# Plot a FEM object

### Description

Three-dimensional plot of a `FEM`

object, generated by `FEM`

or returned by `smooth.FEM.basis`

, `smooth.FEM.PDE.basis`

or
`smooth.FEM.PDE.sv.basis`

.

### Usage

1 2 |

### Arguments

`x` |
A |

`num_refinements` |
A natural number specifying how many bisections should by applied to each triangular element for plotting purposes. This functionality is useful where a discretization with 2nd order Finite Element is applied. |

`...` |
Arguments representing graphical options to be passed to plot3d. |

### See Also

`image.FEM`

### Examples

1 2 3 4 5 6 7 8 9 | ```
## Upload a triangular mesh and plot it
data("mesh.2D.rectangular")
plot(mesh.2D.rectangular)
## Create a linear Finite Element basis
FEMbasis = create.FEM.basis(mesh.2D.rectangular)
## Define a sinusoidal function as expansion of this basis and plot it
coeff <- sin(mesh.2D.rectangular$nodes[,1])*cos(mesh.2D.rectangular$nodes[,2])
FEM_object<- FEM(coeff, FEMbasis)
plot(FEM_object)
``` |

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