# Axisymmetric Coordinates

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- MOOSE supports axisymetric coordinates
    * i.e., cylindrical coordinates ($$r$$, $$\theta$$, $$z$$), where the problem is symmetrical in the $$\theta$$ direction.
- The axis of rotation is controlled using:
```text
[Problem]
  type = FEProblem
  coord_type = RZ
  rz_coord_axis = X
[]
```

- MOOSE assumes the problem is symmetrical about specified axis
and automatically applies the proper coordinate transformation

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[Cylindrical Coordinates](http://en.wikipedia.org/wiki/Cylindrical_coordinate_system)

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# Spherical Coordinates

- MOOSE supports symmetrical spherical coordinates
    * i.e, spherical coordinates $$(r, \theta, \phi)$$, where the problem is symmetrical in the $$\theta$$ and $$\phi$$ directions.
- Enable spherical coordinates using the following input file syntax
```text
[Problem]
  type = FEProblem
  coord_type = RSpherical
[]
```