PL/R support

[walkingsparrow]

Implement plr.map, plr.reduce, plr.filter, plr.flatmap functions, which utilize PL/R to create functions directly in Postgres databases.

Using these functions as the basis for building more complicated algorithms.

[walkingsparrow]

Work underway in the branch plr

[wjjung317]

It would be great if the interface was similar to R's apply() family of functions

[haltux]

Hello,

Is plr support still planned? plr branch has not been updated for two years and not merged into master.

Regards,

[fmcquillan99]

We are interested in it. @wjjung317 asked about it recently as well. So it is on the roadmap but I don't have a timeline on when it will be done.