A little bug!

[amir-keramatian]

Hi there,

I've noticed a bug in the file clustering.cpp. Line 68 is not correct: if(points[next].cluster != NOT_CLASSIFIED) continue;

Because those neighbours that are classified as noise are being overlooked. However, they should be clustered in cluster c because while a point might first be considered as noise, because it doesn't have enough points in its eps neighbourhood, it might later be found in the eps neighbourhood of a core point. Please see Line 11 in Algorithm 1 in the following paper:

@article{schubert2017dbscan, title={DBSCAN revisited, revisited: why and how you should (still) use DBSCAN}, author={Schubert, Erich and Sander, J{"o}rg and Ester, Martin and Kriegel, Hans Peter and Xu, Xiaowei}, journal={ACM Transactions on Database Systems (TODS)}, volume={42}, number={3}, pages={19}, year={2017}, publisher={ACM} }