsize=11];
edge [ fontname=Helvetica, fontcolor=red, fontsize=10 ];
}
Specific settings will override generic ones; hence setting fontsize as a node attribute will override the fontsize set as a graph attribute (just for nodes though), and setting fontsize for specific nodes will override fontsize set for all nodes.
If you try what i have above and it does not seem to work, change the fontsize, search your entire dot file for 'fontsize' settings, remove them, and re-set fontsize as a node attribute.
Here is the complete graphviz attribute list.
![chronodekar](https://i.stack.imgur.com/KRTNc.jpg?s=256&g=1)
chronodekar
Looking for work as a web developer in the Toronto area.
Updated on February 22, 2020Comments
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chronodekar over 4 years
I use doxygen + graphviz for documenting my code. graphviz does a nice job of generating images.
Is there any way to change the default fontsize for graphviz? The default is 14, but I want to use 12 instead.
Its a real pain to change the fontsize for individual elements like, nodes, subgraphs, edges ... etc.
UPDATE:
For reference here is the code I'm using in doxygen, (the text fields have been renamed, of course)
@dot strict digraph { node [shape = box, fontsize = 12]; subgraph cluster_main { fontsize = 12; shape = box; label = "main"; subgraph cluster_main_common { fontsize = 12; shape = box; label = "common"; subgraph cluster_main_common_source { fontsize = 12; shape = box; label = "source" subgraph cluster_file1 { fontsize = 12; shape = box; label = "file1.c"; gSystem [label = "var1" URL = "\ref var1"]; } subgraph cluster_file2 { fontsize = 12; shape = box; label = "file2.c"; gCard [label = "var2" URL = "\ref var2"]; } subgraph cluster_file3 { fontsize = 12; shape = box; label = "file3.c"; gPwrSupply [label = "var3" URL = "\ref var3"]; } } } subgraph cluster_main_docs { fontsize = 12; shape = box; label = "docs"; subgraph cluster_main_docs_features { fontsize = 12; shape = box; label = "features"; subgraph cluster_main_docs_features_source { fontsize = 12; shape = box; label = "source" subgraph cluster_file4 { fontsize = 12; shape = box; label = "file4.c"; deviceInfo [label = "var4" URL = "\ref var4"]; } } } } } } @enddot
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chronodekar over 14 yearsIt's been a while since I looked into this, and I think I gave up in the end. Nevertheless, your update looks workable and for lack of anything better I'm marking this as the answer.
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Josh Petitt over 11 yearstry putting double quotes around the font name? This worked for me.
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user2023370 over 8 yearsI was using
labelfontcolor
described on the graphviz page, with no luck.fontcolor
works fine though, thanks.