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Deleting points close to specific groups

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I have a question regarding deleting points based of the proximity of specific groups. 

In the picture below there are two curves, group 1, group 2. The points marked red(group 2) are the points I want to remove by proximity to the group 1's points. Group is the curve in the middle going upwards.

How would I do this? 

Thanks !


Edited by hampuseh

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//set your wranglenode to run over group2
int nearpt = nearpoint(0,"group1",@P,chf("radius"));
if(nearpt != -1){


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