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Table 1 Comparison between Viraph’s and depthMapX’s calculation

From: Viraph: exploring the potentials of visibility graphs and their analysis

Item depthMapX Viraph (A) Viraph (C)
Grid resolution (k) 2150 2099 2099
Unit size (AutoCAD units) 40 40.7 40.7
Average unit point diff. (δ) - 42% 42%
Convex spaces - 27 27
Border end points - 70 38
E-lines - 1356 468
Average absolute difference - 0.045 turn (4.0°) 0.025 turn (2.2°)
Average relative difference - 6.6% 3.6%
Percentage of +5% differing results - 64% 22%
Percentage of +10% differing results - 14.8% 3.5%
Ranking difference (%) - 2.3% (50 ranks) 2.5% (55 ranks)
Calculation duration 28:10 min 7:42 min (×3.6 faster) 1:32 min (×18 faster)
Memory used 72 MB 273 MB 230 MB