Filled 2-D polygons

`fill(X,Y,C)`

fill(X,Y,ColorSpec)

fill(X1,Y1,C1,X2,Y2,C2,...)

fill(...,'PropertyName',PropertyValue)

fill(ax,...)

h = fill(...)

The `fill`

function creates colored polygons.

`fill(X,Y,C)`

creates filled
polygons from the data in `X`

and `Y`

with
vertex color specified by `C`

. `C`

is
a vector or matrix used as an index into the colormap. If `C`

is
a row vector, `length(C)`

must equal `size(X,2)`

and `size(Y,2)`

;
if `C`

is a column vector, `length(C)`

must
equal `size(X,1)`

and `size(Y,1)`

.
If necessary, `fill`

closes the polygon by connecting
the last vertex to the first. The values in `X`

and `Y`

can
be numeric, datetime, duration, or categorical values.

`fill(X,Y,ColorSpec)`

fills the polygons with the color
specified by `ColorSpec`

, which can be one of the following values:

A color name or a short name:

`'red'`

(or`'r'`

),`'green'`

(or`'g'`

),`'blue'`

(or`'b'`

),`'cyan'`

(or`'c'`

),`'magenta'`

(or`'m'`

),`'yellow'`

(or`'y'`

),`'black'`

(or`'k'`

),`'white'`

(or`'w'`

).An RGB triplet specified as a 1-by-3 vector whose elements are the intensities of the red, green, and blue components of a color. The intensities must be in the range [0, 1]. For example,

`[0.7 0.8 1]`

specifies light blue.

`fill(X1,Y1,C1,X2,Y2,C2,...)`

specifies
multiple two-dimensional filled areas.

`fill(...,'PropertyName',PropertyValue)`

allows you to
specify property names and values for a patch graphics object.

`fill(ax,...)`

creates the polygons in the
axes specified by `ax`

instead of in the current
axes (`gca`

). The option `ax`

can
precede any of the input argument combinations in the previous syntaxes.

`h = fill(...)`

returns a
vector of patch objects.

If `X`

or `Y`

is a matrix,
and the other is a column vector with the same number of elements
as rows in the matrix, `fill`

replicates the column
vector argument to produce a matrix of the required size. `fill`

forms
a vertex from corresponding elements in `X`

and `Y`

and
creates one polygon from the data in each column.

If `X`

or `Y`

contains one
or more `NaN`

values, then `fill`

does
not fill the polygons.

The type of color shading depends on how you specify color in the argument list. If you
specify color using the `ColorSpec`

argument, `fill`

generates flat-shaded polygons by setting the patch object's `FaceColor`

property to the corresponding RGB triplet.

If you specify color using `C`

, `fill`

scales
the elements of `C`

by the values specified by the
axes property `CLim`

. After scaling `C`

, `C`

indexes
the current colormap.

If `C`

is a row vector, `fill`

generates
flat-shaded polygons where each element determines the color of the
polygon defined by the respective column of the `X`

and `Y`

matrices.
Each patch object’s `FaceColor`

property is
set to `'flat'`

. Each row element becomes the `CData`

property
value for the `n`

th patch object, where *n* is
the corresponding column in `X`

or `Y`

.

If `C`

is a column vector or a matrix, `fill`

uses
a linear interpolation of the vertex colors to generate polygons with
interpolated colors. It sets the patch graphics object `FaceColor`

property
to `'interp'`

and the elements in one column become
the `CData`

property value for the respective patch
object. If `C`

is a column vector, `fill`

replicates
the column vector to produce the required sized matrix.