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Fig. 1.

image

Top: 100 × 100 cMpc part of a slice centred at z = 0.42 in the mock data. The background distribution logδ is the logarithm of the DTFE obtained from the galaxy distribution in the slice (with photo-zs). Red circles show the positions of halos in the lightcone with redshifts 0.41 <  z <  0.43. The radius of the circle is equal to 2 × R200 for display purposes. Panel a: black lines are the 3D projected skeleton. Panel b: green lines are the 2D skeleton. Bottom: distribution of the distances between skeletons. The distance from the 2D skeleton to the 3D (projected) skeleton is shown in yellow. The distance from the 3D (projected) skeleton to the 2D skeleton is shown in blue. Top panel: PDF and bottom panel: CDF. The vertical lines and associated error bars in the top panel are the median and error on the median of each distribution.

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