如何在给定区域填充颜色

exdata

如何在给定区域填充颜色

jimin

FILL Filled 2-D polygons.
    FILL(X,Y,C) fills the 2-D polygon defined by vectors X and Y
    with the color specified by C.  The vertices of the polygon
    are specified by pairs of components of X and Y.  If necessary,
    the polygon is closed by connecting the last vertex to the first.

    If C is a single character string chosen from the list 'r','g','b',
    'c','m','y','w','k', or an RGB row vector triple, [r g b], the
    polygon is filled with the constant specified color.

    If C is a vector the same length as X and Y, its elements are
    scaled by CAXIS and used as indices into the current COLORMAP to
    specify colors at the vertices; the color within the polygon is
    obtained by bilinear interpolation in the vertex colors.

    If X and Y are matrices the same size, one polygon per column
    is drawn. In this case, C is a row vector for "flat" polygon
    colors, and C is a matrix for "interpolated" polygon colors.

    If either of X or Y is a matrix, and the other is a column vector
    with the same number of rows, the column vector argument is
    replicated to produce a matrix of the required size.

    FILL(X1,Y1,C1,X2,Y2,C2,...) is another way of specifying
    multiple filled areas.

    FILL sets the PATCH object FaceColor property to 'flat', 'interp',
    or a colorspec depending upon the value of the C matrix.

    H = FILL(...) returns a column vector of handles to PATCH objects,
    one handle per patch. The X,Y,C triples can be followed by
    parameter/value pairs to specify additional properties of the patches.

    See also PATCH, FILL3, COLORMAP, SHADING.

AaronSpark

用fill或者fill3，具体可以看帮助