Each panel shows area of NGC 6334 observed with ALMA (see Fig. 1) and coloured circles correspond to the ALMA continuum sources detected in region (see Table A.1). Each panel correspond to one of theseven clustering algorithms used to identify clusters in the region (see Sect. 4.1). The colours of the circles depict the different clusters to which each continuum source belongs according to each algorithm. The last panel showsthe final association of each source with one of the four clusters: light blue for NGC 6334-I(NW), lime for NGC 6334-I(N), violet for NGC 6334-E and orange for NGC 6334-I. The black circles in the last panel correspond to the sources not assigned to any cluster. In all panels, the rectangles mark the position of the relevant regions also marked in Fig. 1.