PointConstraint

Specify local equality or bound constraints at one or more points.

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Declaration

classdef PointConstraint

Overview

Use PointConstraint to declare values or derivative conditions at specific points in one or more dimensions. A single constraint object can represent many points at once, which makes it suitable for both simple one-dimensional constraints and large masked regions in tensor fits.

Basic usage

c1 = PointConstraint.equal((0:10)', D=2, value=0);
c2 = PointConstraint.lowerBound([X(mask), Y(mask)], D=[0 0], value=0);
c3 = PointConstraint.equalOnMask({x,y}, islandMask, D=[0 0], value=0);

Topics

• Specify point constraints
  • PointConstraint Create a pointwise equality or bound constraint.
  • equal Create a pointwise equality constraint.
  • equalOnMask Create a pointwise equality constraint from a logical mask.
  • lowerBound Create a pointwise lower-bound constraint.
  • lowerBoundOnMask Create a pointwise lower-bound constraint from a logical mask.
  • upperBound Create a pointwise upper-bound constraint.
  • upperBoundOnMask Create a pointwise upper-bound constraint from a logical mask.
• Inspect point constraint properties
  • D Derivative orders as an N-by-D matrix.
  • numConstraints Number of constrained points.
  • numDimensions Number of constrained dimensions.
  • points Constraint locations as an N-by-D point matrix.
  • relation Constraint relation: “==”, “>=”, or “<=”.
  • value Target values as an N-by-1 vector.

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