Plotting tool: plot custom topics

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Hello there,

I am using Gazebo 9 and I am trying to plot data from custom protobuf message topics of custom plugins. The topics are actually identified on the plotting GUI but I can select any field from them and pull them to be plotted.

Note: the plugins are using Gazebo Transport, where the published topics are published by Gazebo Transport Publishers. I have tried to do the same using Ignition Transport, but with no luck (the Ignition topics don't even show up on the plotting GUI of Gazebo 9).

So is there a way of solving this?

Thanks in advance!