> I would only like to display barrier/highway=gate point icons if they are part of a (best routable) line.

Since I try to declutter my maps as best as possible I too had "remove non-relevant gates" on my to do list and followed up on that today. Accounting for points mapped on or between ways and access restrictions optionally stemming from point and/or way I was able, to already thin out my gates significantly. The include file is just "re-used" from my lines processing.

   /# NoAccess gates on relevant highways//
   //# only works w/ mkgmap option --add-pois-to-lines//
   //if (mkgmap:from-node:barrier ~ '.*(gate)' & highway=*) then//
   //# gate on highway//
   //   include "../inc/RaceSurf"; //
   //   # tagging of (preselected) elements w/ hgh:surface=(Race|noRace)//
   //   # depending on quality in regard to race (and gravel) bike use//
   ////
   //  if (hgh:surface=Race) then //
   //       (mkgmap:from-node:access ~ 'no|private//
   //        & !(mkgmap:from-node:bicycle ~ 'yes|permissive')
            ...//)
   //      # relevant access restricted by point//
   //     |//
   //       (access ~ 'no|private' //
   //        & !(bicycle ~ 'yes|permissive')
            ...//)
   //     # relevant access restricted by road segment//
   //[...]//
   //end //
   //end/

But I was not able, to solve the probably most interesting situation:
If a (gate) point is part of two (or more) consecutive ways, it is processed multiple times from --add-pois-to-lines, but one would need the tags of all ways involved at the same time to make the final decision on whether or not to render this point. (That is -for starters-, if not at least two ways were deemed interesting, the gate might not be rendered although from one way alone, it would).

Is there a concept, allowing to do that?

The only idea I came up with would be, to use the mkgmap:line2poitype tag to flag these POIs somehow and finally delete all, if not at least 2 of those where placed at the exact same location. Somewhat similar to deleting identical POIs at the same location as documented for the nearby-poi-rules. In the latter case (>2), delete all but one...

Cheers, Felix
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