I am using ELKI mini GUI for clustering my data points. I have some 1300 GPS data points which I would like to cluster my GPS points (DBSCAN and OPTICS). As an input file for dbc.in I am using a csv file with only 2 columns (X,Y). The problem is, my X,Y (in projected) coordinates are very precise upto 6 decimal places. But after running the cluster algo I am getting lower precision (upto 3 decimal places). How can I increase the precision of output points?
And also when it is generating the clusters, it is automatically invoking some virtual IDs which are not corresponding to my actual point IDs (ID, X, Y). However, ID is not given in the input csv. It comprises only two columns (X,Y).