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Plot a contour graph under mesh graph

`meshc(X,Y,Z)`

meshc(Z)

meshc(...,C)

meshc(axes_handles,...)

h = meshc(...)

`meshc(X,Y,Z)`

draws a wireframe
mesh and a contour plot under it with color determined by `Z`

,
so color is proportional to surface height. If `X`

and `Y`

are
vectors, `length(X) = n`

and ```
length(Y) =
m
```

, where `[m,n] = size(Z)`

. In this case,
(*X*(*j*), *Y*(*i*), *Z*(*i*,*j*))
are the intersections of the wireframe grid lines; `X`

and `Y`

correspond
to the columns and rows of `Z`

, respectively. If `X`

and `Y`

are
matrices, (*X*(*i*,*j*), *Y*(*i*,*j*), *Z*(*i*,*j*))
are the intersections of the wireframe grid lines.

`meshc(Z)`

draws a contour
plot under wireframe mesh using `X = 1:n`

and ```
Y
= 1:m
```

, where `[m,n] = size(Z)`

. The height, `Z`

,
is a single-valued function defined over a rectangular grid. Color
is proportional to surface height.

`meshc(...,C)`

draws a `meshc`

graph
with color determined by matrix `C`

. MATLAB^{®} performs
a linear transformation on the data in `C`

to obtain
colors from the current colormap. If `X`

, `Y`

,
and `Z`

are matrices, they must be the same size
as `C`

.

`meshc(axes_handles,...)`

plots
into the axes with handle `axes_handle`

instead of
the current axes (`gca`

).

`h = meshc(...)`

returns
handles to the Surface Properties and Contour Properties graphics object.

`meshc`

does not accept complex inputs.

A mesh is drawn as a `Surfaceplot`

graphics
object with the viewpoint specified by `view(3)`

.
The face color is the same as the background color (to simulate a
wireframe with hidden-surface elimination), or `none`

when
drawing a standard see-through wireframe. The current colormap determines
the edge color. The `hidden`

command controls the
simulation of hidden-surface elimination in the mesh, and the `shading`

command
controls the shading model.

The range of `X`

, `Y`

, and `Z`

, or the
current settings of the axes `XLimMode`

, `YLimMode`

, and `ZLimMode`

properties, determine
the axis limits. `axis`

sets these properties.

The range of `C`

, or the current settings of the axes `CLim`

and `CLimMode`

properties (also
set by the `caxis`

function), determine the color scaling. Use the
scaled color values are used as indices into the current colormap.

The mesh rendering functions produce color values by mapping
the *z* data values (or an explicit color array)
onto the current colormap. The MATLAB default behavior is to
compute the color limits automatically using the minimum and maximum
data values (also set using `caxis auto`

). The minimum
data value maps to the first color value in the colormap and the maximum
data value maps to the last color value in the colormap. MATLAB performs
a linear transformation on the intermediate values to map them to
the current colormap.

`meshc`

calls `mesh`

, turns `hold`

on,
and then calls `contour`

and positions the contour
on the *x*-*y* plane. For additional
control over the appearance of the contours, issue these commands
directly. You can combine other types of graphs in this manner, for
example `surf`

and `pcolor`

plots.

`meshc`

assumes that `X`

and `Y`

are
monotonically increasing. If `X`

or `Y`

is
irregularly spaced, `contour3`

calculates contours
using a regularly spaced contour grid, and then it transforms the
data to `X`

or `Y`

.

`axis`

|`caxis`

|`colormap`

|`contour`

|`hidden`

|`hold`

|`mesh`

|`meshgrid`

|`meshz`

|`shading`

|`surf`

|`surface`

|`surfc`

|`surfl`

|`view`

|`waterfall`

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