From VikingWiki

Viking needs a way to deal with many waypoints / trackpoints / tracks at once.

Ways of selecting

• Drawing a box
• Drawing some other kind of a polygon (or using a track)
• All waypoints a certain distance from a track

GPSBabel has the ability to filter waypoints using a track, such as the last two possibilities. We could either use GPSbabel as a backend or just adopt their code (probably better)

Actions

What would we want to do once we've selected many waypoints and/or trackpoints and/or tracks?

• Delete them
• Move them all over "by the same amount" (whatever that means on a round earth)
  • Perhaps different options for what "by the same amount" means
• Connect a bunch of waypoints into a track using some "shortest-distance" algorithm