Problem with the find_cluster function

[joachimpoutaraud]

I have found a problem related to the find_cluster function. When finding the cluster for each categories separately, the function test if the number of ROIs is higher than 2 and if not it converts all the dataframe columns to noise:

  if len(df_single_categories) < 3:
      df_cluster["cluster_number"] = -1 # noise
      df_cluster["auto_label"] = 0 # noise

This is problematic as it converts all the dataframe to noise even if some categories were containing more than 3 ROIs before. Consequently, it is needed to modify the lines 304 and 305 with the following lines of code:

  if len(df_single_categories) < 3:
      df_cluster.loc[df_cluster["categories"] == categories, "cluster_number"] = int(-1) # noise
      df_cluster.loc[df_cluster["categories"] == categories, "auto_label"] = int(0) # noise