/[gzz]/manuscripts/FilletArt/filletart.rst
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revision 1.5 by tjl, Sat May 10 19:19:28 2003 UTC revision 1.6 by tjl, Sat May 10 19:25:48 2003 UTC
# Line 70  grouping of visual elements, in this cas Line 70  grouping of visual elements, in this cas
70  grouping of the node and the connection.  grouping of the node and the connection.
71    
72  The only disruptions in a fillet graph will be when the connections cross  The only disruptions in a fillet graph will be when the connections cross
73  each other. Line crossing is one serious factor making it hard to read  each other.
74  complex node-link graphs. With fillets, tracing a connection is  This makes a complex filleted graph is far easier to read than a box-line
75    graph, because in box-line graphs disruptions occur not only at line crossings
76    but also where the lines connect to the boxes, making the two situations
77    hard to distinguish.
78    With fillets, tracing a connection is
79  perceptually easy even if it crosses with other connections.  perceptually easy even if it crosses with other connections.
80    
81  We tested the easiness of perceiving fillets in a controlled laboratory  We tested the ease of perceiving fillets in a controlled laboratory
82  experiment with ten naïve participants. Eight different graphs were  experiment with ten naïve participants. Eight different graphs were
83  tested, of which one was implemented with "perfect" fillets. The other  tested, of which one was implemented with "perfect" fillets. The other
84  seven graphs were "incomplete" fillets or different common node-link  seven graphs were "incomplete" fillets or different common node-link

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