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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.January, 2019 |