A graph editor for large trees with browsing and zooming capabilities
Toshio Matsuura, Kenichi Taniguchi, Sumio Masuda, Tohru Nakamura · Systems and Computers in Japan · 1993
Abstract A library program is developed which makes it easy for users to observe a whole tree and some specified parts of the tree simultaneously, and also facilitates the input of commands for the tree by allowing direct manipulation on the display. This capability should be useful in a variety of application programs. By measuring the update time of large tree structures, the calculation of the layout algorithm, and the update time of the display, it is shown that VTM is usable in practice for large trees.