PLOT3DC(3plplot) | PLplot API | PLOT3DC(3plplot) |

# NAME¶

**plot3dc** - 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.

November, 2021 |