# plot3dc.3plplot - Man Page

Magnitude colored plot surface with contour

## Synopsis

**plot3dc**(*x*, *y*, *z*, *nx*, *ny*, *opt*, *clevel*, *nlevel*)

## Description

Aside from dropping the *side* functionality this is a more powerful form of **plot3d(3plplot)**: the surface mesh can be colored accordingly to the current z value being plotted, a contour plot can be drawn at the base XY plane, and a curtain can be drawn between the plotted function border and the base XY plane. The arguments are identical to those of **plmeshc(3plplot)**. The only difference between **plmeshc**(3plplot) and **plot3dc**(3plplot) is that **plmeshc**(3plplot) draws the bottom side of the surface, while **plot3dc**(3plplot) only draws the surface as viewed from the top.

Redacted form: General: **plot3dc(x, y, z, opt, clevel)**

This function is used in example 21.

## Arguments

*x*(**PLFLT_VECTOR**(3plplot), input)A vector containing the x coordinates at which the function is evaluated.

*y*(**PLFLT_VECTOR**(3plplot), input)A vector containing the y coordinates at which the function is evaluated.

*z*(**PLFLT_MATRIX**(3plplot), input)A matrix containing function values to plot. Should have dimensions of

*nx*by*ny*.*nx*(**PLINT**(3plplot), input)Number of

*x*values at which function is evaluated.*ny*(**PLINT**(3plplot), input)Number of

*y*values at which function is evaluated.*opt*(**PLINT**(3plplot), input)Determines the way in which the surface is represented. To specify more than one option just add the options, e.g. DRAW_LINEXY + MAG_COLOR

*opt*=DRAW_LINEX : Lines are drawn showing*z*as a function of*x*for each value of*y*[j] .*opt*=DRAW_LINEY : Lines are drawn showing*z*as a function of*y*for each value of*x*[i] .*opt*=DRAW_LINEXY : Network of lines is drawn connecting points at which function is defined.*opt*=MAG_COLOR : Each line in the mesh is colored according to the z value being plotted. The color is used from the current cmap1.*opt*=BASE_CONT : A contour plot is drawn at the base XY plane using parameters*nlevel*and*clevel*.*opt*=DRAW_SIDES : draws a curtain between the base XY plane and the borders of the plotted function.*clevel*(**PLFLT_VECTOR**(3plplot), input)A vector containing the contour levels.

*nlevel*(**PLINT**(3plplot), input)Number of elements in the clevel vector.

## Authors

Many developers (who are credited at http://plplot.org/credits.php) have contributed to PLplot over its long history.

## See Also

PLplot documentation at http://plplot.org/documentation.php.