- x
(PLFLT *, input)
Pointer to set of x coordinate values at which the function is
evaluated.
- y
(PLFLT *, input)
Pointer to set of y coordinate values at which the function is
evaluated.
- z
(PLFLT **, input)
Pointer to a vectored two-dimensional array with set of
function values.
- nx
(PLINT, input)
Number of x values at
which function is evaluated.
- ny
(PLINT, input)
Number of y values at
which function is evaluated.
- opt
(PLINT, 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 default
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 .
- clevel
(PLFLT *, input)
Pointer to the array that defines the contour level spacing.
- nlevel
(PLINT, input)
Number of elements in the clevel array.
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