Patent
1995-05-23
1996-09-17
Nguyen, Phu K.
G06F 1500
Patent
active
055577180
ABSTRACT:
In the information processing apparatus having a function of displaying a plurality of graphs, when information on mathematical expressions for drawing a plurality of graphs and information on scales on a plurality of axes associated with the graphs is input from an input portion, a drawing data conversion portion converts the information on a plurality of expressions into graph drawing data for drawing a plurality of graphs and converts the information on scales on a plurality of axes into axes drawing data to be used for graduating axes for respective graphs. A graph drawing portion draws a plurality of graphs such that they overlap each other about a common axis based on the graph drawing data and axes drawing data obtained as a result of the conversion and draws axes having different scales for respective graphs on the same screen of a display portion. An arrangement may be provided to draw a trace pointer on a graph to be traced and an axis pointer on the axis for the graph when the graph to be traced is specified. This makes it possible to clearly display transitions of values on a graph from among graphs having different ranges displayed on the same screen for clear readability.
REFERENCES:
patent: 4809189 (1989-02-01), Batson
patent: 5371842 (1994-12-01), Easton et al.
patent: 5485564 (1996-01-01), Miura
Satoh Akiyoshi
Tsuneyoshi Katsumasa
Nguyen Phu K.
Sharp Kabushiki Kaisha
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