NAME

       plsurf3d - Plot shaded 3-d surface plot

SYNOPSIS

       plsurf3d(x, y, z, nx, ny, opt, clevel, nlevel)

DESCRIPTION

       Plots  a  three-dimensional  shaded  surface  plot  within the environment set up by plw3d(3plplot).  The
       surface is defined by the two-dimensional matrix z[nx][ny], the point z[i][j]  being  the  value  of  the
       function  at  (x[i],y[j]).  Note that the points in vectors x and y do not need to be equally spaced, but
       must be stored in ascending order. For further details see the PLplot documentation.

       Redacted form: plsurf3d(x, y, z, opt, clevel)

       This function is not used in any examples.

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. FACETED + SURF_CONT opt=FACETED : Network of lines is drawn connecting points at
              which function is defined.  opt=BASE_CONT : A contour plot is drawn at the  base  XY  plane  using
              parameters  nlevel and clevel.  opt=SURF_CONT : A contour plot is drawn at the surface plane using
              parameters nlevel and clevel.  opt=DRAW_SIDES : draws a curtain between the base XY plane and  the
              borders of the plotted function.  opt=MAG_COLOR : the surface is colored according to the value of
              Z; if MAG_COLOR is not used, then the surface  is  colored  according  to  the  intensity  of  the
              reflected   light   in   the   surface   from   a   light  source  whose  position  is  set  using
              pllightsource(3plplot).

       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.

                                                  October, 2024                                PLSURF3D(3plplot)