`mesh(z)`

`Mesh(x,y,z)`

Inputs | |

`z` |
An `mXn` matrix of the function values to plot. |

`x` |
Either a vector of length `n` or a matrix of size `mXn` . |

`y` |
Either a vector of length `m` or a matrix of size `mXn` . |

The inputs

`x`

and `y`

should either be both vectors, or matrices of the
indicated size. In the former case, the function is assumed to be
of the form `z[i,j]=f(x[j], y[i])`

. Otherwise, the functional form `z[i,j]=f(x[i,j],y[i,j])`

is assumed.
The mesh plot is drawn as a set of lines enclosing each of the regions bounded by the four points

`(x[i,j], y[i,j], z[i,j])`

,
`(x[i+1,j], y[i+1,j], z[i+1,j])`

,
`(x[i+1,j+1], y[i+1,j+1], z[i+1,j+1])`

and
`(x[i,j+1], y[i,j+1], z[i,j+1])`

.
The color of the lines is determined by the average value of

`z`

along each
of the line segments.
In addition to the mesh lines, a contour of the surface is also displayed on the x-y plane.