Trim a TCX file from Garmin

TrimTCX.ps1

$InPath = "c:\activity.tcx"
$OutPath = "c:\activity_trimmed.tcx"
$x = [xml](get-content $InPath)

$x.TrainingCenterDatabase.activities.Activity | %{
  $Activity = $_
  $Activity.lap | %{
    $Lap = $_
    $lap.track | %{
      $Track = $_
      $Track.TrackPoint | ?{[datetime]$_.Time -gt [datetime]"2017-05-18T02:26:34.000Z"} | %{
        $Track.RemoveChild($_)
      }
    }
    if($lap.track.ChildNodes.Count -eq 0) {
      $Activity.RemoveChild($Lap)
    }
  }
}
$x.save($OutPath)