Fig. 4From: A novel metric to measure spatio-temporal proximity: a case study analyzing children’s social network in schoolyardsThe heatmap of Schoolyard dataset for two playgroups: comparing the correlation coefficients matrix of geodesic proximity, temporal proximity, and spatio-temporal proximity among children in playgroup PG-1 and PG-2 (x.code = group id (A, B, or C). Child identifier code). The playgroup consists of several groups (A, B, and C) divided by green linesBack to article page