Multi-variable operations

Details Multi-variable operations Multi-variable operations

2007-06-12

2007-06-12

Jankus, Almis R. (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Graph generating

Reexamination Certificate

active

10515409

ABSTRACT:
Operation of a multi-variable drilling-rig is carried out within an envelope defined by convex hulls (TC,BC) that are derived from sets of historical values for the variables accumulated in a store (3) from previous operations. A display unit (5) shows the real-time values (Q01–Q10) of the variables on parallel axes (X01–X10) together with upper and lower limits (Up01–Up10, Lp01–Lp10) of the viable ranges for each variable to remain within the envelope, taking into account the current value of each other variable. The adjustment of the value of a variable (Q03) required to correct for a variable (Q08) found to be outside its viable range, is determined tentatively before implementation, by adjusting that value in the display to bring about re-calculation and display of the changes in viable ranges that would result from such adjustment.

REFERENCES:
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patent: 2378527 (2003-02-01), None
patent: WO 01/38831 (2001-05-01), None
Inselberg et al., “Parallel coordinates: survey of recent results”, 1993, SPIE vol. 1913, pp. 582-599.

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