TaoAppSetColoring

Set the matrix coloring to be used when computing the Hessian by finite differences.

Synopsis

#include "tao.h"  
int TaoAppSetColoring(TAO_APPLICATION taoapp, ISColoring coloring)

Collective on TAO_APPLICATION

Input Parameters

	app	- the TAO_APPLICATION context
	coloring	- the coloring to be used

Note

The gradient evaluation must be set using the routine TaoSetPetscGradient().

.keywords: TAO_APPLICATION, finite differences, Hessian, coloring, sparse

See Also

TaoAppSetHessianRoutine(), TaoAppDefaultComputeHessianColor(),
TaoAppSetGradientRoutine()

Level:intermediate
Location:src/petsctao/application/petscapp/fdiff.c
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Examples

src/unconstrained/examples/tutorials/minsurf2.c.html