:orphan:
# PetscDTNodeType
A description of strategies for generating nodes (both quadrature nodes and nodes for Lagrange polynomials) 
## Synopsis
```
typedef enum {
  PETSCDTNODES_DEFAULT = -1,
  PETSCDTNODES_GAUSSJACOBI,
  PETSCDTNODES_EQUISPACED,
  PETSCDTNODES_TANHSINH
} PetscDTNodeType;
```

## Values

- ***`PETSCDTNODES_DEFAULT` -*** Nodes chosen by PETSc
- ***`PETSCDTNODES_GAUSSJACOBI` -*** Nodes at either Gauss-Jacobi or Gauss-Lobatto-Jacobi quadrature points
- ***`PETSCDTNODES_EQUISPACED` -*** Nodes equispaced either including the endpoints or excluding them
- ***`PETSCDTNODES_TANHSINH` -*** Nodes at Tanh-Sinh quadrature points





## Note
A `PetscDTNodeType` can be paired with a `PetscBool` to indicate whether
the nodes include endpoints or not, and in the case of `PETSCDT_GAUSSJACOBI`
with exponents for the weight function.


## See Also
 `PetscQuadrature`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/include/petscdt.h.html#PetscDTNodeType">include/petscdt.h</A>


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[Index of all DT routines](index.md)  
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