INTERACTIVE DISPLAY SYSTEM OF RECURSIVE FORMULA

摘要

PROBLEM TO BE SOLVED: To display a necessary part in detail and to ignore and display an unnecessary part by dividing a rectangular area which is made a nest in accordance with a recursive structure of formula data, tracing a list structure of formula data and changing it to a set of rectangular areas according to a recursive procedure. ;SOLUTION: This system prepares a data structure that corresponds to a rectangular area, stores a calculated size, a pointer that points partial data which is included in the recursive structure of a formula showing its content and a pointer that points a data structure which corresponds to a rectangle in a rectangular table 2b, creates a rectangle in display memory 3 and shows it in a display part 4. A symbol that presents various elements in an area (rectangle) which is divided by a formula element display means 1b. Next, an eliminating means 1c compares the depth and term number of a nest with a threshold and the formula is eliminated and displayed. When an input part 5 instructs a symbol that shows elimination, a part eliminating part 1d operates and is expanded and a nest structure is relocated. When a polynomial rectangular area is selected by the part 5 and eliminating display is instructed, the same elimination with the means 1c is performed and the rectangular area is eliminated and displayed.;COPYRIGHT: (C)1998,JPO