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NAGtypes :: Point

Point -- a type used to store a point in complex space

Description

This type is used to store a solution to a polynomial system obtained by such fuctions as solveSystem (missing documentation), track (missing documentation). The following methods can be used to access a Point:
  • coordinates -- get the coordinates (returns a list)
  • status -- get the type of solution (e.g., Regular)
  • matrix -- get the coordinates (returns a matrix)
Possible types of Points (accessed by status):
  • Regular -- the jacobian of the polynomial system is regular at the point
  • Singular -- the jacobian of the polynomial system is (near)singular at the point
  • Infinity -- the solution path has been deemed divergent
  • MinStepFailure -- the tracker failed to stay above the minimal step increment threshold
Only coordinates are displayed (by net); to see the rest use peek.

Methods that use a point :

For the programmer

The object Point is a type, with ancestor classes MutableHashTable < HashTable < Thing.