"possible licenses for RM-plugins?"
we've created a R-plugin for RM. It implements generic operators for data-transformation and plotting, and a Open-in-R operator for rapid R-prototyping. It nicely integrats into the result-view model of RM, and is better compared to the R integration in Knime as it dynamically adapts figures to their panel-sizes. We would like to make this plugin available to the RM-community asap.
We're currently trying to figure out an appropriate os-license model for it. What plugin-licenses are compatible with the RM-license model? Could we use BSD (or something similarly business friendly) or do we need to use GPL? Or would we need to use gnu-affero as RM does? What are the diffs between gpl and gnu-affero? Even if we don't want to do it: Would it be possible to sell closed-sourced plugins for RM?
BTW, we created a very similar plugin for for Matlab too, and this is also likely to be open-sourced in the same manner.