# Contour Function

Draws contour of a functionon the 3-dimensional space

`contourfcn(FCN, X, Y)`

draws the contour of the function given by the
handle `FCN`

in the x-y plane defined over the intervals specified by X
and Y.

`contourfcn(FCN, X, Y, X_LABEL)`

draws the contour and uses `X_LABEL`

as the
label of x-axis.

`contourfcn(FCN, X, Y, X_LABEL, Y_LABEL)`

draws the contour and uses
`X_LABEL`

as the label of x-axis and `Y_LABEL`

as the label of the y-axis.

`contourfcn(FCN, X, Y, X_LABEL, Y_LABEL, Z_LABEL)`

draws the contour and
uses `X_LABEL`

as the label of x-axis, `Y_LABEL`

as the label of the y-axis
and `Z_LABEL`

as the label of the z-axis.

`contourfcn(FCN, X, Y, X_LABEL, Y_LABEL, Z_LABEL, PLT_TITLE)`

draws the contour and uses `PLT_TITLE`

as the title of the plot.

`contourfcn(FCN, X, Y, X_LABEL, Y_LABEL, Z_LABEL, PLT_TITLE, USE_COLORBAR)`

if `USE_COLORBAR`

is true, a color bar will also be drawn.

`[C, H] = contourfcn(...)`

returns contour matrix `C`

and a handle, `H`

, to
a contour object. These can be used as inputs to `CLABEL`

. The structure of
a contour matrix is described in MATLABâ€™s help for `CONTOURC`

.