<br><br><div><span class="gmail_quote"></span>Hi Heike,I think vtkPointLocator´s FindPointsWithinRadius() method does what you
are looking for. <br>
It doesn´t return a predefined number of points but
all the points (points´ Ids, actually), within a given radius.<br>
Hope this helps<br>
<br>
Luca</div><br>