Graphviz: change font for the whole graph?

Question

I am wondering if I can define an alternative font for the whole graph.

...
digraph script_concept {
graph [layout=\"dot\",fontname=\"helvetica\"];
...
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Answer 1

However, there's one easy trick, if you are exporting svgs:

sed 's/Times,serif/Helvetica/g' thegraph.svg > thegraph_helvetica.svg

combine this with Make and all the horror will be hidden :) here's an example Makefile:

all: helvetica

svg:
    cat thegraph.dot | dot -Tsvg > thegraph.svg
helvetica: svg
    sed 's/Times,serif/Helvetica/g' thegraph.svg > thegraph_helvetica.svg