Results of the bivariate J-functions J(r)_{Xphotoall, Yfilall} (green), J(r)_{Xphotoall, Xfilperp} (blue), and J(r)_{Xphotoall, Xfilnotperp} (orange) in comparison with the theoretical reference case representing independence between the studied sets (black dashed line). The radian distance of 0.002 corresponds to 0.4 Mpc at the distance of 200 Mpc and 1.6 Mpc at the distance of 800 Mpc.