Provide an example graph

[fenollp]

I was trying to compare your project to https://github.com/clanchun/ecg
But this one doesn't have an example DOT (usable with http://viz-js.com/) or SVG or PNG file.

It builds fine though but this command just prints help:

./grapherl -a grapherl . grapherl.dot

[eproxus]

Hi! Are you asking for an example of how to use the command line script, or do you want to see an example image generated from grapherl?

[eproxus]

The correct command line would be ./grapherl -a . grapherl.png since -a doesn't take any arguments, it just defines what should be graphed (module graph or application graph). However, this produces an empty graph since it's only one application (needs to be fixed). To get the module graph the following should work:

$ ./grapherl -m . grapherl.png

This will produce:

When used with -a to get an application graph the SOURCE path should be a lib directory of a release or a build (for example, a _build/default/lib folder in a Rebar 3 project). When used with -m to get a module graph it should be an ebin folder (for example, _build/default/lib/myproject in a Rebar 3 project).

[eproxus]

Also, there's the undocumented include_otp Erlang option which gives this when running on OTP 21.3:

;-)

I started a 2.0 branch where this option is added to the command line.

[fenollp]

Nice! I'll check it out maybe even make a rebar3_graph plugin ;)